Product Description
Piston & pin (.50mm)
Frequently Asked Questions
Q: Which forklift brands is the 91-F217 piston and pin compatible with?
A: The 91-F217 piston and pin (.50mm) is compatible with Crown, Raymond, Yale, Hyster, and similar counterbalance and load cylinders. Verify your cylinder series and pressure rating match before ordering.
Q: What is the bore and rod diameter for the 91-F217?
A: The 91-F217 features a .50mm piston bore. Confirm your cylinder internal dimensions and pin diameter specifications match. Undersized or oversized pistons will not seal properly and cause leakage.
Q: What seals are used with the 91-F217 piston and pin?
A: Piston seals are typically elastomer (rubber) or polyurethane compounds. Seals must be replaced each time the piston is serviced. Use OEM or equivalent seal kits designed for the 91-F217 bore and operating pressure.
Q: Can the 91-F217 piston be used in both extend and retract positions?
A: Yes, the piston rod is supported on both sides. The 91-F217 functions in double-acting cylinders for mast tilt, load, and auxiliary functions. Confirm pressure ratings are balanced for both directional flow.
Q: What signs indicate the 91-F217 piston needs replacement?
A: Replace if you observe cylinder leakage, sluggish movement, noise during operation, or inability to hold load. Visual inspection may reveal scoring or rust on the piston rod surface. Any of these conditions means the piston seals have failed.
Q: How do I verify the 91-F217 is the correct part for my equipment?
A: Cross-reference your OEM cylinder model number and pressure rating with the 91-F217 specifications. Match bore diameter, rod size, and seal type. Contact us with your cylinder part number for direct confirmation.