Lock Washers (MB Series)

MB Series Lock Washers – DIN 5406 | Bearing Tab Washers

MB Series Lock Washers are tab-type bearing lock washers designed to work in conjunction with KM Series lock nuts to prevent axial loosening of bearings on shafts. The inner tab locates in the shaft keyway, while one of the outer tabs is bent up into a slot on the KM nut after tightening, providing a positive mechanical lock.

Typical Applications

• Positive locking of KM Series lock nuts on shafts
• Bearing retention in gearboxes, motors, and spindle assemblies
• Conveyor drives and rolling mill equipment
• Any application requiring vibration-proof bearing retention

Always used in combination with KM Series lock nuts. Select the MB size matching your KM nut size.