FH45-1 Komatsu diesel forklift specs & dimensions (2019 - 2026)

Auto engine shutdown function

The engine shutdown function is equipped as standard. If the operator applies the parking brake, sets the directional lever in the neutral position and leaves the forklift truck without stopping the engine, the engine is automatically shutdown after a preset time. This feature contributes to prevent unnecessary fuel consumption caused by needless idling.

Neutral start function

The FH series engine is only permitted to start when the operator is in the seat, the directional lever is in the neutral position and the brake pedal is kept depressed. This function prevents sudden starting of the forklift truck.

No creeping

The FH series forklift trucks do not creep like conventional torque converter trucks even if the operator releases the brake pedal while the directional lever is in F or R position. This feature contributes to reduced risks in confined areas and when approaching to pick up a load.

Improved engine starting performance

The FH series forklift truck uses 24 volt electrical components to improve engine starting performance. Even in cold regions, you can depend on the FH series to deliver smooth, consistent starting performance.

New forklift trucks built upon Komatsu’s unique hydraulic and control technologies

The FH Series was designed to utilize highly reliable, field-proven Komatsu’s drive and control components that have been used for many years in Komatsu construction equipment. The travel system is “Electronically-controlled HST,” Komatsu’s unique hydraulic drive system that has been employed for Komatsu wheel loaders and bulldozers. The lift hydraulic system uses “Variable displacement pump with CLSS,” a high efficient hydraulic system employed in Komatsu hydraulic excavators. The FH Series models are powered by a Komatsu designed and manufactured diesel engine that features advanced engineering technologies. All these are combined to achieve superior fuel economy, reduced environmental load and outstanding controllability.

Superior fuel economy in high cycle operations

Komatsu’s “Electronically-controlled HST,” “Variable displacement pump with CLSS” and SAA4D95LE-5 diesel engine work in harmony to achieve significant fuel economy especially in high cycle operations where fast-paced loading, unloading, and directional changes are prevalent.

Travel system: Komatsu’s unique hydraulic drive system “Electronically-controlled HST”

The FH series employs electronically controlled hydraulic transmission, which replaces the torque converter and manual transmission found on conventional forklift trucks. The engine rotates the HST hydraulic pump, then supplies oil flow to the HST hydraulic motor and the motor drives the front wheels. Both the engine speed and the HST pump delivery are simultaneously electronically controlled to the optimum level for the situation, allowing you to achieve optimal performance while saving engine power and fuel.

Lift hydraulic system: “Variable displacement pump with CLSS”, a hydraulic system employed in Komatsu construction equipment

Komatsu’s CLSS hydraulic system has been utilized in their hydraulic excavators for many years. In this system, the load is sensed and the variable displacement pump supplies the least necessary oil flow to lift the load. Compared to the conventional fixed displacement gear pump, this system provides for much greater efficiency by minimizing hydraulic oil loss, making good use of engine power and reducing overall fuel consumption.

Variable engine output control function

The HST controller senses the weight of the load and automatically sends a signal to the engine ECM to control engine output, balancing necessary power and reducing fuel consumption.

Shock-free shifting

The HST drive system is a continuously variable speed transmission that provides smooth acceleration and stepless ratio changes, thus there is less shock and fewer worries for load shifting.

Controlled rolling back on a ramp

The HST drive system has a self-braking feature, which stops the hydraulic flow of fluid by releasing the accelerator pedal. This feature prevents uncontrolled rolling back and holds the truck on a ramp while the operator releases the brake pedal for a ramp-start.

High-quality and reliable Komatsu components

All of the FH series main components, such as the engine, hydraulic pumps, hydraulic motor, axles, and controllers, are designed, developed, and manufactured by Komatsu, ensuring the quality and reliability that comes from exacting Komatsu engineering standards.

Heavy-duty sealed wet disc brakes

The FH series forklift trucks are equipped with sealed wet disc brakes, whose performance is field-proven by Komatsu construction equipment. The sealed wet disc brakes provide protection from dust, dirt, and debris, offering superior durability, fade and water resistance, and maintaining constant and stable brake performance in high cycle operations.

Enhanced brake reliability

With Komatsu HST, reducing the oil flow amount to the hydraulic motor helps to decelerate the forklift truck. This feature eases the load on the brakes, thus enhancing the reliability of the brakes.

Travel speed limiter

Travel speeds can be set in 4 stages. This function is useful to reduce speeds in tight spaces or to keep the forklift within specific in-plant speed limitations.