195-30-66520 bogie Komatsu D375 bulldozer spare parts

The Komatsu D375 bogie 195-30-66520 is the “load-bearing steering core” of the chassis steering system. By precisely connecting the frame and tracks, it transmits the weight of the machine and the power of operation, and works with the steering mechanism to achieve flexible steering. It also buffers the ground impact under harsh working conditions such as mining and infrastructure construction. It is specially designed for the steering system of Komatsu D375A-2/A-5/A-6/A-8 models, and can avoid steering jamming and track deviation caused by bogie deformation and cracking, ensuring normal operation of the equipment, improving construction efficiency, and adapting to the harsh use requirements of mining and large-scale earthwork projects.
This product strictly adheres to Komatsu’s original standards and is based on the steering system specifications of the D375 series (474kW power, 72-ton operating weight). It is welded from Q355B high-strength steel plates and equipped with wear-resistant bushings and sealing components, offering advantages such as high load-bearing capacity, impact resistance, wear resistance, flexible steering, and convenient installation. Through precision welding and aging treatment, the welds are full and defect-free, resulting in high structural strength. It can be directly installed, effectively reducing downtime losses, extending the steering system’s lifespan, and lowering maintenance costs. Widely used in mining, earthmoving, and infrastructure fields, it is a core component for steering system maintenance, perfectly aligning with the efficient and durable product positioning of the Komatsu D375 series bulldozers.

Core technical parameters:

– Product Model: Komatsu D375 Bogie
-Part number 195-30-66520
– Product Type: Bogie, a core component of the chassis steering system that supports steering.
– Core materials: The main body is made of Q355B high-strength steel plate; the matching wear-resistant bushing is made of 45# steel; the seals are made of fluororubber (FKM).
– Material characteristics: Q355B steel plate has a tensile strength ≥355MPa, yield strength ≥235MPa, and hardness ≥130HBS; the wear-resistant bushing has a surface hardness of HRC45-50 and excellent wear resistance; the fluororubber is resistant to -25℃~+120℃ and has stable sealing performance.
– Operating parameters: Rated load capacity ≥ 80 tons, allowable steering angle ≤ 45°, operating temperature -40℃~120℃, IP67 sealing, suitable for the steering load requirements of 72-ton models, can withstand impact loads under complex working conditions, and suitable for heavy-duty mining operations.
– Processing technology: precision cutting + robotic welding + aging treatment, welds are inspected for flaws, and the whole is treated with rust prevention, which meets the GB/T 3098.1-2010 standard for manufacturing structural parts of engineering machinery.
– Core dimensions: Total length 570mm, total width 410mm, height 350mm, mounting hole spacing 270mm, mounting hole diameter 24mm, 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, suitable for use in mines and large-scale earthwork projects.

Komatsu D375 bogie 195-30-66520, with its original factory compatibility and excellent load-bearing and 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 bogie deformation, cracking, and wear, reducing downtime, lowering costs, improving construction safety and equipment steering flexibility, and facilitating efficient operations in mines and large-scale earthmoving projects.

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