Page 1097 - Rollingbearings

Designs and variants
Lock nuts with KMK lock nuts Fig. 12
integral locking KMK lock nuts (ig. 13): KMFE lock nut

Lock nuts with integral locking reduce the • are intended to locate radial bearings in
cost of the shaft as no keyway is required less demanding applications
Installation is quicker and easier because no • are available for thread M 10x0,75 to
separate locking device is necessary M 100x2 (sizes 0 to 20)

KMK lock nuts should not be used on shafts
KMFE lock nuts with keyways or adapter sleeves with key
slots Damage to the locking device can
KMFE lock nuts (ig. 12): result if it aligns with a keyway or slot KMK
lock nuts can be reused, provided they are
• are designed to locate CARB toroidal roller not damaged
bearings, sealed spherical roller bearings These lock nuts are not listed in this cata- Fig. 13
and sealed self-aligning ball bearings axi- logue, but can be found online at KMK lock nut
ally on a shaft skf com/go/17000-25-5
• have appropriate contact faces for the
intended bearings
• are available for thread M 20x1 to The locking principle
M 200x3 (sizes 4 to 40)
Lock nuts with integral locking are locked by
KMFE lock nuts should not be used on shafts friction The friction is suficient to lock the
with a keyway They should only be used nut in place
with special adapter sleeves with a narrow KMFE lock nuts have an integral grub (set)
slot Damage to the nut can result if the grub screw, to lock the nut in place When the
screw aligns with a keyway or wide slot grub screw is tightened, it causes the nut
KMFE lock nuts can be reused, provided they thread to deform and press against the shaft
are not damaged or sleeve thread (ig. 14)
KMK have a threaded steel insert in their Fig. 14
Features and beneits bore The threads on the insert match the Locking with a locking screw – KMFE
lock nut threads The insert acts as a pres-
• Maximum axial run-out between the sure plate when a grub screw, which runs
locating face and thread: 0,02 to 0,03 mm through the body of the lock nut, is tightened
• No keyway required (ig. 15)
• Simple to install
• Simple and robust locking
• Reusable
• Appropriate contact faces for intended
bearings
• Equipped with visual marks for the use of
tightening angles

Fig. 15
Locking with an integral locking device
– KMK

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