The Caterpillar 308 CR is a compact mini excavator designed for construction, utility, landscaping, and site preparation work. It features a reduced tail swing design for operation in confined spaces, with a hydraulic system suited for digging, trenching, grading, and material handling. The 308 CR is typically equipped with a fuel-efficient diesel engine, auxiliary hydraulics, and a comfortable operator station with intuitive controls. Its compact size supports transportability and access to tight job sites while maintaining digging performance and stability. The Caterpillar 308 CR is part of Caterpillar's mini excavator lineup for contractors needing versatility in a small machine footprint.
General Specifications
Caterpillar 308 CR Mini Excavator General Specifications specifications
Digging Depth ft (m)
15.2 (4.6) — Starting 2025 Model Year
Digging Reach ft. (m)
25.1 (7.7) — Starting 2025 Model Year
Engine
C3.3B — Starting 2021 Model Year
Engine hp (kW)
70.3 (52.4) — Starting 2025 Model Year
Max Digging Depth
150.2 in ft (45.78 m) — Starting 2023 Model Year
Net Power
69.50 hp (51.83 kw) — Starting 2023 Model Year
Operating Weight
20,385.00 lbs (9,246.49 kg) — Starting 2023 Model Year
Operating Weight lbs (kg)
20,678 (9,379.4) — Starting 2025 Model Year
Blades
Caterpillar 308 CR Mini Excavator Blades specifications
Blade Height
17.00 in (43.18 cm)
Dimensions - Long Stick
Caterpillar 308 CR Mini Excavator Dimensions - Long Stick specifications
Boom In Reach
126.60 in (321.56 cm)
Boom Swing - Left
20.00 in (50.80 cm)
Boom Swing - Right
38.00 in (96.52 cm)
Dig Depth
182.80 in (464.31 cm)
Maximum Blade Depth
16.10 in (40.89 cm)
Maximum Blade Height
14.50 in (36.83 cm)
Maximum Dig Height
277.10 in (703.83 cm)
Maximum Dump Clearance
199.60 in (506.98 cm)
Maximum Reach
300.70 in (763.78 cm)
Maximum Reach - Ground Level
293.70 in (746.00 cm)
O/A Shipping Length
262.00 in (665.48 cm)
O/A Track Width
90.60 in (230.12 cm)
O/A Undercarriage Length
113.90 in (289.31 cm)
Stick Length
92.80 in (235.71 cm)
Swing Bearing - Height
28.90 in (73.41 cm)
Track Belt/Shoe Width
17.70 in (44.96 cm)
Vertical Wall
134.10 in (340.61 cm)
Dimensions - Standard Stick
Caterpillar 308 CR Mini Excavator Dimensions - Standard Stick specifications
Boom In Reach
120.40 in (305.82 cm)
Boom Swing - Left
20.00 in (50.80 cm)
Boom Swing - Right
38.00 in (96.52 cm)
Dig Depth
161.80 in (410.97 cm)
Maximum Blade Depth
16.10 in (40.89 cm)
Maximum Blade Height
14.50 in (36.83 cm)
Maximum Dig Height
265.20 in (673.61 cm)
Maximum Dump Clearance
187.40 in (476.00 cm)
Maximum Reach
281.10 in (713.99 cm)
Maximum Reach - Ground Level
273.60 in (694.94 cm)
O/A Shipping Length
258.70 in (657.10 cm)
O/A Track Width
90.60 in (230.12 cm)
O/A Undercarriage Length
113.90 in (289.31 cm)
Stick Length
71.80 in (182.37 cm)
Swing Bearing - Height
28.90 in (73.41 cm)
Track Belt/Shoe Width
17.70 in (44.96 cm)
Vertical Wall
117.80 in (299.21 cm)
Engine
Caterpillar 308 CR Mini Excavator Engine specifications
Bore
3.70 in (9.40 cm)
Displacement
203.00 cu in (3,326.58 cu cm)
Engine Model
Cat C3.3B
Net Power
70.30 hp (52.42 kw)
Stroke
4.70 in (11.94 cm)
Hydraulic System
Caterpillar 308 CR Mini Excavator Hydraulic System specifications
Auxiliary Circuit - Primary - Flow
35.00 gpm (132.48 lpm)
Auxiliary Circuit - Primary - Pressure
4134 psi
Auxiliary Circuit - Secondary - Flow
9.00 gpm (34.07 lpm)
Auxiliary Circuit - Secondary - Pressure
4134 psi
Digging Force - Bucket
13,946.00 lbs (6,325.81 kg)
Digging Force - Stick - Long
8,032.00 lbs (3,643.26 kg)
Digging Force - Stick - Standard
9,509.00 lbs (4,313.22 kg)
Hydraulic System Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Equipment
4134 psi
Operating Pressure - Swing
3626 psi
Operating Pressure - Travel
4134 psi
Pump Flow at 2,400 rpm
44.00 gpm (166.54 lpm)
Service Refill Capacities
Caterpillar 308 CR Mini Excavator Service Refill Capacities specifications
Cooling System
2.60 gal (9.84 l)
Engine Oil
3.00 gal (11.36 l)
Fuel Tank
39.00 gal (147.62 l)
Hydraulic System
27.00 gal (102.20 l)
Hydraulic Tank
14.00 gal (52.99 l)
Swing System
Caterpillar 308 CR Mini Excavator Swing System specifications
Machine Swing Speed
10.6 rpm
Travel System
Caterpillar 308 CR Mini Excavator Travel System specifications
Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
6 psi
Ground Pressure - Minimum Weight
5 psi
Maximum Traction Force - High Speed
6,250.00 lbs (2,834.96 kg)
Maximum Traction Force - Low Speed
15,175.00 lbs (6,883.27 kg)
Travel Speed - High
3.20 mph (5.15 kph)
Travel Speed - Low
1.90 mph (3.06 kph)
Weights
Caterpillar 308 CR Mini Excavator Weights specifications
Operating Weight
20,678.00 lbs (9,379.39 kg)
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