195-40-00800 Steering valve assembly Komatsu D375 bulldozer spare parts

The Komatsu D375 steering valve assembly 195-40-00800 is the “steering control core” of the chassis steering system. It controls the on/off state and flow direction of hydraulic oil by adjusting the movement of the valve core, drives the steering mechanism, accurately transmits steering commands, and buffers hydraulic shocks under harsh working conditions. It is specially designed for the steering system of Komatsu D375A-2/A-5/A-6/A-8 models, and can avoid steering failure and deviation caused by valve leakage and jamming, thus improving construction safety and efficiency.
This product strictly adheres to Komatsu’s original standards and references the D375 series (474kW power, 72-ton operating weight) steering system specifications. It utilizes a ductile iron valve body and a precision stainless steel valve core, coupled with fluororubber sealing components, offering advantages such as precise steering control, stable pressure resistance, impact resistance, excellent sealing, and convenient installation. Through precision machining and aging heat treatment, the valve core achieves high grinding precision and extremely low leakage rate, allowing for direct installation. This effectively reduces downtime losses, extends the steering system’s lifespan, and lowers maintenance costs. Widely used in mining, earthmoving, and infrastructure fields, it is a core component for steering system maintenance.

Core technical parameters:

– Product Model: Komatsu D375 Steering Valve Assembly, Part Number 195-40-00800
– Product Type: Steering Valve Assembly, Core Component of Hydraulic Control System for Chassis Steering System
– Core materials: Valve body is made of QT450-10 ductile iron; valve core is made of 304 stainless steel; seals are made of fluororubber (FKM).
– Material characteristics: Ductile iron with tensile strength ≥450MPa and hardness ≥160HBS; valve core roughness Ra≤0.2μm; fluororubber with resistance to -25℃~+120℃ and compression set recovery rate ≥85%.
– Operating parameters: Rated pressure 31.5MPa, maximum 35MPa, rated flow 70L/min, operating temperature -40℃~120℃, IP67 seal, suitable for the steering requirements of 72-ton models.
– Processing technology: precision machining + aging heat treatment, precision grinding of valve core, flaw detection, dimensional and sealing tests, conforming to GB/T 13852-2018 hydraulic valve manufacturing standard.
– Core dimensions: Valve body total length 260mm, single-port width 42mm, mounting hole spacing 110mm, interface specification G3/4 internal thread, precisely matching the steering system mounting position.
– Compatible models: Komatsu D375 series (D375A-2/A-5/A-6/A-8, etc.), can directly replace original parts, compatible with 474kW models.
– Quality standards: 100% pass rate, 6-12 month warranty, support for bulk purchases and spot supply.

The Komatsu D375 steering valve assembly 195-40-00800, with its original factory compatibility and excellent steering performance, has become the preferred consumable for maintaining the D375 series steering system, suitable for various needs of individuals, enterprises, and maintenance personnel. It is easy to install, can be directly replaced, and effectively solves problems such as valve leakage, jamming, and steering failure, reducing downtime, lowering costs, and improving construction safety.

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