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308 CR Mini Hydraulic Excavator

308 CR Mini Hydraulic Excavator

At a Glance

Net Power
70.3 HP
Operating Weight
20678 lb
Dig Depth
183 in
Engine Model
Cat C3.3B
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Net Power 70.3HP
Engine Model Cat C3.3B
Stroke 4.7in
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269 70.3HP
Bore 3.7in
Displacement 203in³
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269 71.5HP
Gross Power - ISO 14396 74.3HP


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Operating Weight 20678lb
Note (1) *Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Note (2) **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Maximum Operating Weight with Cab** 20077lb
Minimum Operating Weight with Cab* 18610lb

Dimensions - Long Stick

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Dig Depth 183in
Boom Swing - Left 24in
Maximum Dig Height 277in
Maximum Blade Height 15in
Track Belt/Shoe Width 18in
Cab Height 100in
Tail Swing with Counterweight 65in
O/A Undercarriage Length 113in
Maximum Dump Clearance 200in
Transport Height 99in
Boom Swing - Right 37in
Maximum Blade Depth 16in
Ground Clearance 14in
Stick Length 93in
Maximum Reach 301in
Maximum Reach - Ground Level 294in
O/A Shipping Length 262in
Boom In Reach 127in
Swing Bearing - Height 30in
O/A Track Width 91in
Tail Swing without Counterweight 57in
Vertical Wall 134in


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Height 17in
Width - Standard 91in
Width - Wide 97in

Swing System

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Machine Swing Speed 10.6r/min
Boom Swing - Right 50 degrees
Boom Swing - Left 60 degrees

Hydraulic System

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Digging Force - Bucket 13946lb
Operating Pressure - Travel 4134psi
Operating Pressure - Swing 3626psi
Operating Pressure - Equipment 4134psi
Digging Force - Stick - Long 8032lb
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Primary - Pressure 4134psi
Auxiliary Circuit - Primary - Flow 35gal/min
Pump Flow at 2,400 rpm 44gal/min
Auxiliary Circuit - Secondary - Flow 9gal/min
Digging Force - Stick - Standard 9509lb
Auxiliary Circuit - Secondary - Pressure 4134psi

Dimensions - Standard Stick

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Cab Height 100in
Vertical Wall 118in
Boom In Reach 120in
Tail Swing with Counterweight 65in
Boom Swing - Right 37in
Track Belt/Shoe Width 18in
Maximum Reach 281in
Stick Length 72in
Transport Height 98in
Maximum Blade Height 15in
Boom Swing - Left 24in
Maximum Blade Depth 16in
O/A Track Width 91in
Maximum Dig Height 265in
Maximum Dump Clearance 187in
Maximum Reach - Ground Level 274in
Tail Swing without Counterweight 57in
O/A Undercarriage Length 113in
Swing Bearing - Height 30in
Ground Clearance 14in
Dig Depth 162in
O/A Shipping Length 259in

Service Refill Capacities

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Fuel Tank 39gal (US)
Hydraulic System 29gal (US)
Hydraulic Tank 14gal (US)
Cooling System 2.6gal (US)
Engine Oil 3gal (US)

Travel System

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Maximum Traction Force - High Speed 6250lb
Ground Pressure - Maximum Weight 5.8psi
Ground Pressure - Minimum Weight 5.4psi
Travel Speed - High 3.2mile/h
Travel Speed - Low 1.9mile/h
Maximum Traction Force - Low Speed 15175lb
Gradeability - Maximum 30 degrees

Weight Increase from Minimum Configuration

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Steel Tracks with Pads 752lb
Counterweight 552lb
Long Stick 146lb

Certification - Cab

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Top Guard ISO 10262:1998 (Level II)
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997

Air Conditioning System

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Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.


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Operator Sound Pressure (ISO 6396:2008) 72dB(A)
Note European Union Directive “2000/14/EC”
Average Exterior Sound Pressure (ISO 6395:2008) 99dB(A)