New CAT Equipment

308 CR Mini Hydraulic Excavator

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.

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Product Specs

Engine

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

Weights

Operating Weight 20678 lb
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** 20077 lb
Minimum Operating Weight with Cab* 18610 lb

Dimensions - Long Stick

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

Blade

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

Swing System

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

Hydraulic System

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

Dimensions - Standard Stick

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

Service Refill Capacities

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

Travel System

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

Weight Increase from Minimum Configuration

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

Certification - Cab

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

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.

Sound

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