Product Description
Lock Washer
Frequently Asked Questions
Q: What is the purpose of the BJ 077221 lock washer in Big Joe equipment?
A: The BJ 077221 is an OEM lock washer that prevents fastener loosening in critical Big Joe electric lift truck assemblies. By creating mechanical resistance under the bolt head, it maintains clamping force despite vibration and operational shock loads.
Q: Which Big Joe lift truck components use the BJ 077221 lock washer?
A: The BJ 077221 lock washer is used in various critical fastener locations throughout Big Joe electric lift trucks, including structural welds, hydraulic connections, and drive system assemblies. Verify your equipment documentation to identify specific application locations.
Q: What material and design does the BJ 077221 lockwasher use?
A: The BJ 077221 lock washer is manufactured from hardened steel with a design that creates friction and mechanical interference under bolts. The specific tooth pattern or spring design is engineered to withstand the vibration environment of material handling equipment.
Q: Is the BJ 077221 reusable or should it be replaced with each bolt removal?
A: Lock washers should be replaced whenever fasteners are removed. Reusing lockwashers reduces their effectiveness because the locking mechanism deforms with each use. Always install new BJ 077221 washers to ensure consistent anti-loosening performance.
Q: What are the signs that BJ 077221 lockwashers are no longer effective?
A: Replace lockwashers if adjacent bolts show signs of loosening, if the washer is visibly flattened or damaged, or if fasteners repeatedly work loose after being tightened. Loss of locking effectiveness indicates the washer should be discarded and replaced.