Caterpillar 312B Excavator

Boom/Stick Excavator Option 1

Max Cutting Height 27 ft (8 m)
Max Digging Depth 17 ft (5 m)
Max Loading Height 19 ft (6 m)
Max Reach Along Ground 26 ft (8 m)
Max Vertical Wall Digging Depth 15 ft (4 m)

Boom/Stick Excavator Option 2

Max Cutting Height 28 ft (9 m)
Max Digging Depth 18 ft (6 m)
Max Loading Height 20 ft (6 m)
Max Reach Along Ground 27 ft (8 m)
Max Vertical Wall Digging Depth 16 ft (5 m)
Shipping Height of Unit 9 ft (3 m)
Shipping Length of Unit 25 ft (8 m)

Boom/Stick Excavator Option 3

Max Cutting Height 29 ft (9 m)
Max Digging Depth 20 ft (6 m)
Max Loading Height 21 ft (6 m)
Max Reach Along Ground 28 ft (9 m)
Max Vertical Wall Digging Depth 18 ft (5 m)
Shipping Height of Unit 9 ft (3 m)
Shipping Length of Unit 25 ft (8 m)

Bucket

Maximum Bucket Capacity 1 cu yd (1 cu m)
Minimum Bucket Capacity 1 cu yd (0 cu m)
Reference Bucket Capacity 1 cu yd (0 cu m)

Dimensions

Ground Clearance 2 ft (0 m)
Height – Top of Cab 9 ft (3 m)
Length of Track on Ground 9 ft (3 m)
Removal Counterweight Clearance 3 ft (1 m)
Tail Swing Radius 7 ft (2 m)
Width to Outside of Tracks 8 ft (2 m)

DRIVE SYSTEM

Maximum Drawbar Pull 22,930 lbs (10,401 kg)
Travel Speed 3 mph (5 kph)

Engine

Aspiration Turbocharged
Bore 4 in (10 cm)
Displacement 259 cu in (4,244 cu cm)
Engine Model Cat 3064T Diesel Engine
Flywheel Power 84 hp (63 kw)
Gross Power 91 hp (68 kw)
ISO 9249 84 hp (63 kw)
Net Power 84 hp (63 kw)
Power Measured @ 1900 rpm
SAE J1349 84 hp (63 kw)
Stroke 5 in (13 cm)

Hydraulic System

Boom Cylinder – Bore 4 in (11 cm)
Boom Cylinder – Stroke 40 in (102 cm)
Bucket Cylinder – Bore 4 in (10 cm)
Bucket Cylinder – Stroke 38 in (95 cm)
Main Implement System – Maximum Flow (2x) 32 gpm (121 lpm)
Maximum Pressure – Implements 4340 psi
Maximum Pressure – Swing 3340 psi
Maximum Pressure – Travel 4980 psi
Stick Cylinder – Bore 5 in (12 cm)
Stick Cylinder – Stroke 47 in (119 cm)

Operating Specifications

Alternator Supplied Amperage 50 amps
Cooling System Fluid Capacity 4 gal (16 l)
Engine Oil Capacity 4 gal (13 l)
Fuel Capacity 66 gal (250 l)
Hydraulic Pump Flow Capacity 64 gpm (240 lpm)
Hydraulic System Fluid Capacity 43 gal (162 l)
Hydraulic System Relief Valve Pressure 4980 psi
Operating Voltage 24 volts
Operating Weight 27,410 lbs (12,433 kg)
Swing Drive Fluid Capacity 1 gal (3 l)

Service Refill Capacities

Cooling System 4 gal (16 l)
Engine Oil 3 gal (13 l)
Final Drive – Each 1 gal (3 l)
Fuel Tank 66 gal (250 l)
Hydraulic System – Including Tank 43 gal (162 l)
Hydraulic Tank 26 gal (98 l)
Swing Drive – Each 1 gal (3 l)

Swing Mechanism

Swing Speed 12.3 rpm

Undercarriage

Drawbar Pull 22,930 lbs (10,401 kg)
Ground Pressure 5.7 psi
Max Travel Speed 4 mph (6 kph)
Shoe Size 20 in (50 cm)
Track Gauge 7 ft (2 m)

Weights

Operating Weight 28,680 lbs (13,009 kg)
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