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Caterpillar

308 CR

Mini Excavator

Net Power
70.3 hp
All mini excavators
Caterpillar 308 CR Mini Excavator
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Image: cat.com

Specifications

74 data points

Engine

Engine specifications
Engine ModelCat C3.3B
Displacement203 in³
Net Power70.3 hp
Bore4 in
Stroke5 in

Weights

Weights specifications
Operating Weight20,678 lb

Hydraulic System

Hydraulic System specifications
Operating Pressure - Equipment4,134 psi
Operating Pressure - Swing3,626 psi
Operating Pressure - Travel4,134 psi
Digging Force - Bucket13,946 lb
Digging Force - Stick - Standard9,509 lb
Digging Force - Stick - Long8,032 lb
Hydraulic System TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm44.0 gal/min
Auxiliary Circuit - Secondary - Flow9.0 gal/min
Auxiliary Circuit - Secondary - Pressure4,134 psi
Auxiliary Circuit - Primary - Flow35.0 gal/min
Auxiliary Circuit - Primary - Pressure4,134 psi

General Specifications

General Specifications specifications
Net Power69.50 hp (51.83 kw) — Starting 2023 Model Year
Operating Weight lbs (kg)20,678 (9,379.4) — Starting 2025 Model Year
Operating Weight20,385.00 lbs (9,246.49 kg) — Starting 2023 Model Year
Max Digging Depth150.2 in ft (45.78 m) — Starting 2023 Model Year
Digging Depth ft (m)15.2 (4.6) — Starting 2025 Model Year
Engine hp (kW)70.3 (52.4) — Starting 2025 Model Year
Digging Reach ft. (m)25.1 (7.7) — Starting 2025 Model Year
EngineC3.3B — Starting 2021 Model Year

Service Refill Capacities

Service Refill Capacities specifications
Engine Oil3.0 gal
Hydraulic Tank14.0 gal
Fuel Tank39.0 gal
Hydraulic System27.0 gal
Cooling System2.6 gal

Blades

Blades specifications
Blade Height17 in

Swing System

Swing System specifications
Machine Swing Speed11 rpm

Travel System

Travel System specifications
Travel Speed - High3.2 mph
Travel Speed - Low1.9 mph
Maximum Traction Force - High Speed6,250 lb
Maximum Traction Force - Low Speed15,175 lb
Gradeability - Maximum30 °
Ground Pressure - Maximum Weight6 psi
Ground Pressure - Minimum Weight5 psi

Dimensions - Long Stick

Dimensions - Long Stick specifications
Boom In Reach127 in
Dig Depth183 in
Maximum Blade Depth16 in
Maximum Blade Height15 in
Maximum Dig Height277 in
Maximum Dump Clearance200 in
Maximum Reach301 in
Maximum Reach - Ground Level294 in
O/A Undercarriage Length114 in
Swing Bearing - Height29 in
Track Belt/Shoe Width18 in
Vertical Wall134 in
Boom Swing - Left20 in
Boom Swing - Right38 in
O/A Shipping Length262 in
O/A Track Width91 in
Stick Length93 in

Dimensions - Standard Stick

Dimensions - Standard Stick specifications
Boom In Reach120 in
Dig Depth162 in
Maximum Blade Depth16 in
Maximum Blade Height15 in
Maximum Dig Height265 in
Maximum Dump Clearance187 in
Maximum Reach281 in
Maximum Reach - Ground Level274 in
O/A Undercarriage Length114 in
Swing Bearing - Height29 in
Track Belt/Shoe Width18 in
Vertical Wall118 in
Boom Swing - Left20 in
Boom Swing - Right38 in
O/A Shipping Length259 in
O/A Track Width91 in
Stick Length72 in

Comparable machines

Other mini excavators in a similar weight class.