301.8 Mini Excavator
301.8
The Cat® 301.8 Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
Net Power
21 HP
Operating Weight
4473 lb
Dig Depth
101.2 in
DOWNLOAD TECHNICAL SPECIFICATIONS
Specification
Value
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
Specification
Value
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
Specification
Value
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
Specification
Value
Height
8.9 in
Width*
39 in
Note
*Expanded – 1300 mm (51 in)
Specification
Value
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
Specification
Value
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
Specification
Value
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
Specification
Value
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Specification
Value
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)
Specification
Value
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”
Specification
Value
Steel Tracks
110 lb
Long Stick
18 lb
Expandable Undercarriage
271 lb
Specification
Value
Machine Swing Speed
9.8 r/min
Specification
Value
Recyclability
95%
  • 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 with optional seat belt reminder system 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.
  • The Cat® C1.1 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
  • Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or 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 Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
  • Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
  • Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
  • The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
  • Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
  • Remote Flash minimizes downtime and maintenance time while keeping your asset running with 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.(if equipped)
  • Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)