The Cat® FM558 forest machine can shovel and process logs, load trucks, build roads, and much more with a choice of configurations and attachments.

Forest Machines FM558 GF/FM558 LL Tier 4 / Stage V

Name: FM558 GF/FM558 LL
Brand: Caterpillar

New Used

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Key Specs

Engine Model: Cat C7.1; Cat C7.1

Net Power - ISO 9249: 298 hp; 222.5 kW

Engine Power - ISO 14396: 302 hp; 225.1 kW

FM558 GF/FM558 LL
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Overview

Stable, Comfortable Shovel Logging Machine

The Cat® FM558 excels in shovel logging with stability, comfort, and strong hydraulics. Cat forestry tools, VisionLink™ monitoring, and dealer support keep operations profitable.

Benefits

Maximum Power for Multiple Configurations

High swing torque and lift capacity power through logging, loading, and processing.

Engineered for Operator Safety

Certified Forestry ROPS cab with reinforced guards and clear sightlines keeps you safe in demanding woods work.

Low Owning and Operating Costs

Extended service intervals and Cat dealer support maximize uptime while lowering costs.

Features At A Glance

Displaying 1-6 of 10

Latest Features

Machine Setup Simplification

At the touch of fingertips and navigating user-friendly icons, the latest operator oriented User Interface (UI) maximizes uptime and gets crews to work without delay. From re-ordering work tool lists to creating new work tool combinations as needed, operators can quickly set up machines and easily access information.

Foot Pedal Swing Control Kit

The FM558 offers powerful, reliable performance optimized for challenging forestry tasks, and now, operators can enhance productivity and ease of operation with the optional Foot Pedal Swing Control Kit. This attachment integrates seamlessly with Caterpillar's customizable joystick pattern software, enabling operators to personalize controls based on their preferences or job requirements. With the kit's two auxiliary pedals, operators can control the upper rotation of the machine using their feet, providing knuckleboom loader style of operation. The Foot Pedal Swing Control Kit is ideal for those looking to maximize control and efficiency in demanding forestry environments.

Not all features are available in all regions. Please check with your local Cat® dealer for specific offering availability in your area. Build Number: 07H

Take the Guesswork Out of Managing Your Equipment

The latest operator oriented User Interface (UI) has been designed to maximize uptime by allowing operators to easily reorder work tool lists and quickly create new work tool combinations. It also eliminates the need to measure up again when changing Cat® work tool attachments and makes it manageable for a single person to check and adjust for bucket wear.
VisionLink™ provides actionable data insights for all assets – regardless of fleet size or equipment manufacturer.* Review equipment data from your desktop or mobile device to maximize uptime and optimize assets. Equipment management features provide up-to-date asset tracking of your entire fleet. You can track asset location, operating hours, fuel level, health issues, and overall utilization. Monitor equipment health with fault codes, fluid analysis, and inspection due dates. It's all about making informed, data-based decisions to help reduce operating costs.
Cat® Inspect is a mobile application that allows you to easily perform digital preventative maintenance (PM) checks, inspections, and daily walkarounds. Inspections can easily be integrated with other Cat data systems like VisionLink so you can keep a close eye on your fleet.
Remote Troubleshoot is a mobile application that allows your Cat dealer to perform diagnostic testing on your connected machine remotely to help resolve issues quickly and with less downtime.
Remote Flash is a mobile application that allows you to update onboard software without a technician being present, allowing you to initiate software updates when convenient, increasing your overall operating efficiency.
The Cat PL161 attachment locator allows you to track attachments across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The work tool recognition** feature automatically adjusts machine settings based on the selected tool.

* Data field availability can vary by equipment manufacturer.
** Recognition feature available on select excavator models. Consult your Cat dealer for details.

High Performance

The Cat® C7.1 engine offers up to 25% more power* and can run on biodiesel and renewable fuels.
Smart mode helps reduce fuel consumption by automatically matching engine and hydraulic power to working conditions.
Pick and place logs with precision and power with the all-new electrohydraulic control system.
Heavy lift mode with up to 30% more swing torque* helps you confidently move big logs.
Cover ground faster than ever with up to 15% more travel power*.
Auxiliary hydraulic options let you use Cat grapples and various other attachments.
Work in extreme environments with standard high-ambient capability of 52° C (126° F) and cold start capability of -32° C (-25° F).

*All percentages are compared to the 2021 model year 558.

Work in Comfort

Operators can choose the rear or side cab entry with up to 25% more space and a tilt-up console.*
The dual HVAC system keeps operators comfortable in cold and warm weather.
A wider heated and cooled air-suspension seat makes year-round work more pleasant.
All controls are within easy reach to reduce twisting and turning and keep you focused on the work area.
Cab Risers – 559 mm (22") tilting (for transport), side-entry cab with bolted retention system; 1219 mm (48") tilting (for transport), rearentry cab with easy lock, and 1829 mm (72") tilting (for transport), rear-entry cab with easy lock - are available to meet your work needs.
Stow your gear with in-cab storage beneath, behind the seat, and in the consoles.
Use the standard radio’s USB ports and Bluetooth® technology to connect personal devices and make hands-free calls.

