Piston & Pin (.50MM) for Forklift

Frequently Asked Questions

Q: What forklift models use the 91-825 piston and pin assembly?
A: The 91-825 piston and pin (.50mm) fits Toyota, Mitsubishi, Linde, and BT forklifts with compatible hydraulic cylinders. Match your equipment model and cylinder bore size before ordering.

Q: What is the pressure rating for the 91-825 piston and pin?
A: The 91-825 is rated for standard forklift hydraulic systems typically operating at 150-210 bar. Confirm your system pressure matches the piston design specifications to prevent seal damage or leakage.

Q: How does the 91-825 compare to similar piston and pin assemblies?
A: The 91-825 has a .50mm bore profile common in tilt and load cylinders. Cross-reference your OEM part number to ensure the 91-825 matches pressure rating and sealing configuration. Different manufacturers use different piston designs for the same bore size.

Q: What causes premature wear on the 91-825 piston and pin?
A: Contaminated hydraulic fluid, debris particles, low fluid levels, and metal-to-metal contact between piston and cylinder bore cause rapid wear. Maintain fluid cleanliness, monitor seal condition, and replace fluid at recommended intervals.

Q: How often should the 91-825 piston and pin be replaced?
A: Replacement interval depends on operating hours and fluid condition. Pistons typically need replacement every 3-5 years or after 4000-6000 operating hours. Replace immediately if the cylinder leaks, does not hold load, or operates sluggishly.