Caterpillar 312B


Maximum Bucket Capacity1.10 cu yds (1 m)
Minimum Bucket Capacity0.50 cu yds (0 m)
Reference Bucket Capacity0.60 cu yds (0 m)


Ground Clearance1.50 ft (0 m)
Height to Top of Cab9.10 ft (3 m)
Length of Track on Ground9.20 ft (3 m)
Removal Counterweight Clearance3.10 ft (1 m)
Tail Swing Radius7 ft (2 m)
Width to Outside of Tracks8.20 ft (3 m)


Maximum Drawbar Pull22,930 lbs (10,401 kg)
Travel Speed3.40 mph (5 kph)


Bore4.10 in (10 cm)
Displacement259 cu in (0 m)
Engine ModelCat 3064T Diesel Engine
Flywheel Power84 hp (63 kw)
Gross Power91 hp (68 kw)
ISO 924984 hp (63 kw)
Net Power84 hp (63 kw)
Power Measured @1,900 rpm
SAE J134984 hp (63 kw)
Stroke5.20 in (13 cm)

Hydraulic System

4.84.80 gal/min (18 l/min)
570570 psi
Boom Cylinder - Bore4.30 in (11 cm)
Boom Cylinder - Stroke40 in (102 cm)
Bucket Cylinder - Bore4 in (10 cm)
Bucket Cylinder - Stroke37.50 in (95 cm)
Main Implement System - Maximum Flow (2x)32
Maximum Pressure - Implements4,340 psi
Maximum Pressure - Swing3,340 psi
Maximum Pressure - Travel4,980 psi
Stick Cylinder - Bore4.80 in (12 cm)
Stick Cylinder - Stroke47 in (119 cm)


Alternator Supplied Amperage50 A
Cooling System Fluid Capacity4.10 gal (16 l)
Engine Oil Capacity3.50 gal (13 l)
Fuel Capacity66.10 gal (250 l)
Hydraulic Pump Flow Capacity63.50 gal/min (240 l/min)
Hydraulic System Fluid Capacity42.80 gal (162 l)
Hydraulic System Relief Valve Pressure4,980 psi
Operating Voltage24 V
Operating Weight27,410 lbs (12,433 kg)
Swing Drive Fluid Capacity0.80 gal (3 l)

Service Refill Capacities

Cooling System4.10 gal (16 l)
Engine Oil3.40 gal (13 l)
Final Drive - Each0.70 gal (3 l)
Fuel Tank66 gal (250 l)
Hydraulic System - Including Tank42.80 gal (162 l)
Hydraulic Tank25.90 gal (98 l)
Swing Drive - Each0.80 gal (3 l)

Swing Mechanism

Swing Speed12.30 rpm


Drawbar Pull22,930 lbs (10,401 kg)
Ground Pressure5.70 psi
Max Travel Speed3.50 mph (6 kph)
Shoe Size19.70 in (50 cm)
Track Gauge6.60 ft (2 m)


Operating Weight28,680 lbs (13,009 kg)

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