*All percentages are compared to the 2021 model year 558.

Simple to Operate

Cat® continues to improve user interface functionality for operators of all skill levels. The touchscreen monitor is an easy-to-use operating tool that presents the jobsite dashboard with an intuitive format.
The Cat PL161 attachment locator is a Bluetooth® device designed to let users know where their attachments are across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The PL161 integrates easily into VisionLink™ for full fleet management of machines and attachments from one smartphone or tablet dashboard to view location and tracking details.
Productivity applications are displayed in grid view to read on the go, and touchscreen navigation is programmed to ensure job performance continues without any hold-ups.
Navigate quickly on the standard high-resolution 254 mm (10 in) touchscreen monitor.
Make moving the excavator much easier with optional Cat® Stick Steer. Push a button and use one hand to travel and turn instead of both hands or feet on levers or pedals.
Not sure how a function works or how to maintain the machine? Always have the operator’s manual at your fingertips in the touchscreen monitor.
Optional auxiliary relay powers on and turns off CB radios and other attachments without you taking your hands off the joysticks.

Versatile Configurations

General Forestry

The General Forestry model is ideal for road work, grappling, processing, and delimbing.
With a reach boom and quick coupler, you can equip the FM558 with a processor, bucket, thumb, mulcher, and other attachments to get work done quickly and efficiently.
A frontless option allows you to customize the machine to fit your applications.

Log Loader

The log loader configuration is ideal for truck loading, Butt-n-Top loading, power clam applications and millyard work.
An under-mounted heel cylinder provides maximum force for shovel logging with a Cat grapple. A variable displacement pump delivers high-flow rotating capability for heel and log grapples and Power Clam and Butt-n-Top grapples.
An overmounted heel cylinder provides maximum clearance to load trucks and increases lift height for millyard applications.

Rugged, reliable, simple-to-service Cat forestry grapples range in size from 1322 mm (52") to 1524 mm (60").

Easy Maintenance

Boost productivity with proactive service reminders. The Integrated Vehicle Health Management system alerts the operator with step-by-step service guidance and the parts needed so you don't experience unnecessary downtime.
Expect lower maintenance cost than the previous model.
The engine’s regeneration system functions automatically with no operator input or interruption to work.
Using Cat® genuine oil and filters and doing typical S∙O∙S^SM monitoring will double the current service interval to 1,000 hours, giving you greater uptime to do more work.
S·O·S ports simplify maintenance and allow for quick, easy extraction of fluid samples for analysis.
The diesel particulate filter requires no maintenance.
Replace fuel filters at 1,000 hours – twice the interval from the previous filters.
The latest hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3000-hour replacement interval – 50% longer than previous filter designs.
The high-efficiency cooling fan runs only when needed; program intervals so the fan automatically reverses to keep cores clean without interrupting your work.

Safely Home Every Day

The cab meets applicable industry standards for ROPS/FOPS/OPG and protects the operator inside the cab.
Access most routine maintenance points at ground level.
The right-hand service platform design provides easy, safe, and quick access to the upper service platform; the service platform steps use an anti-skid punch plate to prevent slipping.
Handrails are provided for easy access.
Larger 32 mm (1 1/4”) polycarbonate front window, smaller cab pillars, and a flat engine hood improve visibility by up to 50%.
Standard rearview camera enhances jobsite visibility; right-hand-sideview camera is optional.
The monitor’s slope and grade indicator tell you the machine's position to help optimize its performance.
A signaling/warning horn and travel alarm enhance jobsite safety.
Make service work easier and safer with optional inspection lighting. With the flip of a switch, lights will illuminate the engine, pump, battery, and radiator compartments to enhance visibility.

*All percentages are compared to the 2021 model year 558.

Attachments

Tackle your jobs with a complete Cat® solution. Cat attachments are not just accessories – they are essential tools that define what your machine can do. When you pair a Cat excavator with Cat attachments, you unlock a fully integrated system built for performance, durability, and efficiency. Whether you are clearing land, breaking concrete, or compacting soil, the right attachment transforms your excavator into a powerful, multi-purpose tool ready for any challenge. Depending on your project or application, you could benefit from excavator attachments such as:

