195-30-66550 bogie Komatsu D375 bulldozer spare parts

The Komatsu D375 bogie 195-30-66550 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, thus improving construction safety and efficiency.
This product strictly adheres to Komatsu’s original standards and is based on the D375 series (474kW power, 72-ton operating weight) steering system specifications. It is constructed from Q355B high-strength steel plates, welded together with wear-resistant bushings and sealing components. It boasts 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.

Core technical parameters:

– Product Model: Komatsu D375 Bogie
-Part number 195-30-66550
– 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, and can withstand impact loads under complex working conditions.
– 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 580mm, total width 420mm, height 360mm, mounting hole spacing 280mm, mounting hole diameter 25mm, 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.

Komatsu D375 bogie 195-30-66550, 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, and improving construction safety and equipment steering flexibility.

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1 195-30-61311 track frame,l.h.
2 195-30-31220 bushing
3 195-50-22190 bushing
4 195-50-22210 bushing
5 195-30-61492 bracket
6 01010-81640 bolt
7 01643-31645 washer
8 195-30-31231 seal
9 195-30-31250 ring
10 195-30-31240 seal
11 195-30-25142 support
12 01010-62265 bolt
13 01643-32260 washer
14 01010-62285 bolt
15 01643-32260 washer
16 195-30-66550 bogie,(first)
17 198-30-56132 pad
18 195-30-66590 plate
19 01010-81230 bolt
20 01643-31232 washer
21 195-30-66531 pad
22 01010-81225 bolt
23 01643-31232 washer