301.8 Mini Hydraulic Excavator
301.8 Mini Hydraulic Excavator
301.8 Mini Hydraulic Excavator
301.8 Mini Hydraulic Excavator

The Cat® 301.8 Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

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Net Power 21 HP
Engine Model C1.1
Stroke 3.2 in
Bore 3 in
Note (2) Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Displacement 69 in³
Note (1) Engine power is tested per ISO 14396:2002.
Note Net power is tested per ISO 9249:2007 and 80/1269/EEC.
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 21 HP
Gross Power - SAE J1995:2014 21.6 HP
Operating Weight 4473 lb
Maximum Operating Weight with Cab** 4473 lb
Minimum Operating Weight with Canopy* 3803 lb
Maximum Operating Weight with Canopy** 4211 lb
Minimum Operating Weight with Cab* 4075 lb
Note (2) **Maximum Weight is based on steel tracks, operator, expandable undercarriage and full fuel tank.
Note (1) *Minimum Weight is based on rubber tracks, operator, fixed undercarriage and full fuel tank.
Note (3) ***CE Plate Weight is based on the most common EU configuration. Includes 75 kg (165 lb) operator and full fuel tank and excludes bucket.
EU: CE Plate Weight with Cab*** 4409 lb
EU: CE Plate Weight with Canopy*** 4145 lb
Dig Depth 101.2 in
Stick Length 45.7 in
Vertical Wall 76.4 in
Maximum Reach - Ground Level 155.9 in
Track Width - Expanded 51.18 in
O/A Undercarriage Length 62.6 in
O/A Shipping Height 90.6 in
Maximum Blade Height 10.6 in
Overall Shipping Length* 146.1 in
Tail Swing 39.2 in
Track Width - Retracted 39 in
Maximum Blade Depth 10.4 in
Boom In Reach 55.9 in
Maximum Dump Clearance 103.9 in
Boom Swing - Right 50 °
Maximum Reach 158.7 in
Boom Swing - Left 65 °
Maximum Dig Height 142.5 in
Swing Bearing - Height 17.4 in
Boom Height - Shipping Position 40.2 in
Minimum Ground Clearance Below Undercarriage 5.9 in
Note *Overall Shipping Length depends on blade position during shipment.
Track Belt/Shoe Width 9.1 in
Height 8.9 in
Width* 39 in
Note *Expanded – 1300 mm (51 in)
Travel Speed - Low 1.8 mile/h
Maximum Traction Force - High Speed 2675.2 lbf
Travel Speed - High 2.7 mile/h
Ground Pressure - Maximum Weight 4.3 psi
Maximum Traction Force - Low Speed 4136.5 lbf
Ground Pressure - Minimum Weight 3.9 psi
Gradeability - Maximum 30 degrees
Boom In Reach 55.9 in
Maximum Reach - Ground Level 149.6 in
Maximum Blade Depth 10.4 in
Stick Length 37.8 in
Vertical Wall 72.8 in
Boom Height - Shipping Position 42.1 in
Track Width - Expanded 51.18 in
Overall Shipping Length* 146.5 in
Maximum Blade Height 10.6 in
Boom Swing - Right 50 °
Note *Overall Shipping Length depends on blade position during shipment.
Minimum Ground Clearance Below Undercarriage 5.9 in
Maximum Reach 152.4 in
Swing Bearing - Height 17.4 in
Maximum Dig Height 139.8 in
Track Belt/Shoe Width 9.1 in
Tail Swing 39.2 in
Boom Swing - Left 65 °
Track Width - Retracted 39 in
O/A Undercarriage Length 62.6 in
Maximum Dump Clearance 100.8 in
O/A Shipping Height 90.6 in
Dig Depth 93.3 in
Operating Pressure - Equipment 3553.4 psi
Auxiliary Circuit - Secondary - Flow 3.7 gal/min
Digging Force - Bucket 4406.3 lbf
Operating Pressure - Travel 3553.4 psi
Digging Force - Stick - Long 2203.1 lbf
Auxiliary Circuit - Secondary - Pressure 3553.4 psi
Operating Pressure - Swing 2132.1 psi
Auxiliary Circuit - Primary - Flow 8.7 gal/min
Pump Flow at 2,400 rpm 17.4 gal/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard 2540.3 lbf
Auxiliary Circuit - Primary - Pressure 3553.4 psi
Tip Over Protective Structure (TOPS) ISO 12117:1997
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Top Guard ISO 10262:1998 (Level I)
Cooling System 1 gal (US)
Hydraulic Tank 4.8 gal (US)
Engine Oil 1.2 gal (US)
Fuel Tank 6.9 gal (US)
Hydraulic System 6.9 gal (US)
Operator Sound Pressure (ISO 6396:2008) 73 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008) 93 dB(A)
Note European Union Directive “2000/14/EC”
Steel Tracks 110 lb
Long Stick 18 lb
Expandable Undercarriage 271 lb
Machine Swing Speed 9.8 r/min

  • Choose either a canopy or a sealed and pressurized cab equipped with air conditioning, adjustable wrist rests, and a suspension seat option to help keep you working comfortably all day long.

  • Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information.

  • Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button. The benefit of less effort and improved control is in your hands!

  • Strong lift and dig performance helps you get the job done faster. The retractable undercarriage lets you access and work in the tightest areas. Dig-to-blade and dozer float features allow for easy clean up.

  • Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt are just a couple of the safety features we’ve built into the machine.

  • Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors. The unique tilt up cab lets you reach additional service areas when needed.

  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.