Buckets: Handle everything from digging and grading to cleanup and debris removal with your excavator. Caterpillar® offers general duty, heavy duty, extreme duty, and severe duty buckets, as well as specialized designs for ditch cleaning, rock, and finishing work. Reinforced edges and wear-resistant materials ensure long-lasting performance in tough conditions.
Pin Grabber: Offer fast, secure attachment changes and are compatible with a wide range of tools. Ideal for operators who need flexibility on the job site, they allow switching between buckets, hammers, and grapples. Features a redundant locking system to keep your attachments in place and protect them from damage.
CW Quick Couplers: Rugged, wedge-style quick couplers built to increase the utilization of your excavator. Designed to fit your machine and application needs, Caterpillar® offers a series of CW couplers in mechanical and hydraulic versions. Ideal for contractors who prioritize a strong, simple locking system for frequent attachment changes.
S-Type Couplers: A pin grabber-style dedicated coupler, S-Type Couplers feature a narrow, lightweight design for improved performance. They offer precision, flexibility, and are ideal for fleets needing consistent attachment interchangeability.
Hydraulic Connecting S-Type (HCS) Couplers: HCS Couplers offer automatic hydraulic connection with the compact, low-profile design of the S-Type. With advanced functionality such as full hydraulic and electronic connection, hydromechanical attachments are connected and ready to operate in seconds.
Performance Hammers: Built for high-demand applications, performance hammers deliver maximum impact energy and fast cycle times for breaking concrete, rock, and asphalt. Ideal for heavy-duty demolition, quarrying, and production environments where speed and power are critical.
GC Hammers: Cat® GC hammers offer reliable performance for everyday breaking tasks at a lower operating cost. A versatile solution for many applications, including road construction, trenching and demolition, while balancing power and efficiency for general contractors.
GC S Hammers: Simplified, silenced models designed for noise-sensitive environments. They maintain solid performance while reducing sound levels, making them ideal for urban job sites, residential areas, and regulated zones. Ideal for site prep, light demolition, foundry and quarry applications.
Mulchers: Ideal for forestry and agriculture applications. Mulchers clear land and manage vegetation by shredding brush, trees, and undergrowth into fine mulch. Their high-speed rotors deliver fast, consistent results, with interchangeable teeth to suit different materials and desired final mulch size.

Cat® attachments are engineered to maximize your excavator’s productivity, helping you get more work done with greater efficiency and confidence. Choosing the right attachment is not just about compatibility, it is about unlocking your machine’s full potential while avoiding equipment damage or safety risks. Connect with your Cat Dealer to find the optimal attachments for your specific machine and application needs.

Not all attachments are available in all regions. Contact your Cat Dealer for details.

Sustainability

The Cat® C7.1 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
Auto Engine Speed Control reduces unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
Extended maintenance intervals reduce downtime and decrease the amount of fluid and filters that are replaced over the machine's life.
Cat® VisionLink displays the CO2 emissions for monitored assets, calculated by fuel type for the Runtime Fuel Burned each day in a selected date range.
Remote Flash minimizes downtime and maintenance time while keeping your asset running at maximum efficiency. Alerts for machine updates are sent virtually from your Cat® dealer, and updates can be deployed without a dealer technician needing to be onsite.

*While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use.
**Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.
***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

Machine Setup Simplification

At the touch of fingertips and navigating user-friendly icons, the latest operator oriented User Interface (UI) maximizes uptime and gets crews to work without delay. From re-ordering work tool lists to creating new work tool combinations as needed, operators can quickly set up machines and easily access information.

Foot Pedal Swing Control Kit

The FM558 offers powerful, reliable performance optimized for challenging forestry tasks, and now, operators can enhance productivity and ease of operation with the optional Foot Pedal Swing Control Kit. This attachment integrates seamlessly with Caterpillar's customizable joystick pattern software, enabling operators to personalize controls based on their preferences or job requirements. With the kit's two auxiliary pedals, operators can control the upper rotation of the machine using their feet, providing knuckleboom loader style of operation. The Foot Pedal Swing Control Kit is ideal for those looking to maximize control and efficiency in demanding forestry environments.

Not all features are available in all regions. Please check with your local Cat® dealer for specific offering availability in your area. Build Number: 07H

The latest operator oriented User Interface (UI) has been designed to maximize uptime by allowing operators to easily reorder work tool lists and quickly create new work tool combinations. It also eliminates the need to measure up again when changing Cat® work tool attachments and makes it manageable for a single person to check and adjust for bucket wear.
VisionLink™ provides actionable data insights for all assets – regardless of fleet size or equipment manufacturer.* Review equipment data from your desktop or mobile device to maximize uptime and optimize assets. Equipment management features provide up-to-date asset tracking of your entire fleet. You can track asset location, operating hours, fuel level, health issues, and overall utilization. Monitor equipment health with fault codes, fluid analysis, and inspection due dates. It's all about making informed, data-based decisions to help reduce operating costs.
Cat® Inspect is a mobile application that allows you to easily perform digital preventative maintenance (PM) checks, inspections, and daily walkarounds. Inspections can easily be integrated with other Cat data systems like VisionLink so you can keep a close eye on your fleet.
Remote Troubleshoot is a mobile application that allows your Cat dealer to perform diagnostic testing on your connected machine remotely to help resolve issues quickly and with less downtime.
Remote Flash is a mobile application that allows you to update onboard software without a technician being present, allowing you to initiate software updates when convenient, increasing your overall operating efficiency.
The Cat PL161 attachment locator allows you to track attachments across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The work tool recognition** feature automatically adjusts machine settings based on the selected tool.

* Data field availability can vary by equipment manufacturer.
** Recognition feature available on select excavator models. Consult your Cat dealer for details.

