Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

308 CR Mini Hydraulic Excavator

308 CR

Mini Excavators
The Cat® 308 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.
Net Power
69 hp/51.2 kW
Engine Model
Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
69 hp/51.2 kW
Gross Power - ISO 14396
74.3 hp/55.4 kW

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Net Power
69 hp 51.2 kW
Engine Model
Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
69 hp 51.2 kW
Gross Power - ISO 14396
74.3 hp 55.4 kW
Bore
3.5 in 90 mm
Stroke
4.3 in 110 mm
Displacement
171 in³ 2.8 l
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
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.
Operating Weight
20771 lb 9420 kg
Minimum Operating Weight with Cab*
18754 lb 8505 kg
Maximum Operating Weight with Cab**
20771 lb 9420 kg
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
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.
Counterweight
551 lb 250 kg
Counterweight (extra)
1103 lb 500 kg
Long Stick
146 lb 66 kg
Steel Tracks with Pads
752 lb 341 kg
Angle Blade
490 lb 222 kg
Travel Speed - High
3.2 mile/h 5.1 km/h
Travel Speed - Low
1.9 mile/h 3.1 km/h
Maximum Traction Force - High Speed
6250 lb 27.8 kN
Maximum Traction Force - Low Speed
15175 lb 67.5 kN
Ground Pressure - Minimum Weight
5.4 psi 37.2 kPa
Ground Pressure - Maximum Weight
6 psi 41.2 kPa
Gradeability - Maximum
30 degrees
Cooling System
2.6 gal (US) 10 l
Engine Oil
2.3 gal (US) 8.8 l
Fuel Tank
39 gal (US) 147 l
Hydraulic Tank
14 gal (US) 53 l
Hydraulic System
29 gal (US) 110 l
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
44 gpm 167 L/min
Operating Pressure - Equipment
4134 psi 285 bar
Operating Pressure - Travel
4134 psi 285 bar
Operating Pressure - Swing
3626 psi 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi 285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gpm 33 L/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi 285 bar
Digging Force - Stick - Standard
9509 lb 42.3 kN
Digging Force - Stick - Long
8032 lb 35.7 kN
Digging Force - Bucket
13946 lb 62 kN
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Machine Swing Speed
10.6 r/min 10.6 r/min
Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees
Width - Standard
90.6 in 2300 mm
Width - Wide
96.5 in 2450 mm
Height
17 in 431 mm
Angle Blade Width
90.6 in 2300 mm
Angle Blade Height
17.5 in 441 mm
Angle Blade - Left
25 degrees
Angle Blade - Right
25 degrees
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dig Depth
161.7 in 4108 mm
Vertical Wall
117.8 in 2991 mm
Maximum Reach - Ground Level
273.6 in 6949 mm
Maximum Reach
281.1 in 7141 mm
Maximum Dig Height
265.2 in 6736 mm
Maximum Dump Clearance
187.4 in 4760 mm
Boom In Reach
120.4 in 3059 mm
Tail Swing with Counterweight
62.4 in 1585 mm
Tail Swing without Counterweight
57.1 in 1450 mm
Maximum Blade Height
14.6 in 370 mm
Maximum Blade Depth
16 in 407 mm
Height - Boom Transport - No Tools*
95.7 in 2430 mm
Height - Boom Working - With Tools**
104.7 in 2660 mm
Cab Height
100 in 2541 mm
Swing Bearing - Height
29.7 in 756 mm
O/A Undercarriage Length
113.4 in 2880 mm
Overall Shipping Length - with Counterweight
264 in 6706 mm
Overall Shipping Length - without Counterweight
258.8 in 6574 mm
Boom Swing - Right
50 degrees
Boom Swing - Left
60 degrees
Track Belt/Shoe Width
17.7 in 450 mm
O/A Track Width
90.6 in 2300 mm
Ground Clearance
13.8 in 350 mm
Stick Length
71.7 in 1820 mm
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
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.
Dig Depth
161.7 in 4108 mm
Vertical Wall
117.8 in 2991 mm
Maximum Reach - Ground Level
273.6 in 6949 mm
Maximum Reach
281.1 in 7141 mm
Maximum Dig Height
265.2 in 6736 mm
Maximum Dump Clearance
187.4 in 4760 mm
Boom In Reach
120.4 in 3059 mm
Tail Swing with Counterweight
62.4 in 1585 mm
Tail Swing without Counterweight
57.1 in 1450 mm
Maximum Blade Height
14.6 in 370 mm
Maximum Blade Depth
16 in 407 mm
Height - Boom Transport - No Tools*
95.7 in 2430 mm
Height - Boom Working - With Tools**
104.7 in 2660 mm
Cab Height
100 in 2541 mm
Swing Bearing - Height
29.7 in 756 mm
O/A Undercarriage Length
113.4 in 2880 mm
Overall Shipping Length - with Counterweight
264 in 6706 mm
Overall Shipping Length - without Counterweight
258.8 in 6574 mm
Boom Swing - Right
50 degrees
Boom Swing - Left
60 degrees
Track Belt/Shoe Width
17.7 in 450 mm
O/A Track Width
90.6 in 2300 mm
Ground Clearance
13.8 in 350 mm
Stick Length
71.7 in 1820 mm
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
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.
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).
Operator Sound Pressure (ISO 6396:2008)
72 dB(A) 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) 99 dB(A)
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Recyclability
96%

