High-Quality Replacement Driveline Parts by — PTC Drivelines
The rear universal joint on a Komatsu HD465-7R mining dump truck works under a different load pattern than the front, absorbing torque after it's already passed through the front joint and driveshaft. The PTC 1011 Spider Assembly (OEM: KOMATSU 428-20-12620 / 569-20-79210) is machined to match the original in every dimension, giving the HD465-7R a direct replacement that fits without any modification to the truck.
This spider sits inside the rear propeller shaft's universal joint, letting the driveline flex as torque runs back toward the rear axle. It's a forged alloy steel cross with four trunnion arms, each fitted with a needle roller bearing cup that takes the rotational load through every cycle. On a haul truck like the HD465-7R, the rear joint typically sees steady, heavy loading rather than sharp shock loading, so wear here tends to build up gradually — a slow increase in play or a low-level vibration rather than a sudden knock.
Every PTC 1011 is forged rather than cast, giving it stronger fatigue resistance for the sustained loads this position sees in mining duty. Units are checked against OEM drawings before dispatch, and an inspection report is available on request.
Other driveline components from PTC Drivelines compatible with the Komatsu WA600-3.
Whether you need OEM-compatible spare parts for your mining fleet, a reliable export supply partner, or want to become a regional distributor — our team is ready to help within 24 hours.
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