The Cat® C7.1 engine offers up to 25% more power* and can run on biodiesel and renewable fuels.
Smart mode helps reduce fuel consumption by automatically matching engine and hydraulic power to working conditions.
Pick and place logs with precision and power with the all-new electrohydraulic control system.
Heavy lift mode with up to 30% more swing torque* helps you confidently move big logs.
Cover ground faster than ever with up to 15% more travel power*.
Auxiliary hydraulic options let you use Cat grapples and various other attachments.
Work in extreme environments with standard high-ambient capability of 52° C (126° F) and cold start capability of -32° C (-25° F).

*All percentages are compared to the 2021 model year 558.

Operators can choose the rear or side cab entry with up to 25% more space and a tilt-up console.*
The dual HVAC system keeps operators comfortable in cold and warm weather.
A wider heated and cooled air-suspension seat makes year-round work more pleasant.
All controls are within easy reach to reduce twisting and turning and keep you focused on the work area.
Cab Risers – 559 mm (22") tilting (for transport), side-entry cab with bolted retention system; 1219 mm (48") tilting (for transport), rearentry cab with easy lock, and 1829 mm (72") tilting (for transport), rear-entry cab with easy lock - are available to meet your work needs.
Stow your gear with in-cab storage beneath, behind the seat, and in the consoles.
Use the standard radio’s USB ports and Bluetooth® technology to connect personal devices and make hands-free calls.

*All percentages are compared to the 2021 model year 558.

Cat® continues to improve user interface functionality for operators of all skill levels. The touchscreen monitor is an easy-to-use operating tool that presents the jobsite dashboard with an intuitive format.
The Cat PL161 attachment locator is a Bluetooth® device designed to let users know where their attachments are across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The PL161 integrates easily into VisionLink™ for full fleet management of machines and attachments from one smartphone or tablet dashboard to view location and tracking details.
Productivity applications are displayed in grid view to read on the go, and touchscreen navigation is programmed to ensure job performance continues without any hold-ups.
Navigate quickly on the standard high-resolution 254 mm (10 in) touchscreen monitor.
Make moving the excavator much easier with optional Cat® Stick Steer. Push a button and use one hand to travel and turn instead of both hands or feet on levers or pedals.
Not sure how a function works or how to maintain the machine? Always have the operator’s manual at your fingertips in the touchscreen monitor.
Optional auxiliary relay powers on and turns off CB radios and other attachments without you taking your hands off the joysticks.

General Forestry

The General Forestry model is ideal for road work, grappling, processing, and delimbing.
With a reach boom and quick coupler, you can equip the FM558 with a processor, bucket, thumb, mulcher, and other attachments to get work done quickly and efficiently.
A frontless option allows you to customize the machine to fit your applications.

Log Loader

The log loader configuration is ideal for truck loading, Butt-n-Top loading, power clam applications and millyard work.
An under-mounted heel cylinder provides maximum force for shovel logging with a Cat grapple. A variable displacement pump delivers high-flow rotating capability for heel and log grapples and Power Clam and Butt-n-Top grapples.
An overmounted heel cylinder provides maximum clearance to load trucks and increases lift height for millyard applications.

Rugged, reliable, simple-to-service Cat forestry grapples range in size from 1322 mm (52") to 1524 mm (60").

Boost productivity with proactive service reminders. The Integrated Vehicle Health Management system alerts the operator with step-by-step service guidance and the parts needed so you don't experience unnecessary downtime.
Expect lower maintenance cost than the previous model.
The engine’s regeneration system functions automatically with no operator input or interruption to work.
Using Cat® genuine oil and filters and doing typical S∙O∙S^SM monitoring will double the current service interval to 1,000 hours, giving you greater uptime to do more work.
S·O·S ports simplify maintenance and allow for quick, easy extraction of fluid samples for analysis.
The diesel particulate filter requires no maintenance.
Replace fuel filters at 1,000 hours – twice the interval from the previous filters.
The latest hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3000-hour replacement interval – 50% longer than previous filter designs.
The high-efficiency cooling fan runs only when needed; program intervals so the fan automatically reverses to keep cores clean without interrupting your work.

The cab meets applicable industry standards for ROPS/FOPS/OPG and protects the operator inside the cab.
Access most routine maintenance points at ground level.
The right-hand service platform design provides easy, safe, and quick access to the upper service platform; the service platform steps use an anti-skid punch plate to prevent slipping.
Handrails are provided for easy access.
Larger 32 mm (1 1/4”) polycarbonate front window, smaller cab pillars, and a flat engine hood improve visibility by up to 50%.
Standard rearview camera enhances jobsite visibility; right-hand-sideview camera is optional.
The monitor’s slope and grade indicator tell you the machine's position to help optimize its performance.
A signaling/warning horn and travel alarm enhance jobsite safety.
Make service work easier and safer with optional inspection lighting. With the flip of a switch, lights will illuminate the engine, pump, battery, and radiator compartments to enhance visibility.

*All percentages are compared to the 2021 model year 558.

