Product Description
SPRING
Frequently Asked Questions
Q: What is the UL 1406 spring used for in manual pallet jacks?
A: The UL 1406 is a tension or load spring that maintains force in the scissor lift mechanism. It helps return the lifting arms to the lowered position and provides consistent pressure during the lowering cycle. This part is compatible with most standard scissor-type manual pallet jacks from Crown, Toyota, Raymond, and Hyster equipment families.
Q: What material and spring rate specifications does the UL 1406 have?
A: The UL 1406 is a compression or extension spring manufactured from alloy steel with a specific spring constant rated for typical manual jack loads between 2500 and 5500 pounds. The exact spring rate (measured in pounds per inch) must match the original equipment to ensure proper lowering control and arm return behavior.
Q: How long does the UL 1406 spring remain effective?
A: Springs can remain functional for 3 to 5 years with typical usage. However, springs degrade faster than other components if exposed to extreme temperatures, aggressive lowering cycles, or overloading. Loss of spring force causes sluggish arm return and incomplete lowering.
Q: What indicates the UL 1406 spring needs replacement?
A: Replace the UL 1406 spring if the arms do not return quickly to the lowered position, if manual lowering feels abnormally slow or uncontrolled, or if the spring is visibly bent, cracked, or permanently deformed. Loss of spring tension directly affects equipment safety and control.
Q: Can the UL 1406 spring be used across different manual pallet jack brands?
A: Spring compatibility is limited to equipment with matching load ratings and scissor mechanism designs. Do not substitute springs from different manufacturers or load classes, as incorrect spring rates will impair equipment function. Verify the spring constant and mounting dimensions match your specific equipment model.