Spare parts ► PVH3B35 PCR-1B-05A PHV series Nachi Hydraulic parts

Nachi PHV-3B-35 hydraulic motors and Nachi PCR-1B-05A are two motors with different purposes and designs that are often used on the same mini excavator.
Motor Nachi PHV-3B-35 – this is the travel motor (Travel Motor), which is responsible for the movement of the tracks
Motor Nachi PCR-1B-05A – this is the swing motor, which is responsible for rotating the platform (tower) of the excavator.
Below are the specifications for each motor separately.
Nachi PHV-3B-35 hydraulic motor — is an integrated final drive consisting of a two-speed axial piston hydraulic motor and a planetary gearbox. Its main task is to convert hydraulic pressure into high torque for driving the tracks. This unit provides both powerful traction for work and the ability to move the machine quickly.
Technical characteristics of the Nachi PHV-3B-35 hydraulic motor:
- Type: travel motor (Travel Motor / Final Drive)
- Design: axial piston motor with built-in planetary gearbox and automatic parking brake
- Displacement (engine): ~35 cm3/rev
- Maximum working pressure: up to 26.0 MPa (265 kgf/cm2)
- Maximum torque (output): ~ 4100 Nm
- Rotation speed: two-speed mode (Low / High Speed)
- Weight: approximately 40-45 kg
- Application: track drive on mini excavators weighing 3–4 tons
Nachi PCR-1B-05A hydraulic motor - a compact axial piston motor designed specifically for platform slewing systems. It combines a hydraulic motor, gearbox and safety valve block, ensuring smooth start-up and effective braking. Its design is optimized for precise and safe positioning of the upper part of the excavator.
Technical characteristics of the Nachi PCR-1B-05A hydraulic motor:
- Type: platform rotation motor (Swing Motor)
- Design: axial piston motor with built-in gearbox and brake mechanism
- Displacement (engine): ~18 cm3/rev (modification may vary)
- Working pressure: up to 20.6 MPa (210 kgf/cm2)
- Torque: designed for the rotation of the excavator platform of the corresponding class
- Rotation speed: depends on the gear ratio of the gearbox
- Weight: approximately 35-40 kg
- Application: rotation of the tower (platform) on mini excavators weighing 3–4 tons.
Analogues of the hydraulic motor catalog number:
Installed in the equipment model: YuChai YC35-6
The company "Aspect Plus" offers a wide range of spare parts for the repair of the Nachi PVH3B35 PCR-1B-05A hydraulic motor.