Buckets: Handle everything from digging and grading to cleanup and debris removal with your excavator. Caterpillar® offers general duty, heavy duty, extreme duty, and severe duty buckets, as well as specialized designs for ditch cleaning, rock, and finishing work. Reinforced edges and wear-resistant materials ensure long-lasting performance in tough conditions.
Pin Grabber: Offer fast, secure attachment changes and are compatible with a wide range of tools. Ideal for operators who need flexibility on the job site, they allow switching between buckets, hammers, and grapples. Features a redundant locking system to keep your attachments in place and protect them from damage.
CW Quick Couplers: Rugged, wedge-style quick couplers built to increase the utilization of your excavator. Designed to fit your machine and application needs, Caterpillar® offers a series of CW couplers in mechanical and hydraulic versions. Ideal for contractors who prioritize a strong, simple locking system for frequent attachment changes.
S-Type Couplers: A pin grabber-style dedicated coupler, S-Type Couplers feature a narrow, lightweight design for improved performance. They offer precision, flexibility, and are ideal for fleets needing consistent attachment interchangeability.
Hydraulic Connecting S-Type (HCS) Couplers: HCS Couplers offer automatic hydraulic connection with the compact, low-profile design of the S-Type. With advanced functionality such as full hydraulic and electronic connection, hydromechanical attachments are connected and ready to operate in seconds.
Performance Hammers: Built for high-demand applications, performance hammers deliver maximum impact energy and fast cycle times for breaking concrete, rock, and asphalt. Ideal for heavy-duty demolition, quarrying, and production environments where speed and power are critical.
GC Hammers: Cat® GC hammers offer reliable performance for everyday breaking tasks at a lower operating cost. A versatile solution for many applications, including road construction, trenching and demolition, while balancing power and efficiency for general contractors.
GC S Hammers: Simplified, silenced models designed for noise-sensitive environments. They maintain solid performance while reducing sound levels, making them ideal for urban job sites, residential areas, and regulated zones. Ideal for site prep, light demolition, foundry and quarry applications.
Mulchers: Ideal for forestry and agriculture applications. Mulchers clear land and manage vegetation by shredding brush, trees, and undergrowth into fine mulch. Their high-speed rotors deliver fast, consistent results, with interchangeable teeth to suit different materials and desired final mulch size.

The Cat® C7.1 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
Auto Engine Speed Control reduces unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
Extended maintenance intervals reduce downtime and decrease the amount of fluid and filters that are replaced over the machine's life.
Cat® VisionLink displays the CO2 emissions for monitored assets, calculated by fuel type for the Runtime Fuel Burned each day in a selected date range.
Remote Flash minimizes downtime and maintenance time while keeping your asset running at maximum efficiency. Alerts for machine updates are sent virtually from your Cat® dealer, and updates can be deployed without a dealer technician needing to be onsite.

Specifications Standard Equipment Optional Equipment

Product Specifications for FM558 GF/FM558 LL

Engine

Engine Model	Cat C7.1 Cat C7.1
Net Power - ISO 9249	298 hp 222.5 kW
Engine Power - ISO 14396	302 hp 225.1 kW
Net Power - ISO 9249 (DIN)	303 hp (metric) 303 hp (metric)
Engine Power - ISO 14396 (DIN)	306 hp (metric) 306 hp (metric)
Bore	4.13 in 105 mm
Stroke	5.31 in 135 mm
Displacement	433.3 in³ 7.1 l
Biodiesel Capability	B20¹ B20¹
Emissions	Meets U.S. EPA Tier 4 Final, EU Stage V emission standards. Meets U.S. EPA Tier 4 Final, EU Stage V emission standards.
Note (1)	Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture. Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture.
Note (2)	¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester)* 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. * Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester)* 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. * Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

Drive

Maximum Drawbar Pull	78,638 lbf 350 kN
Maximum Travel Speed	2.8 mile/h 4.4 km/h

Hydraulic System

Main System - Maximum Flow	141 gpm 534 L/min
Maximum Pressure - Equipment	5076 psi 35000 kPa
Maximum Pressure - Equipment - Lift Mode	5511 psi 38000 kPa
Maximum Pressure - Travel	5076 psi 35000 kPa
Maximum Pressure - Swing	3945 psi 27200 kPa

Swing Mechanism

Swing Speed	7.4 r/min 7.4 r/min
Maximum Swing Torque	113584 lbf·ft 154 kN·m

Weights

General Forestry	91490 lb 41500 kg
Note (1)	22" SEC Riser, High Wide undercarriage, 5.04mt CTWT, Reach Boom, R3.2 m (10'2") Reach stick, 700mm (28") double grouser shoes, 1.76 m³ (2.30 yd³) HD bucket. 22" SEC Riser, High Wide undercarriage, 5.04mt CTWT, Reach Boom, R3.2 m (10'2") Reach stick, 700mm (28") double grouser shoes, 1.76 m³ (2.30 yd³) HD bucket.
Log Loader (U/U)	98550 lb 44700 kg
Note (2)	72" REC Riser, High Wide undercarriage, Log Loader boom, 4.05 m (13'3") Under/Under stick with live heel, 700mm (28") double grouser shoes, no grapple. 72" REC Riser, High Wide undercarriage, Log Loader boom, 4.05 m (13'3") Under/Under stick with live heel, 700mm (28") double grouser shoes, no grapple.

