Clark CGC50 Specifications
The Clark CGC50 is a mid-to-heavy capacity cushion-tire
internal-combustion forklift designed primarily for indoor industrial operations
requiring strong load-handling capability, excellent maneuverability, and high
operational durability.
With a nominal lifting capacity of
approximately 5,000 kg (11,000 lb), the CGC50 serves environments such
as steel fabrication centers, high-density warehouses, manufacturing
lines, heavy equipment production facilities, paper and packaging
industries, and distribution hubs requiring dependable movement of heavy
palletized or containerized loads.
The CGC50 features a welded steel chassis, powerful industrial LPG or
gasoline engine options, a heavy-duty powershift transmission,
reinforced mast assembly, and cushion tires optimized for smooth
concrete floors. Its design prioritizes reliability, low vibration,
strength, and simplified maintenance.
The operator compartment provides a wide
step-in area, ergonomic controls, clear visibility, and an effective
suspension seat. Technicians appreciate the easy-access engine bay,
simplified hydraulic routing, long-life filters, and robust drivetrain
components. The Clark CGC50 is engineered to deliver consistent and
economical performance in demanding indoor heavy-lifting applications.
The CGC50 is typically equipped with an industrial LPG
or gasoline engine offering strong torque for heavy loads and controlled
emissions for indoor use. Common engine families include the GM/PSI 4.3L V6
industrial engine, providing high-output torque and dependable performance.
GM/PSI 4.3L V6 LPG/Gasoline:
- Configuration: V6, 4-stroke
- Displacement: approx. 4.3 liters
- Power output: approx. 70-85 kW (94-114 hp)
- Torque output: approx. 220-280 Nm (162-207 lb-ft)
- Idle speed: approx. 650-750 rpm
- Rated speed: approx. 2,400-2,600 rpm
- Fuel system: LPG vapor-withdrawal with regulator/mixer or EFI gasoline
Mazda M4 Series (earlier models):
- Displacement: approx. 2.2-2.6 liters
- Output: approx. 40-55 kW (54-74 hp)
- Torque: approx. 120-170 Nm (89-125 lb-ft)
Engine Construction:
- Heavy cast-iron block
- Cast-iron or aluminum head
- Forged-steel crankshaft supported by multiple main bearings
- Heat-treated aluminum pistons with reinforced crowns
- Mechanical valvetrain designed for long service life
Fuel System:
- LPG vaporizer/regulator
- Mixer or fuel-injection system depending on year
- Multi-stage filtration
- Pressure-rated industrial LPG lines
- Automated fuel shutoff
Lubrication System:
- Full-pressure wet-sump
- Gear-type crankshaft-driven oil pump
- Oil capacity: approx. 4.0-6.0 L (4.2-6.3 qt)
- Typical oil pressure: approx. 250-400 kPa (36-58 psi)
- Recommended oil: SAE 10W-30 or 15W-40
- Replaceable spin-on oil filter
Cooling System:
- Liquid cooling with centrifugal water pump
- Coolant capacity: approx. 10-12 L (10.5-12.7 qt)
- Thermostat: opens approx. 82°C (180°F)
- Pressurized radiator with heavy-duty airflow shroud
- System pressure: approx. 13 psi (90 kPa)
The CGC50 uses a high-capacity powershift transmission
tailored for heavy warehouse loads.
