High-Quality Replacement Driveline Parts by — PTC Drivelines
Unlike the engine-to-transmission joint, the front and rear spider positions on a Komatsu WA600-6R or WD600-6 see a more even, continuous load as the machine works — but that doesn't mean they wear any slower. The PTC 1031 Spider Assembly (OEM: KOMATSU 426-20-32620 / 56B-20-11910) is a direct drop-in replacement for these positions, built to match all OEM dimensions with no modification needed to fit.
This spider is used at both the front and rear universal joint positions on the WA600-6R/WD600-6 driveline, letting the propeller shaft flex as torque runs from the transmission out to the axles. It's a precision-machined alloy steel cross with four trunnion arms, each carrying a needle roller bearing cup that takes the full rotational load through every cycle. Because the same part covers two positions on the machine, keeping a spare on hand for scheduled service is common practice rather than waiting for a failure at either end to force a shutdown. We forge the PTC 1031 from high-grade alloy steel for stronger fatigue resistance than a cast equivalent, and every unit is checked against OEM drawings before dispatch. An inspection report is available on request.
Other driveline components from PTC Drivelines compatible with the Komatsu WA600-6 / WD600-6.
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.