Service Refill Capacities

Fuel Tank	262 gal (US) 990 l
Cooling System	10 gal (US) 38 l
Engine Oil	7 gal (US) 25 l
Swing Drive	4 gal (US) 13.5 l
Final Drive - Each	3 gal (US) 9.5 l
Hydraulic System - Including Tank	92 gal (US) 348 l
Hydraulic Tank	49 gal (US) 185 l
DEF Tank	11 gal (US) 41 l

Working Ranges

Max Reach at Grapple Mount on Heel at Ground Level - Log Loader Under/Under	39.3 ft 11980 mm
Max Reach at Stick Nose at Ground Level - General Forestry Road Builder	35.3 ft 10740 mm

Dimensions

Note (1)	General Forestry General Forestry
Length: General Forestry - Boom Stretched Out	46.2 ft 14060 mm
Length: Log Loader - Boom Stretched Out	51.6 ft 15730 mm
Track Gauge	9.6 ft 2920 mm
Shipping Height - Tilted Cab	11.9 ft 3610 mm
Track Length	16.9 ft 5160 mm
Track Length to Center of Rollers	13.5 ft 4120 mm
Tail Swing Radius	11.6 ft 3650 mm
Transport Width	12 ft 3650 mm
Counterweight Clearance	4.9 ft 1510 mm
Handrail Height	11.6 ft 3520 mm
Ground Clearance	2.5 ft 770 mm

Air Conditioning System

Note (1)

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.1 (22" Riser CAB)/2.2 (48"/72" Riser CAB) kg of refrigerant, which has a CO2 equivalent of 3.003/3.146 metric tonnes. The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.1 (22" Riser CAB)/2.2 (48"/72" Riser CAB) kg of refrigerant, which has a CO2 equivalent of 3.003/3.146 metric tonnes.

FM558 GF/FM558 LL Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

CAB

ROPS Forestry cab with polycarbonate windows

4-point harness seat belt

Heated and cooled seat with air-adjustable suspension

Integrated joysticks

Tilt-up left-side console (side-entry cab only)

High-resolution touchscreen monitor

Bluetooth® integrated radio (including USB, aux port and microphone)

12V DC outlets

Keyless push-to-start engine control

Automatic bi-level air conditioner

LED dome and floor lights

Windshield wiper and washer

Behind seat storage

Retractable sunshade

CAT TECHNOLOGIES

VisionLink™

Remote Flash

Remote Troubleshoot

Cat Payload

ELECTRICAL SYSTEM

Maintenance-free 1000 CCA batteries (x4)

Centralized electrical disconnect switch

LED chassis and left-side boom light (1,800 lumen)

Horn and travel alarm

ENGINE

Electric fuel priming pump

Three selectable modes: Power, Smart, Eco

Automatic engine speed control

Automatic engine idle shutdown

Up to 4600m (15,092 ft) altitude capability

52° C (126° F) high-ambient cooling capacity

-32° C (-25° F) cold start capability

Hydraulic reverse fan

Two-stage fuel filter system

Double element air filter with integrated pre-cleaner

HYDRAULIC SYSTEM

Boom and stick regeneration circuits

Boom and stick drift reduction valve

Electronic main control valve

Automatic hydraulic oil warmup

Automatic swing parking brake

High performance hydraulic return filter

Automatic two speed travel

Bio hydraulic oil capability

High torque swing drive

Swing cushion valve

Tool control software

SAFETY AND SECURITY

Caterpillar One Key security system

Lockable service doors

Lockable external tool/storage box

Lockable fuel caps and hydraulic tank

Lockable disconnect switch

Service platforms with anti-skid plate and countersunk bolts

RH handrail and handhold

Signaling/warning horn

Ground-level secondary engine shutoff switch

Rearview camera

Operator Protective Guards

SERVICE AND MAINTENANCE

Side-entry service platform

Integrated vehicle health management system

Grouped location for engine oil and fuel filters

Scheduled Oil Sampling (S·O·S℠) ports

UNDERCARRIAGE AND STRUCTURES

High Wide undercarriage

216 mm (8.5") pitch Cat grease lubricated track chain with PPR3 positive pin retention