Transmission:
- Type: torque-converter powershift
- Gears: forward and reverse
- Forward speed (unladen): approx. 15-18 km/h (9-11 mph)
- Reverse speed: approx. 12-15 km/h (7-9 mph)
- Fluid capacity: approx. 10-14 L (10.5-14.8 qt)
- Fluid type: Dexron III ATF
- Direction control: steering-column lever with hydraulic clutch packs
Drive Axle:
- Cast-steel industrial differential
- Planetary reduction hubs for torque multiplication
- Axle oil capacity: approx. 8-10 L (8.4-10.5 qt)
- Recommended lubricant: SAE 80W-90 or 85W-140
Brake System:
- Service brakes: hydraulic drums or optional wet-disc depending on
configuration
- Parking brake: mechanical lever-applied drum brake
- Indoor-tuned braking for smooth deceleration
- System voltage: 12 V
- Battery capacity: approx. 70-100 Ah
- Alternator output: approx. 40-80 A
- Starter motor: approx. 1.8-2.5 kW
- Electrical harness: heat-resistant industrial wiring
- Safety switches: operator-presence, neutral-start, seat sensor
- Lighting: headlights, rear lamps, optional overhead warehouse lamps
Drive
Configuration:
- Drive wheels: front
- Steering wheels: rear
- Drive system: 2WD for indoor usage
Tires (Cushion):
- Front tires: approx. 28x9x20
- Rear tires: approx. 22x7x16
Optional Tires:
- Non-marking cushion tires
- High-temperature compounds
- Low-profile space-saving cushion tires
Chassis Structure:
- Fully welded heavy-steel frame
- Reinforced mast mounting bases
- Integrated counterweight for optimal stability
- Protected hydraulic and electrical lines beneath shielding panels
Steering:
- Type: fully hydrostatic power steering
- Steering pump flow: approx. 10-15 L/min (2.6-4.0 gpm)
- Rear axle: oscillating with heavy-duty pivot bearings
- Turning radius: approx. 2.2-2.5 m (87-98 in)
- Steering tuned for smooth concrete floors and tight indoor aisles
- Max hydraulic pressure: approx. 2,200-2,500 psi
(152-172 bar)
- Pump type: engine-driven external gear pump
- Flow rate: approx. 40-60 L/min (10-16 gpm)
- Reservoir capacity: approx. 35-45 L (37-47 qt)
- Fluid grade: ISO VG 32 or VG 46
- Lift cylinders: heavy double-acting cylinders
- Tilt cylinders: dual tilt cylinders with cushioning
- Auxiliary circuits: sideshift or clamp (optional)
| Service Refill Capacities |
- Engine oil: approx. 4.0-6.0 L (4.2-6.3 qt)
- Cooling system: approx. 10-12 L (10.5-12.7 qt)
- Transmission: approx. 10-14 L (10.5-14.8 qt)
- Drive axle: approx. 8-10 L (8.4-10.5 qt)
- Hydraulic oil: approx. 35-45 L (37-47 qt)
Mast Types:
- V (2-stage)
- FV (3-stage full free-lift)
Lift Height Options:
- Duplex: approx. 3.0-4.0 m (118-157 in)
- Triplex: approx. 4.5-6.0 m (177-236 in)
Free Lift:
- 0.2-1.0 m (8-39 in)
Fork Specifications:
- Standard lengths: 1,067-1,219 mm (42-48 in)
- Optional: up to 1,524 mm (60 in)
- Width: approx. 125-150 mm (5-6 in)
- Thickness: approx. 45-60 mm (1.8-2.4 in)
- Rated capacity: 5,000 kg (11,000 lb) at 600 mm (24
in) load center
De-rating affected by:
- Mast height
- Long forks
- Attachments
- Off-center loading
- Uneven or inclined surfaces
- Lift speed (unladen): approx. 0.40-0.55 m/s (80-110
ft/min)
- Lift speed (laden): approx. 0.25-0.35 m/s (50-70 ft/min)
- Lowering speed (unladen): approx. 90-130 ft/min
- Lowering speed (laden): approx. 110-150 ft/min
- Travel speed (unladen): approx. 15-18 km/h (9-11 mph)
- Travel speed (laden): approx. 12-14 km/h (7-9 mph)
- Gradeability (unladen): approx. 20-26%
- Gradeability (laden): approx. 10-14%
- Drawbar pull: approx. 12,000-20,000 N (2,698-4,496 lbf)
- Overall length to fork face: approx. 2.7-3.0 m
(106-118 in)
- Overall width: approx. 1.3-1.5 m (51-59 in)
- Overhead guard height: approx. 2.2-2.3 m (87-91 in)
- Wheelbase: approx. 1.7-1.9 m (67-75 in)
- Ground clearance: approx. 90-120 мм (3.5-4.7 in)
- Turning radius: approx. 2.2-2.5 m (87-98 in)
- Aisle width (1000x1200 pallet): approx. 3.8-4.2 m (149-165 in)
- Maximum fork height: 3.0-6.0 m depending on mast
- Free lift: 0.2-1.0 m
- Fork lengths: 42-60 in
- Operating weight: approx. 4,500-6,000 kg (9,920-13,228 lb)
- Counterweight mass: approx. 1,800-2,800 kg (3,968-6,173 lb)
250-Hour
Maintenance:
- Replace engine oil and filter
- Lubricate mast pivots and steering joints
- Clean air filter
- Clean radiator
- Inspect battery terminals
500-Hour Maintenance:
- Replace fuel filter
- Inspect driveline and shaft couplings
- Check brake shoes and drums
- Examine axle seals and bearings
1,000-Hour Maintenance:
- Replace transmission fluid
- Replace axle lubricant
- Inspect hydraulic cylinders and lines
- Check chain stretch and mast alignment
2,000-Hour Maintenance:
- Replace hydraulic oil
- Replace coolant
- Full mast structural inspection
- Test operator-presence and neutral-start circuits
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