High-Quality Replacement Driveline Parts by — PTC Drivelines
If you are running a Komatsu WA500-3 wheel loader and you notice play in the driveline, the spider is likely worn out. The PTC 1028 Spider Assembly (OEM: KOMATSU 425-20-11620) is built as a straight, drop-in replacement for the front universal joint spider on the WA500-3. Every dimension matches the original, so there's no cutting, grinding or reworking needed to get it installed.
This part sits at the heart of the front propeller shaft's universal joint, carrying torque from the transmission through to the front axle. It's a forged cross with four trunnion arms, each one carrying a needle roller bearing that allows the joint to flex as the machine works. Like any spider, it wears with use — vibration, clunking on direction changes or visible play in the joint are the usual signs it's time to swap it out.
Other driveline components from PTC Drivelines compatible with the Komatsu WA500-3.
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.
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.