Catwalks

Tie down points

Counterweight fuel tank

Heavy-duty track rollers and frames

Heavy-duty travel motor guards

Heavy-duty bottom guards

Track guiding guards

High drawbar final drives

Heavy-duty recoil springs

Heavy-duty hydraulic swivel

Heavy-duty hydraulic swivel guard

FM558 GF/FM558 LL Optional Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

BOOMS AND STICKS

6.15 m (20'2") Reach boom

6.8 m (22'4") Log Loader boom

3.2 m (10'6") Reach stick

4.05 m (13'3") Over/Under stick

4.05 m (13'3") Under/Under stick

4.35 m (14'3") Power Clam stick

CAB

Side entry with 559 mm (22") tilting riser

Rear entry with 1219 mm (48") tilting riser

Rear entry with 1829 mm (72") tilting riser

Cat Stick Steer

Auxiliary relay

ELECTRICAL SYSTEM

Premium lighting - General Forestry

Premium lighting - Log Loader

ENGINE

Cold start package with block heater

HYDRAULIC SYSTEM

Medium pressure circuit

SAFETY AND SECURITY

Inspection lighting

Right-hand sideview camera

UNDERCARRIAGE AND STRUCTURES

5.0 mt (11,023 lb) counterweight fuel tank (optional for General Forestry only)

700 mm (28") double and single grouser shoes

Product Specifications for FM558 GF/FM558 LL

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Engine

Engine Model	Cat C7.1 Cat C7.1
Net Power - ISO 9249	298 hp 222.5 kW
Engine Power - ISO 14396	302 hp 225.1 kW
Net Power - ISO 9249 (DIN)	303 hp (metric) 303 hp (metric)
Engine Power - ISO 14396 (DIN)	306 hp (metric) 306 hp (metric)
Bore	4.13 in 105 mm
Stroke	5.31 in 135 mm
Displacement	433.3 in³ 7.1 l
Biodiesel Capability	B20¹ B20¹
Emissions	Meets U.S. EPA Tier 4 Final, EU Stage V emission standards. Meets U.S. EPA Tier 4 Final, EU Stage V emission standards.
Note (1)	Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture. Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture.
Note (2)	¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester)* 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. * Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester)* 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. * Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

Drive

Maximum Drawbar Pull	78,638 lbf 350 kN
Maximum Travel Speed	2.8 mile/h 4.4 km/h

Hydraulic System

Main System - Maximum Flow	141 gpm 534 L/min
Maximum Pressure - Equipment	5076 psi 35000 kPa
Maximum Pressure - Equipment - Lift Mode	5511 psi 38000 kPa
Maximum Pressure - Travel	5076 psi 35000 kPa
Maximum Pressure - Swing	3945 psi 27200 kPa

Swing Mechanism

Swing Speed	7.4 r/min 7.4 r/min
Maximum Swing Torque	113584 lbf·ft 154 kN·m

Weights

General Forestry	91490 lb 41500 kg
Note (1)	22" SEC Riser, High Wide undercarriage, 5.04mt CTWT, Reach Boom, R3.2 m (10'2") Reach stick, 700mm (28") double grouser shoes, 1.76 m³ (2.30 yd³) HD bucket. 22" SEC Riser, High Wide undercarriage, 5.04mt CTWT, Reach Boom, R3.2 m (10'2") Reach stick, 700mm (28") double grouser shoes, 1.76 m³ (2.30 yd³) HD bucket.
Log Loader (U/U)	98550 lb 44700 kg
Note (2)	72" REC Riser, High Wide undercarriage, Log Loader boom, 4.05 m (13'3") Under/Under stick with live heel, 700mm (28") double grouser shoes, no grapple. 72" REC Riser, High Wide undercarriage, Log Loader boom, 4.05 m (13'3") Under/Under stick with live heel, 700mm (28") double grouser shoes, no grapple.

Service Refill Capacities

Fuel Tank	262 gal (US) 990 l
Cooling System	10 gal (US) 38 l
Engine Oil	7 gal (US) 25 l
Swing Drive	4 gal (US) 13.5 l
Final Drive - Each	3 gal (US) 9.5 l
Hydraulic System - Including Tank	92 gal (US) 348 l
Hydraulic Tank	49 gal (US) 185 l
DEF Tank	11 gal (US) 41 l

Working Ranges

Max Reach at Grapple Mount on Heel at Ground Level - Log Loader Under/Under	39.3 ft 11980 mm
Max Reach at Stick Nose at Ground Level - General Forestry Road Builder	35.3 ft 10740 mm

Dimensions

Note (1)	General Forestry General Forestry
Length: General Forestry - Boom Stretched Out	46.2 ft 14060 mm
Length: Log Loader - Boom Stretched Out	51.6 ft 15730 mm
Track Gauge	9.6 ft 2920 mm
Shipping Height - Tilted Cab	11.9 ft 3610 mm
Track Length	16.9 ft 5160 mm
Track Length to Center of Rollers	13.5 ft 4120 mm
Tail Swing Radius	11.6 ft 3650 mm
Transport Width	12 ft 3650 mm
Counterweight Clearance	4.9 ft 1510 mm
Handrail Height	11.6 ft 3520 mm
Ground Clearance	2.5 ft 770 mm

Air Conditioning System

Note (1)

FM558 GF/FM558 LL Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

CAB

ROPS Forestry cab with polycarbonate windows

4-point harness seat belt

Heated and cooled seat with air-adjustable suspension

Integrated joysticks

Tilt-up left-side console (side-entry cab only)

