Page 1100 - Rollingbearings

Product data

25 Lock nuts

Product data

Lock nuts requiring a keyway Lock nuts with integral locking
KM, KML, HM T, HM and HME KMFE and KMK

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

Grub screws:
• KMFE → ISO 4028, material class 45H
• KMK → ISO 4026, material class 45H

Tolerances KM and KML Metric thread, 5H: ISO 965-3
Metric thread, 5H: ISO 965-3
Maximum axial run-out locating face/thread: 0,02 to
0,06 mm, depending on the lock nut size
Mounting slots according to DIN 981

HM, HME and HM .. T
Metric trapezoidal thread, 7H: ISO 2903
Maximum axial run-out locating face/thread: 0,06 to
0,16 mm, depending on the lock nut size
Mating shaft KM and KML Metric thread, 6g: ISO 965-3
threads Metric thread, 6g: ISO 965-3
(recommendation)
HM, HME and HM .. T
Metric trapezoidal thread, 7e: ISO 2903

Loosening torque – KMFE and KMK lock nuts are locked on the shaft
(sleeve) by friction The friction, and therefore the loos-
ening torque, varies as a result of the accuracy of the
tightening torque of the grub (set) screw, the surface
inish of the shaft (sleeve) thread, the amount of lubri-
cant on the thread, etc The lock nuts should be prop-
erly mounted to threads that are dry or only have a
minimum amount of lubricant on them
KMFE and KMK lock nuts provide suficient locking
for intended bearing applications

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