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Caterpillar Bulldozer Track Roller D8K/D8H

Bulldozer Parts

Caterpillar Bulldozer Track Roller D8K/D8H

TACK is an engineering machinery factory with over 20 years of experience. Our main products are undercarriage parts for bulldozers, excavators, and agricultural harvesters etc. Our products, including track rollers , carrier rollers , idlers, sprockets, and track chains, have been highly praised overseas. We support machinery brands such as CATERPILLER, LIEBHERR, KOMATSU, JOHN DEERE, CASE, KOBELCO, SUMITOMO, VOLVO, HITACHI, HYUNDAI, etc. We are a direct manufacturing factory with quality assurance, fast delivery, a wide range of product types, and the convenience of one-stop shopping. We have dedicated designers who can provide precise and personalized services, quickly develop samples according to customer request , and our factory processes are organized and flexible to adjust production as customers required.

Acceptance: OEM/ODM, Trade, Wholesale, Regional Agency. 

Payment: T/T, L/C, X-transfer


    Track rollers are designed to transfer, through the tracks and onto the ground, the majority of the excavator's weight and dynamic forces. The track rollers also increase excavators stability.

    A thorough study of the original drawing, presenting the OEMs (Original Equipment Manufacturers) performance requirements, will allow us to manufacture all the different types of conveyor rollers available on the market. The best solution will be applied to our production line after rigorous analysis of the drawings.

    Our products are made of 45Mn to 50Mn steel, which will go through a high frequency induction modulation process in order to obtain HRC50-55. This material, chosen for its quality and durability, meeting the requirements of heavier weights as well as the precision of our production lines, are the main competitiveness of our bottom rollers. All track roller shells are assembled with O-rings, bushings, seals, shaft and other small parts. Each step is strictly inspected to ensure pressure resistance and tensile resistance.



    Original Code

    D8K SF: 6P4897,7S9041,9H6449,9P3308,CR2798,10T0136AY2
    D8K DF: 6P4898,7S9042,9H6451,9P3309,CR2787,10T0137AY2


    Caterpillar Bulldozer Track Roller D8K/D8H  

    Model No. D8K, D8H  D8K, D8H 
    Type Single Flange Double Flange
    OEM  NO. 6P4897 6P4898
    Material 50Mn 50Mn
    Technique Forging Forging
    Mounting Distance 428.6*133.35*Ø27 428.6*133.35*Ø27
    Weight 107.5KGS 121.5KGS
    Surface Hardness



    Hardness Deepth 8-12mm 8-12mm

    Welding Operation

    by ARC CO² welding by ARC CO² welding
    Machining Operation CNC machine CNC machine
    Colors Yellow or Black Yellow or Black