Excavator Dressta TD15 Undercarriage Parts Drive Sprocket

This high-strength heavy-duty track type bulldozer/excavator chassis has four wheels with core drive wheels (Drive Sprocket/Segment), specially designed for the classic heavy-duty track system of Dressta. This core power transmission unit is precisely suitable for fully restoring the dismounting walking system of top 20 ton industry bulldozers/excavators such as Dressta TD15, TD15C, TD15E, and TD15M. The product is based on first principles and adopts high-quality high hardness manganese boron alloy steel for precise forging. The tooth surface is subjected to fully automatic computer-controlled deep intermediate frequency quenching heat treatment, which gives it the ultimate hardening layer depth and impact toughness physical matrix, perfectly and seamlessly resisting the instantaneous alternating shear stress and meshing wear under high-frequency walking conditions. The physical dimensions of the product packaging are approximately 560mm × 560mm × 85mm, and the overall net weight of a single unit is about 42.5kg (some segmented gear rings correspond to the original factory specifications).

"Extreme cleaning and benchmark verification (core pit avoidance): Before assembly, it is necessary to use a wire brush and high-pressure cleaning agent to thoroughly scrape off the sediment and residue on the installation surface and threaded holes of the final drive wheel hub, ensuring that the surface is physically flat. If there are micrometer sized foreign objects remaining on the reference surface, it will directly cause the axis of the driving wheel to deviate, leading to shear stress concentration and bolt lightning fracture during operation.

Double directional torque locking of high-strength bolts: It is necessary to replace the original 12.9 grade high-strength fastening bolts and large washers with rigid matching (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 locking, evenly locking in 3-4 stages, and applying special medium high strength thread locking adhesive to the threads."