Main Control Valve for Komatsu PC35/40MR-2

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Product details

Main Control Valve for Komatsu PC35/40MR-2 / PC50/55MR-2

Product Overview

This hydraulic main control valve is a precision multi-way directional control valve designed to match Komatsu mini excavators PC35MR-2, PC40MR-2, PC50MR-2 and PC55MR-2. It serves as the core hydraulic distribution component of the machine.

The integrated valve assembly centrally distributes hydraulic oil flow to actuators including boom, arm, bucket, swing and travel motors. It integrates directional control, pressure relief, flow adjustment and overload protection functions.

Our product strictly follows original structure, installation dimensions, pipeline interfaces and control logic. It can be directly replaced on original equipment without modification, an ideal aftermarket replacement part for mini excavator maintenance.

Key Technical Specifications

- Applicable Models: Komatsu PC35MR-2, PC40MR-2, PC50MR-2, PC55MR-2 Mini Excavator

- Product Type: Integrated multi-way main control valve

- Working medium: Anti-wear hydraulic oil

- Normal operating pressure: Matches original factory standard

- Operating temperature: -20℃ ~ +85℃

- Control mode: Hydraulic pilot control

- Assembly interface, tubing connection dimensions consistent with OEM valve

- Built-in relief valve, anti-cavitation overload valve for each actuator circuit

Working Principle

The pilot valve outputs pilot pressure signals to push each spool inside the main control valve. The movement of the spool changes the oil passage connection, controlling the flow direction and flow rate to each hydraulic cylinder and travel/swing motor.

Built-in pressure regulating and overload valves maintain system working pressure and absorb impact loads during operation, preventing component damage caused by pressure spikes and realizing smooth and coordinated movement of all working devices of the excavator.

Core Advantages

1. Perfect fit for Komatsu PC35/40MR-2, PC50/55MR-2 mini excavators, direct plug-and-play replacement

2. Precisely machined valve spool and valve body, low internal leakage, stable control performance

3. Integrated multiple protection valves, effectively buffer impact pressure and extend service life of hydraulic components

4. Smooth operation, sensitive response, consistent operating feel same as original valve

5. Strict assembly and pressure testing before delivery to guarantee reliability under construction working conditions

6. Cost-effective alternative compared with original Komatsu spare parts, lowering equipment maintenance expenditure

7. Good resistance to oil contamination, suitable for outdoor construction environments

Typical Applications

Komatsu Mini Excavator

PC35MR-2

PC40MR-2

PC50MR-2

PC55MR-2

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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