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.
Engine | |
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Engine Model | Cat C3.3B |
Net Power | 70.3 HP / 52.4 kW |
Bore | 3.7 in / 94 mm |
Displacement | 203 in³ / 3.33 l |
Gross Power - ISO 14396 | 74.3 HP / 55.4 kW |
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269 | 71.5 HP / 53.3 kW |
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269 | 70.3 HP / 52.4 kW |
Stroke | 4.7 in / 120 mm |
Weights | |
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Operating Weight | 20678 lb / 9380 kg |
Maximum Operating Weight with Cab** | 20678 lb / 9380 kg |
Minimum Operating Weight with Cab* | 17960 lb / 8146 kg |
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. |
Blade | |
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Height | 17 in / 431 mm |
Width - Standard | 91 in / 2300 mm |
Width - Wide | 97 in / 2450 mm |
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. |
Certification - Cab | |
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Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
Tip Over Protective Structure (TOPS) | ISO 12117:1997 |
Top Guard | ISO 10262:1998 (Level II) |
Dimensions - Long Stick | |
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Boom In Reach | 127 in / 3215 mm |
Boom Swing - Left | 20 in / 503 mm |
Boom Swing - Right | 38 in / 963 mm |
Cab Height | 100 in / 2540 mm |
Dig Depth | 183 in / 4644 mm |
Ground Clearance | 14 in / 349 mm |
Maximum Blade Depth | 16 in / 408 mm |
Maximum Blade Height | 15 in / 369 mm |
Maximum Dig Height | 277 in / 7038 mm |
Maximum Dump Clearance | 200 in / 5071 mm |
Maximum Reach | 301 in / 7637 mm |
Maximum Reach - Ground Level | 294 in / 7461 mm |
O/A Shipping Length | 262 in / 6656 mm |
O/A Track Width | 91 in / 2300 mm |
O/A Undercarriage Length | 113 in / 2880 mm |
Stick Length | 93 in / 2358 mm |
Swing Bearing - Height | 30 in / 755 mm |
Tail Swing with Counterweight | 65 in / 1645 mm |
Tail Swing without Counterweight | 57 in / 1450 mm |
Track Belt/Shoe Width | 18 in / 450 mm |
Transport Height | 99 in / 2522 mm |
Vertical Wall | 134 in / 3405 mm |
Dimensions - Standard Stick | |
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Boom In Reach | 120 in / 3059 mm |
Boom Swing - Left | 20 in / 503 mm |
Boom Swing - Right | 38 in / 963 mm |
Cab Height | 100 in / 2540 mm |
Dig Depth | 162 in / 4109 mm |
Ground Clearance | 14 in / 349 mm |
Maximum Blade Depth | 16 in / 408 mm |
Maximum Blade Height | 15 in / 369 mm |
Maximum Dig Height | 265 in / 6735 mm |
Maximum Dump Clearance | 187 in / 4759 mm |
Maximum Reach | 281 in / 7141 mm |
Maximum Reach - Ground Level | 274 in / 6949 mm |
O/A Shipping Length | 259 in / 6571 mm |
O/A Track Width | 91 in / 2300 mm |
O/A Undercarriage Length | 113 in / 2880 mm |
Stick Length | 72 in / 1823 mm |
Swing Bearing - Height | 30 in / 755 mm |
Tail Swing with Counterweight | 65 in / 1645 mm |
Tail Swing without Counterweight | 57 in / 1450 mm |
Track Belt/Shoe Width | 18 in / 450 mm |
Transport Height | 98 in / 2487 mm |
Vertical Wall | 118 in / 2992 mm |
Hydraulic System | |
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Auxiliary Circuit - Primary - Flow | 35 gal/min / 131 l/min |
Auxiliary Circuit - Primary - Pressure | 4134 psi / 285 bar |
Auxiliary Circuit - Secondary - Flow | 9 gal/min / 33 l/min |
Auxiliary Circuit - Secondary - Pressure | 4134 psi / 285 bar |
Digging Force - Bucket | 13946 lb / 62 kN |
Digging Force - Stick - Long | 8032 lb / 35.7 kN |
Digging Force - Stick - Standard | 9509 lb / 42.3 kN |
Operating Pressure - Equipment | 4134 psi / 285 bar |
Operating Pressure - Swing | 3626 psi / 250 bar |
Operating Pressure - Travel | 4134 psi / 285 bar |
Pump Flow at 2,400 rpm | 44 gal/min / 167 l/min |
Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
Service Refill Capacities | |
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Cooling System | 2.6 gal (US) / 10 l |
Engine Oil | 3 gal (US) / 11.2 l |
Fuel Tank | 39 gal (US) / 147 l |
Hydraulic System | 27 gal (US) / 104 l |
Hydraulic Tank | 14 gal (US) / 53 l |
Sound | |
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Average Exterior Sound Pressure (ISO 6395:2008) | 99 dB(A) |
Note | European Union Directive “2000/14/EC” |
Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) |
Swing System | |
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Boom Swing - Left | 60 degrees |
Boom Swing - Right | 50 degrees |
Machine Swing Speed | 10.6 r/min |
Travel System | |
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Gradeability - Maximum | 30 degrees |
Ground Pressure - Maximum Weight | 6 psi / 40.72 kPa |
Ground Pressure - Minimum Weight | 5 psi / 35.36 kPa |
Maximum Traction Force - High Speed | 6250 lb / 27.8 kN |
Maximum Traction Force - Low Speed | 15175 lb / 67.5 kN |
Travel Speed - High | 3.2 mile/h / 5.1 km/h |
Travel Speed - Low | 1.9 mile/h / 3.1 km/h |
Weight Increase from Minimum Configuration | |
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Counterweight | 552 lb / 250 kg |
Long Stick | 146 lb / 66 kg |
Steel Tracks with Pads | 752 lb / 341 kg |
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