195-30-64212 spring Komatsu D375 bulldozer spare parts

The Komatsu D375 spring 195-30-64212 is the “shock absorption core” of the chassis buffer system. It absorbs ground impacts and component vibrations under harsh working conditions such as mining and infrastructure through its own elastic deformation, balancing the force on the equipment. It is specially designed for the chassis buffer parts of Komatsu D375A-2/A-5/A-6/A-8 models, which can avoid the aggravation of equipment vibration and component loosening caused by spring fatigue, breakage, and elasticity decay, ensuring normal equipment operation, improving construction efficiency, and adapting to the harsh use requirements of mining and large earthmoving projects. It fits the product positioning of Komatsu D375 series bulldozers (474kW power, 72-ton working weight) for high-efficiency operation.
This product strictly adheres to Komatsu’s original standards and is based on the D375 series (474kW power, 72-ton operating weight) chassis buffer system specifications. It is made of high-quality 65Mn spring steel with a rust-proof surface treatment, offering advantages such as strong elasticity, fatigue resistance, wear resistance, and easy installation. Precision rolling and tempering ensures accurate dimensions and stable elasticity, allowing for direct installation. This effectively reduces downtime losses, extends the lifespan of the chassis buffer system, and lowers maintenance costs. Widely used in mining, earthmoving, and infrastructure fields, it is a core component for buffer system maintenance, perfectly aligning with the efficient and durable product positioning of the Komatsu D375 series bulldozers.

Core technical parameters:

– Product Model: Komatsu D375 Spring
-Part Number: 195-30-64212
– Product Type: Springs, core components for shock absorption in chassis cushioning systems
– Core Material: The main body is made of high-quality 65Mn spring steel; the surface is treated with galvanized rust prevention.
– Material characteristics: 65Mn spring steel has a tensile strength of ≥1000MPa, a yield strength of ≥800MPa, and a hardness of ≥280HBS; its elastic deformation recovery rate is ≥98%, and it has excellent fatigue resistance, capable of withstanding more than one million cycles of reciprocating deformation; the galvanized layer has strong corrosion resistance and is not easy to peel off, making it suitable for harsh outdoor working conditions.
– Operating parameters: Rated elastic load ≥ 50kN, maximum deformation ≤ 80mm, operating temperature -40℃~120℃, suitable for the chassis buffer requirements of 72-ton models, can withstand impact loads under complex working conditions, and suitable for heavy-duty mining operations.
– Processing technology: precision rolling + tempering treatment + surface galvanizing, elasticity test and dimensional calibration, conforming to GB/T 1239.2-2009 Engineering Machinery Spring Manufacturing Standard.
– Core dimensions: Spring outer diameter 60mm, inner diameter 35mm, total length 220mm, wire diameter 8mm, effective number of coils 12, precisely matching the chassis buffer 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 spring 195-30-64212, with its original factory compatibility and excellent elastic damping performance, has become the preferred consumable for maintaining the D375 series chassis damping system, suitable for various needs of individuals, enterprises, and maintenance. It is easy to install, can be directly replaced, and effectively solves problems such as spring fatigue, breakage, and elasticity decay, reducing downtime, lowering costs, improving construction safety and equipment operational stability, and facilitating efficient operations in mines and large-scale earthmoving projects.

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