Overview
Cat® forestry mulchers have industry-leading features to ensure you are getting the best productivity from a mulcher for tracked and wheeled excavators, all while keeping your work environment and equipment safe.
Mulchers HM4815 Dedicated Bite Limiter Forestry Mulcher
Key Specs
- Motor
- Variable Torque Hydraulic Piston Motor
- Variable Torque Hydraulic Piston Motor
- Overall Width
- 77.6 in
- 1871 mm
- Drive Method
- Poly Chain Belt
- Poly Chain Belt
Features At A Glance
Displaying 1-6 of 4
Reliable Performance
- Cut trees from 152 mm (6 in) up to 407 mm (16 in) in diameter.
- Two rotor types:
- Standard – rotor with teeth only
- Bite limiter – rotor with teeth separated by ribs to help prevent rotor stalling and creates finer shredded materials
- Variable torque hydraulic piston motor shifts between high speed, low torque and low speed, high torque to give you speed when you need it and power when it counts.
- Brackets allow the mulchers to be mounted to a variety of excavators within each size class.
- The staggered tooth design reduces stalling and jamming.
- Mulcher teeth options vary by application and preference on final material size:
- Standard: Most commonly used option. Fairly fine final product used where there is minimal rock present and durability is needed.
- Rock Crushing: Larger final product, but can work in applications where rocks are present.
- Bite Limiter: Very fine final product due to aggressive edge of the blade with the limiters and counter knives. Use where rocks are minimal and there are large amounts of standing timber.
- Hardened counter blades reduce finished material size and increase the rate of composting.
Easy Maintenance
- Access internal components quickly and easily with bolt-on service panels.
- Poly chain belt driven transmission eliminates slippage on startup, reducing maintenance costs.
- The motor is integrated into the frame to protect it from dust, damage, and impact from falling debris.
- Ensure service panel security with access bolts recessed into the panel, protecting them from debris.
- Get back to work faster with field-replaceable wear parts.
Prioritized Safety
- Hydraulic mulching door keeps the work environment and equipment safe by dispersing materials according to your application and surroundings.
- The mulching door operation is controlled by electric diverter valve or medium pressure hydraulic kits from the cab.
- Door closed – right-of-way clearing, near powerlines and pipelines, and roadside maintenance.
- Door open – vegetation management, jobsite clearing, forest wood fuel removal, and firebreaks.
- Flow control valve protects the motor from excessive flow.
- Ground-level primary grease points keep you safe while performing daily maintenance.
- Bolt-on, replaceable skids keep the mulcher from going into the ground or into materials expediting wear or causing damage.
Boost Efficiency and Productivity with Integrated Technologies
- Never waste time looking for your attachments again. Cat PL161 Attachment Locator is available on most attachments.
- Track your entire fleet of attachments and machines from one source. Attachments with asset tracking can be viewed within VisionLink® alongside Product Link™ subscribed equipment.
- Keep your assets secure. Attachments with an asset tracker send an alert if they leave an easy-to-setup site boundary.
Product Specifications for HM4815 Dedicated Bite Limiter Forestry Mulcher
| Motor | Variable Torque Hydraulic Piston Motor Variable Torque Hydraulic Piston Motor |
| Overall Width | 77.6 in 1871 mm |
| Drive Method | Poly Chain Belt Poly Chain Belt |
| Working Width | 62.5 in 1587 mm |
| Maximum Cutting Diameter | 12 in 305 mm |
| Overall Height | 41.8 in 1061 mm |
| Length | 36 in 918 mm |
| Fixed Teeth per Drum | 26 26 |
| Weight | 3527 lb 1600 kg |
| Optimal Hydraulic Flow | 151-201 L/min (40-53 gpm) 151-201 L/min (40-53 gpm) |
| Optimal Hydraulic Pressure | 207-345 bar (3000-5000 psi) 207-345 bar (3000-5000 psi) |
| Drum Speed | 2300-2500 rpm 2300-2500 rpm |
See how HM4815 Dedicated Bite Limiter Forestry Mulcher compares against frequently compared products.
Mulchers
HM4815 Dedicated Bite Limiter Forestry Mulcher
Selected
- Motor
- Variable Torque Hydraulic Piston Motor
- Variable Torque Hydraulic Piston Motor
- Overall Width
- 77.6 in
- 1871 mm
- Drive Method
- Poly Chain Belt
- Poly Chain Belt
Mulchers
HM4015 Standard Forestry Mulcher
- Motor
- Variable Torque Hydraulic Piston Motor
- Variable Torque Hydraulic Piston Motor
- Overall Width
- 74 in
- 1871 mm
- Drive Method
- Poly Chain Belt
- Poly Chain Belt
Mulchers
HM5515 Standard Forestry Mulcher
- Motor
- Variable Torque Hydraulic Piston Motor
- Variable Torque Hydraulic Piston Motor
- Overall Width
- 78 in
- 1984 mm
- Drive Method
- Poly Chain Belt
- Poly Chain Belt
assignment Product Brochures and More Are Ready to Download!
Caterpillar product brochures and other informational documents are available for your growing business.
Compatible Products
Maximize your equipment investment with Cat related products
Excavators
Forest Machines
Material Handlers
Compatible Technology and Services
Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.
-
Cat® PL161 Attachment Tracker
The Cat PL161 Attachment Tracker is the most advanced OEM integrated solution for attachment tracking. The PL161 mounts easily to your attachments or anything else you want to track.
1
-
8
of
9 Items
items
The Cat PL161 Attachment Tracker is the most advanced OEM integrated solution for attachment tracking. The PL161 mounts easily to your attachments or anything else you want to track.
Your Business
North America – English
Caterpillar Brands
- Caterpillar.com
- My Marketing Preferences
- Site Map
- Cookie Settings
- Legal
- Privacy
- Do Not Sell or Share My Personal Information
- Accessibility Statement
- US-English
- © 2026 Caterpillar. All Rights Reserved.