High-Quality Replacement Driveline Parts by — PTC Drivelines
Owners running the older WA600-3R often assume parts availability dries up as a machine ages, but the driveline components on these loaders are still commonly serviced today. The PTC 1032 Spider Assembly (OEM: KOMATSU 426-20-12620) is manufactured to the same specification as the original, so it drops into the WA600-3R's universal joint without any rework or custom fitting.
Sitting inside the propeller shaft's universal joint, this spider is what lets the driveline flex as torque moves from the transmission out toward the axle. The design is a forged alloy steel cross with four trunnion arms, each fitted with a needle roller bearing cup to carry the rotating load. On a machine like the WA600-3R that has typically been in service for years, this joint has usually been through several duty cycles already so play or a knock at the joint is often just ordinary wear catching up, not a sign of anything unusual.
Every PTC 1032 is forged rather than cast, giving it better resistance to the shock loading that builds up over a long service life. 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 GD605.
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.
If the required part number is not listed in our product range, simply share the part number, drawing, dimensions, or technical specifications with us. Our team can review your requirement and manufacture the part to your preferred specifications.