أسطوانة حاملة Hitachi 9054889,9062364 لـ رافعة مجنزرة Hitachi KH300 , KH300-3

TopTrack is a Chinese manufacturer specializing in the production of undercarriage parts for crawler cranes. We boast extensive export experience for crawler‑crane undercarriage parts, with our products successfully exported to more than 30 countries and regions worldwide.

We offer a complete product range, supplying full‑range crawler‑crane undercarriage parts including track shoes, track rollers, top rollers, idlers and drive sprockets. Our product coverage extends to 97% of global crawler‑crane brands and models. Custom‑made solutions are also available upon customer request.

All our crawler‑crane undercarriage parts fully comply with OEM standards. Customers can install them directly upon receipt without any modification, which greatly saves time for parts replacement.

Strict inspections are implemented at every stage, from raw‑material selection to final packing and shipment. High‑quality alloy steel is adopted for forging or casting. Each product undergoes dual heat‑treatment processes including quenching and tempering to achieve favourable impact resistance and hardness. Surface quenching is further applied to enhance wear resistance.

Multiple quality‑control procedures are carried out throughout production, such as hardness testing, magnetic particle inspection, dimension measurement, ultrasonic testing and tensile testing. Relevant inspection reports, photos or video materials can be provided according to customers’ requirements.