CAT 311F RR Excavator

Engine Details

Displacement 207 cu in (3.4 L)
Bore 3.9 in (99.1 mm)
Stroke 4.4 in (110 mm)
Net Power – Sae J1349 70 hp (52.2 kw)
Gross Power – Sae J1995 74 hp (55.2 kw)
Engine Model Cat C3.4B
Flywheel Power 70 hp (52.2 kw)

Operational Specs

Operating Weight 30600 lb (13880 kg)

Weights

Maximum Operating Weight 30600 lb (13880 kg)
Minimum Operating Weight 27300 lb (12383.1 kg)

Hydraulic System

Pilot System – Maximum Flow 21.9 L/min (1,336 in3/min)
Pilot System – Maximum Pressure 598 psi
Maximum Pressure – Travel 5076 psi
Maximum Pressure – Swing 3336 psi
Boom Cylinder – Bore 4 in (101.6 mm)
Boom Cylinder – Stroke 39 in (990.6 mm)
Stick Cylinder – Bore 4 in (101.6 mm)
Stick Cylinder – Stroke 47 in (1193.8 mm)
Bucket Cylinder – Bore 4 in (101.6 mm)
Bucket Cylinder – Stroke 37 in (939.8 mm)
Main System – Maximum Flow – Total 125 2 L/min (33 2 gal/min)
Maximum Pressure – Equipment 4424 psi

Service Refill Capacities

Cooling System 4.8 gal (18.1 L)
Final Drive – Each 0.8 gal (3 L)
Hydraulic Tank 25.1 gal (95.1 L)
Hydraulic System – Including Tank 42.3 gal (160.2 L)
Fuel Tank Capacity 55.5 gal (210.1 L)
Swing Drive – Each 0.8 gal (3 L)
Engine Oil – With Filter 2.1 gal (8 L)

Sound

Iso 6396 – Operator Noise (Closed) 72 dB(A)
Iso 6395 – Spectator Noise 99 dB(A)

Track

Number Of Carrier Rollers – Each Side 1 piece
Number Of Shoes – Each Side 43 pieces
Number Of Track Rollers – Each Side 6 pieces

Drive

Maximum Travel Speed 3.4 mph (5.5 km/h)
Maximum Drawbar Pull 25700 lb (11657.4 kg)
Maximum Travel Speed – High 3.4 mph (5.5 km/h)
Maximum Travel Speed – Low 2.2 mph (3.6 km/h)

Swing

Swing Torque 22791 lb ft (30900.5 Nm)
Swing Speed 10 rpm
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