High-resolution touchscreen monitor

Bluetooth® integrated radio (including USB, aux port and microphone)

12V DC outlets

Keyless push-to-start engine control

Automatic bi-level air conditioner

LED dome and floor lights

Windshield wiper and washer

Behind seat storage

Retractable sunshade

CAT TECHNOLOGIES

VisionLink™

Remote Flash

Remote Troubleshoot

Cat Payload

ELECTRICAL SYSTEM

Maintenance-free 1000 CCA batteries (x4)

Centralized electrical disconnect switch

LED chassis and left-side boom light (1,800 lumen)

Horn and travel alarm

ENGINE

Electric fuel priming pump

Three selectable modes: Power, Smart, Eco

Automatic engine speed control

Automatic engine idle shutdown

Up to 4600m (15,092 ft) altitude capability

52° C (126° F) high-ambient cooling capacity

-32° C (-25° F) cold start capability

Hydraulic reverse fan

Two-stage fuel filter system

Double element air filter with integrated pre-cleaner

HYDRAULIC SYSTEM

Boom and stick regeneration circuits

Boom and stick drift reduction valve

Electronic main control valve

Automatic hydraulic oil warmup

Automatic swing parking brake

High performance hydraulic return filter

Automatic two speed travel

Bio hydraulic oil capability

High torque swing drive

Swing cushion valve

Tool control software

SAFETY AND SECURITY

Caterpillar One Key security system

Lockable service doors

Lockable external tool/storage box

Lockable fuel caps and hydraulic tank

Lockable disconnect switch

Service platforms with anti-skid plate and countersunk bolts

RH handrail and handhold

Signaling/warning horn

Ground-level secondary engine shutoff switch

Rearview camera

Operator Protective Guards

SERVICE AND MAINTENANCE

Side-entry service platform

Integrated vehicle health management system

Grouped location for engine oil and fuel filters

Scheduled Oil Sampling (S·O·S℠) ports

UNDERCARRIAGE AND STRUCTURES

High Wide undercarriage

216 mm (8.5") pitch Cat grease lubricated track chain with PPR3 positive pin retention

Catwalks

Tie down points

Counterweight fuel tank

Heavy-duty track rollers and frames

Heavy-duty travel motor guards

Heavy-duty bottom guards

Track guiding guards

High drawbar final drives

Heavy-duty recoil springs

Heavy-duty hydraulic swivel

Heavy-duty hydraulic swivel guard

FM558 GF/FM558 LL Optional Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

BOOMS AND STICKS

6.15 m (20'2") Reach boom

6.8 m (22'4") Log Loader boom

3.2 m (10'6") Reach stick

4.05 m (13'3") Over/Under stick

4.05 m (13'3") Under/Under stick

4.35 m (14'3") Power Clam stick

CAB

Side entry with 559 mm (22") tilting riser

Rear entry with 1219 mm (48") tilting riser

Rear entry with 1829 mm (72") tilting riser

Cat Stick Steer

Auxiliary relay

ELECTRICAL SYSTEM

Premium lighting - General Forestry

Premium lighting - Log Loader

ENGINE

Cold start package with block heater

HYDRAULIC SYSTEM

Medium pressure circuit

SAFETY AND SECURITY

Inspection lighting

Right-hand sideview camera

UNDERCARRIAGE AND STRUCTURES

5.0 mt (11,023 lb) counterweight fuel tank (optional for General Forestry only)

700 mm (28") double and single grouser shoes

Compatible Technology and Services

Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.

Cat® Remote Flash

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Remote Flash sends an alert from your Cat dealer, prompting you to update the software on your machine. To minimize downtime, updates can be deployed while on the jobsite without having to wait for a dealer technician to arrive. Remote flash decreases maintenance time and keeps your asset running with maximum efficiency.

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Cat® Remote Troubleshooting

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Remote Troubleshoot allows your Cat dealer to run testing while the machine is operating. Once the problem is identified, a technician can fix it with the correct parts and tools the first time, saving time and money. Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency.

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VisionLink™

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VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.

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Remote Flash sends an alert from your Cat dealer, prompting you to update the software on your machine. To minimize downtime, updates can be deployed while on the jobsite without having to wait for a dealer technician to arrive. Remote flash decreases maintenance time and keeps your asset running with maximum efficiency.

Explore Technology

Remote Troubleshoot allows your Cat dealer to run testing while the machine is operating. Once the problem is identified, a technician can fix it with the correct parts and tools the first time, saving time and money. Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency.

Explore Technology

VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.

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Cat Payload for Excavators

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Next generation excavators take on all kinds of tasks - loading, stockpiling, material handling, and more. Cat® Payload technology provides on-the-go weighing to help operators hit exact targets every time and avoid overloading, underloading, or misloading materials.

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Next generation excavators take on all kinds of tasks - loading, stockpiling, material handling, and more. Cat® Payload technology provides on-the-go weighing to help operators hit exact targets every time and avoid overloading, underloading, or misloading materials.

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