Hyundai R300 Excavator Undercarriage Parts Track Chain Link Carrier Roller

This high-strength mining grade hydraulic excavator has a chassis core with four wheels and spare parts components, specially designed for Hyundai's classic heavy-duty excavator chassis walking system. The product comprehensively covers and accurately applies core load-bearing transmission units such as Track Chain Link and Carrier Roller. This high-end original grade component, as a pure boutique spare part in the aftermarket, is precisely suitable for fully restoring the 30 ton industry's absolute main star models such as the Hyundai R300LC-7 and R300LC-9S. The product is based on first principles and is made of high-quality manganese boron alloy steel through integral forging. It undergoes fully automatic deep heat treatment quenching, and has an ultra-high hardness wear-resistant layer on the surface, perfectly resisting the extreme alternating shear stress of mines. Taking the standard sprocket as an example, the physical dimensions of the packaging are approximately 240mm × 210mm × 210mm, and the overall net weight of a single unit is about 26.5kg (the chain rail assembly and other components are adjusted according to the specifications of the number of sections).

"Extreme cleaning and benchmark verification (core pit avoidance): Before assembling the sprocket wheel, it is necessary to use a wire brush to thoroughly scrape off the sediment and rust on the installation benchmark surface of the track frame to ensure that the surface is physically flat. If there are micrometer sized foreign objects remaining on the installation surface, it will cause the axis of the sprocket to deviate after tightening, leading to unilateral force deformation and sudden lightning oil leakage during later operation.

High strength bolt torque locking: When replacing the sprocket, it is necessary to use brand new original 12.9 grade high-strength fastening bolts (it is strictly prohibited to reuse old parts). High precision torque wrenches must be used, strictly following the original factory's rated torque specifications for cross cross and staged uniform locking, and applying a small amount of anti loosening glue to the threads to prevent bolt loosening due to severe physical vibration."