Cat GC40K Specifications
The Caterpillar GC40K is a 4,000 kg capacity
LPG-powered forklift engineered for efficient material handling in warehouse and
industrial environments. This cushion tire model combines compact dimensions
with reliable performance characteristics, featuring a standard PSI 4X engine or
optional GM V6 powerplant. The truck utilizes a powershift transmission for
smooth operation and a hydraulic system delivering 200 bar pressure for
attachment compatibility.
With a turning radius of 2,285 mm and
gradeability reaching 33 percent, the GC40K provides capable performance
in confined spaces including manufacturing facilities, retail
distribution centers, and logistics operations. The design incorporates
a robust chassis and hydraulic steering for maneuverability, while
service access points facilitate routine maintenance procedures. The
GC40K was manufactured by Caterpillar as part of their K-series forklift
line, establishing a reputation for reliability in lifting and material
handling operations.
Standard engine manufacturer and model: PSI 4X
Standard engine type: 6-cylinder LPG
Standard engine rated output to ISO 1585: 78 kW (104.6 HP) at 2,600 rpm
Standard engine displacement: 4,300 cc (262 cu.in)
Standard engine number of cylinders: 6
Optional engine manufacturer and model: GM V6
Optional engine rated output to ISO 1585: 69 kW (92.5 HP) at 2,450 rpm
Optional engine power: 92.5 hp
Optional engine torque: 220 lb-ft (298 Nm) at 1,200 rpm
Optional engine displacement: 4,300 cc (262 cu.in)
Optional engine number of cylinders: 6
Fuel type: LPG (gas)
Lubrication system: Full-pressure lubrication with oil filter
Cooling system: Liquid-cooled with pressurized radiator
Transmission type: Powershift
Transmission gears forward / reverse: 1 / 1
Travel speed with load: 19.0 km/h (11.8 mph)
Travel speed without load: 19.5 km/h (12.1 mph)
Drive axle type: Heavy-duty drive axle
Steer axle type: Heavy-duty steer axle
Service brake type: Hydraulic, vacuum-boosted
Service brake actuation: Hydraulic with vacuum assist
Parking brake type: Mechanical, hand-operated
System voltage: 12V
Alternator type: Belt-driven
Starter motor: 12V
Frame construction: Robust chassis, all-welded
heavy-duty plate steel
Counterweight construction: Cast iron, extra-heavy lead-filled on STR models
Wheel configuration: 2x driven front / 2 rear
Number of wheels front: 2
Number of wheels rear: 2
Tire type: Cushion (solid)
Tyre dimensions front: 22 x 9 x 16
Tyre dimensions rear: 18 x 7 x 12.1
Tire type: Cushion tires providing floor protection
Steering type: Hydrostatic power steering
Steering control: Steering wheel with hydraulic control unit
Steering pump type: Gear pump, integral with hydraulic system
Hydraulic system type: Gear pump system
Maximum operating pressure for attachments: 200 bar (2,900 psi)
Oil flow for attachments: 95 L/min (25.1 GPM)
Hydraulic pump type: Gear pump
Lift cylinder type: Double-acting
Tilt cylinder type: Double-acting
Number of lift cylinders: 2
Number of tilt cylinders: 2
Mast type standard: Two-stage (2 stage)
Mast type available: Triplex (three-stage) available on some configurations
Mast construction: Rigid mast design with roller layout
Maximum lift height (specified mast): 3,050 mm (120 in)
Free lift (specified mast): 150 mm (5.9 in)
Mast height lowered: 2,120 mm (83.5 in)
Overall height with mast raised: 4,250 mm (167.3 in)
Mast tilt forward: 5 degrees
Mast tilt backward: 10 degrees
Fork carriage to DIN 15,173: 3A
Fork carriage width: 1,125 mm (44.3 in)
Forks thickness: 50 mm (2.0 in)
Forks width: 150 mm (5.9 in)
Forks length: 1,220 mm (48.0 in)
Rated load capacity: 4,000 kg (8,800 lb)
Load centre distance: 500 mm (19.7 in)
Load moment constant: 450 mm (17.7 in) axle to fork face
Lifting speed with load: 0.54 m/s (106 fpm)
Lifting speed without load: 0.57 m/s (112 fpm)
Lowering speed with load: 0.55 m/s (108 fpm)
Lowering speed without load: 0.50 m/s (98 fpm)
Rated drawbar pull with/without load: 23,780 N (5,346 lbf)
Gradeability with/without load: 33 percent
Dimensions
Overall length: 3,770 mm (148.4 in)
Length to fork face: 2,550 mm (100.4 in)
Overall length on STR model: 98 in (2,489 mm)
Overall width: 1,180 mm (46.5 in)
Overall width on STR model: 50 in (1,270 mm)
Wheelbase: 1,575 mm (62.0 in)
Track width front (centre of tyres): 940 mm (37.0 in)
Track width rear (centre of tyres): 980 mm (38.6 in)
Ground clearance under mast with load: 100 mm (3.9 in)
Ground clearance at centre of wheelbase with load (forks lowered): 150 mm (5.9
in)
Height with mast lowered: 2,120 mm (83.5 in)
Height to top of overhead guard: 2,205 mm (86.8 in)
Seat height: 1,200 mm (47.2 in)
Working aisle width with 1,000x1,200 mm pallets crosswise: 3,935 mm (155 in)
Working aisle width with 800x1,200 mm pallets crosswise: 3,735 mm (147 in)
Right angle stacking aisle: 108 in (2,743 mm)
Minimum outside turning radius: 2,285 mm (90.0 in)
Turning radius on STR model: 6.90 ft (2.10 m)
Weights
Operating weight: 12,280 lb (5,570 kg)
Operating weight on STR model: 12,470 lb (5,657 kg)
Axle loading with max load front (simplex mast, lowest lift height): 8,580 kg
(18,915 lb)
Axle loading with max load rear (simplex mast, lowest lift height): 990 kg
(2,182 lb)
Axle loading without load front (simplex mast, lowest lift height): 2,165 kg
(4,773 lb)
Axle loading without load rear (simplex mast, lowest lift height): 3,405 kg
(7,507 lb)
Engine oil change interval: 250 hours under normal
conditions
Transmission oil change interval: 1,000 hours
Hydraulic oil change interval: 2,000 hours
Coolant change interval: 2,000 hours or 2 years
Air filter element replacement interval: 500 hours or as indicated by
restriction indicator
Drive axle oil change interval: 1,000 hours
Steering system oil change interval: 1,000 hours
Valve lash adjustment interval: 500 hours
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