Product data

Dimension standardsISO 2982-2, except for the lock nut width and the outside diameter of the clamp face

Grub screws:

  • KMK → ISO 4026, material class 45H
  • KMFE → ISO 4028, material class 45H
TolerancesMetric thread, 5H: ISO 965-3
Mating shaft threads
(recommendation)
Metric thread, 6g: ISO 965-3
Loosening torque
KMK and KMFE lock nuts are locked on the shaft (sleeve) by friction. The friction, and therefore the loosening torque, varies as a result of the accuracy of the tightening torque of the grub (set) screw, the surface finish of the shaft (sleeve) thread, the amount of lubricant on the thread, etc. The lock nuts should be properly mounted to threads that are dry or only have a minimum amount of lubricant on them.

KMK and KMFE lock nuts provide sufficient locking for intended bearing applications.
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