Equipment

Compatible Attachments

Machine Class
7-9 Ton Mini Excavators
Weight
694.5 lb/315 kg
Length
48 in/1219 mm
Stored Height
18.3 in/464 mm
Impulse Force
6294.65 lb/28 kN
Impact Frequency
2200 bpm
Impulse Force
8992.36 lb/40 kN
Impact Frequency
2200 bpm
Impulse Force
12364.5 lb/55 kN
Impact Frequency
2200 bpm
Width
15.7 in/400 mm
Capacity
12 ft³/339 l
Machine Class
7-9 Ton Mini Excavators
Weight
723.1 lb/328 kg
Machine Class
7-10 Ton Mini Excavators
Weight
672.6 lb/305.1 kg
Width
47.2 in/1200 mm
Capacity
12.7 ft³/360 l
Weight
448.2 lb/203.3 kg
Overall Width
14.6 in/370 mm
Weight
310.9 lb/141 kg
Width
44.3 in/1125 mm
Shank Length
33.9 in/861 mm
Weight
235.9 lb/107 kg
Weight
209.4 lb/95 kg
Lifting Hook Capacity
6613.9 lb/3000 kg
Width
51 in/1300 mm
Capacity
14.1 ft³/400 l
Width
15.7 in/400 mm
Capacity
7.8 ft³/220 l
Width
15.7 in/400 mm
Capacity
7.8 ft³/220 l
Width
51 in/1300 mm
Capacity
14.1 ft³/400 l
Grapple Area
2.8 ft²/0.26 m²
Weight
619.5 lb/281 kg
Overall Width
61.7 in/1566 mm
Working Width
37.8 in/960 mm
Overall Width
40.4 in/1026 mm
Working Width
32.2 in/818 mm
Overall Width
48.3 in/1226 mm
Working Width
39.8 in/1012 mm
Tip Force
43.3 Sh Ton/385 kN
Rotation
360 Degrees
Width
24 in/610 mm
Capacity
8.1 ft³/229.39 l
Width
36 in/914 mm
Capacity
13.7 ft³/387.89 l
Width
18 in/457 mm
Capacity
5.3 ft³/150.1 l
Width
24 in/610 mm
Capacity
8.1 ft³/229.39 l
Width
30 in/762 mm
Capacity
10.9 ft³/308.7 l
Width
32 in/800 mm
Weight
460.8 lb/209 kg
Width
13 in/330 mm
Capacity
3.5 ft³/99.09 l
B6s
Operating Weight - With Tool
610.7 lb/277 kg
Energy Class
501.5 ft·lbf/680 J
B8s
Operating Weight - With Tool
758.4 lb/344 kg
Energy Class
848.2 ft·lbf/1150 J
B9s
Operating Weight - With Tool
1142 lb/518 kg
Energy Class
958.8 ft·lbf/1300 J
Operating Weight - With Tool
1382.3 lb/627 kg
Energy Class
1500.2 ft·lbf/2034 J
Width
47.2 in/1200 mm
Capacity
14.5 ft³/410.6 l
Width
59.1 in/1500 mm
Capacity
18.4 ft³/521 l
Weight
196.2 lb/89 kg
Width
11.5 in/292 mm
Weight
211.6 lb/96 kg
Width
14.6 in/370 mm
Working Width
39.4 in/1000 mm
Required Hydraulics
Standard Flow
Machine Class
7-9 Ton Mini Excavators
Jaw Opening
69.5 in/1765 mm
Grapple Area
8.5 ft³/240 l
Weight
1084.7 lb/492 kg
Compaction Width
17.7 in/449 mm
Number of Wheels
3
Compaction Width
21.9 in/556 mm
Number of Wheels
3
Compaction Width
34.8 in/884 mm
Number of Wheels
5
Working Width
17.7 in/450 mm
Maximum Cutting Depth
5.9 in/150 mm
Compaction Width
12 in/306 mm
Number of Wheels
2
Working Width
13.8 in/350 mm
Maximum Cutting Depth
4.7 in/120 mm
Drive Shaft Torque at Maximum Pressure
5034.6 lb/ft/6826 N·m
Drive Method
Gerotor Motor - Double Planetary Reduction

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