CAT 312B Excavator


Boom/Stick Option (Hex) 1

Max Cutting Height 27.01 ft in (8230 mm)
Max Loading Height 19.23 ft in (5860 mm)
Max Reach Along Ground 25.56 ft in (7790 mm)
Max Vertical Wall Digging Depth 14.54 ft in (4430 mm)
Max Digging Depth 16.84 ft in (5130 mm)
Boom/Stick Option (Hex) 1 boom w/ stick 2100 mm

Boom/Stick Option (Hex) 2

Shipping Length Of Unit 24.92 ft in (7595 mm)
Max Cutting Height 27.81 ft in (8475 mm)
Shipping Height Of Unit 9.06 ft in (2760 mm)
Max Loading Height 20 ft in (6095 mm)
Max Reach Along Ground 26.83 ft in (8175 mm)
Max Vertical Wall Digging Depth 16.31 ft in (4970 mm)
Max Digging Depth 18.21 ft in (5550 mm)
Boom/Stick Option (Hex) 2 Boom 14’1″ (4300 mm) / Stick 8’2″” (2500 mm)

Boom/Stick Option (Hex) 3

Shipping Length Of Unit 24.97 ft in (7610 mm)
Max Cutting Height 28.53 ft in (8695 mm)
Max Loading Height 20.77 ft in (6330 mm)
Shipping Height Of Unit 9.06 ft in (2760 mm)
Max Reach Along Ground 28.3 ft in (8625 mm)
Max Vertical Wall Digging Depth 17.54 ft in (5345 mm)
Max Digging Depth 19.85 ft in (6050 mm)
Boom/Stick Option (Hex) 3 Boom 14’1″” (4300 mm) / Stick 9’10″” (3000 mm)

Dimensions

Ground Clearance 1.45 ft in (440 mm)
Height To Top Of Cab 9.06 ft in (2760 mm)
Width To Outside Of Tracks 8.17 ft in (2490 mm)
Length Of Track On Ground 9.13 ft in (2780 mm)
Tail Swing Radius 6.99 ft in (2130 mm)
Removal Counterweight Clearance 3.02 ft in (920 mm)

Undercarriage

Track Gauge 6.53 ft in (1990 mm)
Shoe Size 19.69 in (500 mm)
Drawbar Pull 22930 lb (102 kN)
Ground Pressure 5.66 psi (39.03 kPa)
Max Travel Speed 3.42 mph (5.5 km/h)

Engine Details

Number Of Cylinders 4
Engine Make CAT
Engine Model 3064T
Net Power 84 hp (62.7 kw)
Gross Power 91 hp (67.9 kw)
Power Measured @ 1900 rpm
Displacement 259 cu in (4.3 L)
Aspiration Turbocharged
Bore 4.1 in (102.2 mm)
Stroke 5.2 in (130.1 mm)
Engine Model Cat 3064T Diesel Engine
Flywheel Power 84 hp (62.7 kw)
Eec 80/1269 84 hp (62.7 kw)
Sae J1349 84 hp (62.7 kw)
Iso 9249 84 hp (62.7 kw)

Operational Specs

Operating Weight 27410 lb (12433 kg)
Fuel Tank Capacity 66.1 gal (250 L)
Cooling System Fluid Capacity 4.1 gal (15.5 L)
Hydraulic System Fluid Capacity 42.8 gal (162 L)
Operating Voltage 24 V
Engine Oil Capacity 3.5 gal (13 L)
Swing Drive Fluid Capacity 0.8 gal (2.8 L)
Alternator Supplied Amperage 50 amps
Hydraulic System Relief Valve Pressure 4980 psi (34335.9 kPa)
Hydraulic Pump Flow Capacity 63.5 gal/min (240 L/min)

Swing Mechanism

Swing Speed 12.3 rpm
Swing Torque 22422 lb ft (30400.2 Nm)

Weights

Operating Weight 28680 lb (13009.1 kg)

Buckets

Reference Bucket Capacity 0.6 yd3 (0.5 m3)
Minimum Bucket Capacity 0.5 yd3 (0.4 m3)
Maximum Bucket Capacity 1.1 yd3 (0.8 m3)

Hydraulic System

Pilot System – Maximum Flow 4.8 gal/min
Pilot System – Maximum Pressure 570 psi
Maximum Pressure – Travel 4980 psi
Maximum Pressure – Swing 3340 psi
Maximum Pressure – Implements 4340 psi
Main Implement System – Maximum Flow (2x) 32 gal/min
Boom Cylinder – Bore 4.3 in (109.3 mm)
Boom Cylinder – Stroke 40 in (1016 mm)
Stick Cylinder – Bore 4.8 in (122 mm)
Stick Cylinder – Stroke 47 in (1193.8 mm)
Bucket Cylinder – Bore 4 in (101.6 mm)
Bucket Cylinder – Stroke 37.5 in (952.5 mm)

Service Refill Capacities

Cooling System 4.1 gal (15.6 L)
Fuel Tank Capacity 66 gal (249.9 L)
Final Drive – Each 0.7 gal (2.5 L)
Hydraulic Tank 25.9 gal (98.1 L)
Hydraulic System – Including Tank 42.8 gal (162.1 L)
Engine Oil 3.4 gal (12.9 L)
Swing Drive – Each 0.8 gal (2.9 L)

Drive

Maximum Drawbar Pull 22930 lb (10400.9 kg)
Travel Speed 3.4 mph (5.5 km/h)

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