Product Description
Spiral pin
Frequently Asked Questions
Q: What is the function of a spiral pin like the SY81256 in material handling equipment?
A: Spiral pins secure rotating or moving components on axles and shafts. The spiral slot design allows radial compression during insertion while preventing axial movement once installed. This pin type is used in wheel hubs, caster swivels, and steering linkage assemblies across fork lifts and pallet jacks.
Q: Which fork lift and pallet jack brands use the SY81256 spiral pin?
A: The SY81256 is compatible with fork lift and material handling equipment from Crown, Toyota, Raymond, Yale, Hyster, Clark, and Mitsubishi. Verify your specific equipment model and assembly location to confirm this pin size is correct before ordering.
Q: What material is the SY81256 spiral pin made from?
A: Standard construction is hardened alloy steel with precision diameter and spiral slot design. Material hardness resists wear and maintains secure retention under dynamic loading. Do not use soft steel or mild steel substitutes as these fail prematurely under rotational stress.
Q: What symptoms indicate the SY81256 spiral pin needs replacement?
A: Replace the pin if the wheel or component rotates independently on the axle, if the pin is bent or sheared, or if you observe lateral movement or rocking that indicates loss of axial retention. A failed pin compromises steering control and wheel stability.
Q: Are there different sizes of spiral pins for different equipment models?
A: Spiral pin diameter, length, and slot pitch vary by equipment model and assembly location. The SY81256 is sized for specific applications. Do not substitute different spiral pin sizes or brands as this results in improper retention and potential component failure. Verify model compatibility before ordering.