Cat TH255 Specifications
The Caterpillar TH255 is a compact, highly maneuverable
telehandler engineered for construction, agricultural, landscaping, and
industrial tasks requiring strong lifting performance in tight spaces. Its
compact profile, hydrostatic drive, robust boom structure, and full-time
planetary axles make it capable of operating where larger telehandlers cannot.
With a rated capacity of 2500 kg (5500 lb), a
maximum lift height of 5600 mm (18 ft 4 in), and a forward reach of over
3.2 m (10 ft 11 in), the machine is designed for precise load placement,
pallet handling, tool-carrier versatility, and continuous-duty
operations. The TH255 balances power, visibility, serviceability, and
rugged construction, making it a reliable compact handler in the
Caterpillar lineup.
Technical Data
The TH255 is powered by the Cat C4.4 Stage IIIA DIT diesel engine.
Engine model: Cat C4.4
Gross power: 63 kW (84 hp)
Maximum torque: 353 Nm @ 1400 rpm
Displacement: 4.4 L
The 4.4-litre engine is designed for strong torque delivery at low RPM, ideal
for hydrostatic drivetrains requiring smooth, modulated power. Liquid cooling,
direct injection, and efficient turbocharging (if fitted) ensure stable
performance in demanding duty cycles. Engine components are positioned for quick
maintenance, including filters and the engine cooling package.
Transmission: Hydrostatic
Forward speed: Variable
Reverse speed: Variable
The hydrostatic transmission provides infinite speed control, smooth directional
shifts, and precise inching control. It eliminates gear shifting, allowing the
operator to maintain exact movement when approaching loads or performing boom
adjustments.
Axles
Type: Planetary reduction front and rear
Differential: High-bias limited slip on front axle
Planetary axles are designed for high durability, distributing load forces
throughout the hub reduction system. Limited-slip differential enhances traction
in mud, gravel, and uneven terrain.
Brakes
Service brakes: Inboard wet disc brakes on front axle
Parking brakes: Wet disc, spring-applied, hydraulic-release
Wet-disc brakes ensure long life, high reliability, and reduced maintenance in
dusty or debris-filled environments.
System voltage: 12V
Indicators: machine hours, fuel level, steer mode, steering pressure, battery
charge, coolant temperature, parking brake, engine pre-heat
Reverse motion alarm: Included
Illuminated switches and panel for night operation
Drive configuration: 4WD full-time
Tire options:
Standard: 12.00 x 16.5
Optional: 14.00 x 17.5
The chassis design provides a low center of gravity, structural strength, and
high maneuverability in rough environments. Reinforced steel frame construction
supports continuous lifting operations.
Steering type: Hydrostatic power steering
Modes: 2-wheel steer, crab steer, circle steer
Turning radius over tires: 3200 mm (126 in)
Pump type: Single-section gear pump
Maximum system pressure: 240 bar
Maximum pump flow: 85 L/min
Hydraulic system: 98 L
The auxiliary hydraulic circuit powers attachments requiring cylinders or
hydraulic motors. The boom’s hydraulic circuits use load-holding valves for
safety, while high-flow lines at the boom head support additional tool
attachments.
Boom cycle
times:
Boom up: 6.2 s
Boom down: 4.3 s
Tele in: 3.4 s
Tele out: 6.3 s
Bucket dump: 2.0 s
Bucket crowd: 2.4 s
Rated load capacity: 2500 kg (5500 lb)
Maximum lift height: 5600 mm (18 ft 4 in)
Maximum forward reach: 3250 mm (10 ft 8 in)
Capacity at maximum height: 1360 kg (3000 lb)
Capacity at maximum reach: 860 kg (1900 lb)
Top travel speed: 26 km/h
Drawbar pull (loaded): 38.7 kN
Overall width: approx. 1820-1920 mm
Overall height: approx. 2290 mm
Length to fork face: approx. 3660 mm
Ground clearance: approx. 279 mm
Fork sizes commonly used: 100 x 50 x 1200 mm (4 x 2 x 48 in)
Free-lift: dependent on carriage; approx. 300-400 mm.
Operating weight with carriage and forks: 4899 kg
250-Hour Service:
- Replace engine oil and filter
- Lubricate chassis and boom points
- Clean radiator/cooler pack
- Check battery and terminals
500-Hour Service:
- Replace hydraulic filter
- Inspect hydraulic hoses
- Check driveline and axle seals
1000-Hour Service:
- Replace transmission/hydraulic fluid
- Replace axle oil
- Inspect boom wear pads and adjust
- Verify hydraulic pressures
2000-Hour Service:
- Replace hydraulic oil
- Replace coolant
- Perform structural inspection of boom, frame, and mounts
- Conduct full steering and brake system inspection
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