Caterpillar 311F RR Midi Excavator
Units
Specifications
Engine
Displacement
207cu in
Bore
3.9in
Stroke
4.4in
Net Power - Sae J1349
70hp
Gross Power - Sae J1995
74hp
Engine Model
Cat C3.4B
Flywheel Power
70hp
Operational
Operating Weight
30600lb
Weights
Maximum Operating Weight
30600lb
Minimum Operating Weight
27300lb
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
4in
Boom Cylinder - Stroke
39in
Stick Cylinder - Bore
4in
Stick Cylinder - Stroke
47in
Bucket Cylinder - Bore
4in
Bucket Cylinder - Stroke
37in
Main System - Maximum Flow - Total
125 2 L/min (33 2 gal/min)
Maximum Pressure - Equipment
4424 psi
Service Refill Capacities
Cooling System
4.8gal
Final Drive - Each
0.8gal
Hydraulic Tank
25.1gal
Hydraulic System - Including Tank
42.3gal
Fuel Tank Capacity
55.5gal
Swing Drive - Each
0.8gal
Engine Oil - With Filter
2.1gal
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
3.4mph
Maximum Drawbar Pull
25700lb
Maximum Travel Speed - High
3.4mph
Maximum Travel Speed - Low
2.2mph
Swing
Swing Torque
22791lb ft
Swing Speed
10rpm
