Key Specs
The Cat® 305.5 Mini Excavator with standard tail and fixed side boom design delivers high performance with low fuel consumption. The durable and reliable structure helps you work in applications with high productivity but low operating cost.
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| Engine Model | Cat C2.2 Cat C2.2 |
| Net Power | 43.7 hp 34.1 kW |
| Net Power - 2,400 rpm - ISO 9249/SAE J1349 | 43.7 hp 32.6 kW |
| Emissions | Meets China Nonroad Stage IV emission standard. Meets China Nonroad Stage IV emission standard. |
| Bore | 3.3 in 84 mm |
| Stroke | 3.9 in 100 mm |
| Note | Advertised power is tested per the specified standard in effect at the time of manufacture.. Advertised power is tested per the specified standard in effect at the time of manufacture.. |
| Displacement | 134 in³ 2.2 l |
| Note (1) | Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. |
| Gross Power - 2,400 rpm - SAE J1995:2014 | 45.7 hp 34.1 kW |
| Operating Weight | 12345 lb 5600 kg |
| Operating Weight - With Cab | 12345 lb 5600 kg |
| Note | Weight includes counterweight, steel tracks, 0.22 m³ bucket, operator. Weight includes counterweight, steel tracks, 0.22 m³ bucket, operator. |
| Width | 76.9 in 1952 mm |
| Height | 13.3 in 339 mm |
| Cooling System | 2.6 gal (US) 10 l |
| Engine Oil | 2.1 gal (US) 9 l |
| Hydraulic Tank | 15.3 gal (US) 58 l |
| Fuel Tank | 43.5 gal (US) 165 l |
| Hydraulic System | 22.5 gal (US) 94 l |
| Bucket Width | 30.2 in 766 mm |
| Bucket Capacity | 7.8 ft³ 0.22 m³ |
| Ground Pressure - Maximum Weight | 4.7 psi 32.2 kPa |
| Travel Speed - High | 2.7 mile/h 3.8 km/h |
| Maximum Traction Force | 9330 lbf 41.5 kN |
| Travel Speed - Low | 1.7 mile/h 2.6 km/h |
| Gradeability - Maximum | 30° 30° |
| Operating Pressure - Travel | 3655 psi 25200 kPa |
| Digging Force - Stick | 6158 lbf 27.4 kN |
| Pump Flow at 2,400 rpm | 37 gpm 147 L/min |
| Type (2) | Cat Cat |
| Type (1) | Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Digging Force - Bucket | 7936 lbf 35.3 kN |
| Note | *Flow and pressure are not combinable. Under load, as flow rises pressure goes down. *Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Operating Pressure - Equipment | 3655 psi 25200 kPa |
| Operating Pressure - Swing | 3133 psi 21600 kPa |
| Maximum Auxiliary Circuit - Primary - Pressure at Pump* | 3655 psi 252 bar |
| Auxiliary Circuit - Primary - Flow at Pump* | 29.1 gpm 110 L/min |
| Machine Swing Speed | 10.5 rpm 10.5 rpm |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 ISO 12117-2:2008 |
| Dynamic Operating Sound Pressure (ISO 6396:2008) | <80 dB(A) <80 dB(A) |
| Average Exterior Sound Pressure (ISO 6395:2008) | <98 dB(A) <98 dB(A) |
| Note | *Working range and dimensions are for standard stick. *Working range and dimensions are for standard stick. |
| Maximum Dig Height | 17.9 ft 5461 mm |
| Tail Swing Radius | 5.2 ft 1580 mm |
| Maximum Blade Height | 1.2 ft 365 mm |
| Maximum Reach - Ground Level | 19.1 mm 5829 mm |
| Track Shoe Width | 1.3 ft 400 mm |
| Maximum Blade Depth | 1.6 ft 482 mm |
| Vertical Wall | 7.2 ft 2206 mm |
| Ground Clearance - Frame | 1 ft 312 mm |
| Boom in Reach | 7.9 ft 2421 mm |
| Swing Bearing Height | 2.1 ft 628 mm |
| Maximum Dump Clearance | 12.6 ft 3834 mm |
| Overall Track Length | 8 ft 2440 mm |
| Overall Shipping Height | 8.3 ft 2549 mm |
| Maximum Reach | 19.5 ft 5955 mm |
| Dig Depth | 12.2 ft 3722 mm |
| Overall Shipping Width | 6.4 ft 1950 mm |
| Overall Shipping Length | 18.9 ft 5765 mm |
| Boom Height in Shipping Position | 6.1 ft 1860 mm |
| Maximum Dump Height | 12.6 ft 3835 mm |
| Maximum Reach | 19.5 ft 5955 mm |
| Maximum Digging Height | 17.9 ft 5460 mm |
| Maximum Reach - Ground Line | 19.1 ft 5830 mm |
| Maximum Depth | 12.2 ft 3720 mm |
| Maximum Vertical Wall | 7.3 ft 2210 mm |
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