2013 Caterpillar 308E SR Specifications The 2013 Caterpillar 308E SR (often designated as CR for Compact Radius / SR for Short Radius) is an 8-ton class mini hydraulic excavator powered by a 66.6 hp Cat C3.3B engine and features an operating weight of 18,371 lbs (8,333 kg). Engine & Performance Engine Model: Cat C3.3B DI Turbo Gross Power: 66.6 hp (49.7 kW) @ 2,400 rpm Net Power: 65.0 hp (48.5 kW) Displacement: 203.2 cu in (3.33 L) Emissions Standard: Meets U.S. EPA Tier 4 Interim / Stage IIIB requirements Weights & Operational Limits Operating Weight: 18,371 lbs (8,333 kg) (with cab, rubber tracks, operator, and full fuel tank) Fuel Capacity: 33.1 gal (125 L) Hydraulic System Capacity: 24.8 gal (94 L) Max Travel Speed: 3.26 mph (5.3 km/h) Working Ranges (Standard Stick) Maximum Digging Depth: 13.8 ft (4,210 mm) Maximum Reach (Ground Level): 20.6 ft (6,290 mm) Maximum Cutting Height: 24.0 ft (7,330 mm) Maximum Dump Height: 17.4 ft (5,300 mm) Hydraulic System & Forces Pump Flow (at 2,000 rpm): 39.6 gal/min (150 L/min) Operating Pressure (Equipment/Travel): 4,061 psi (28,000 kPa) Digging Force (Bucket): 13,534 lbs (60.2 kN) Digging Force (Standard Stick): 9,015 lbs (40.1 kN) Shipping Dimensions Shipping Length: 19.9 ft (6,080 mm)