Page 1095 - Rollingbearings

Designs and variants
Lock nuts requiring a N and AN inch lock nuts Fig. 1
keyway N and AN inch lock nuts (ig. 1): KM, KML, HM .. T, AN and N (size ≤ 44)
lock nut
KM, KML and HM .. T metric • using a W lock washer (ig. 3) are available
lock nuts up to and including size 44 (thread
diameter 8 628 in )
KM and KML lock nuts (ig. 1): • using a locking plate (ig. 4) are low-
proile-series lock nuts for nominal thread
• have metric threads diameters ranging from 9 442 to
• are designed to be used with lock washers 37 410 in (sizes N 048 to N 950)
• have four equally-spaced slots located • have four, equally spaced slots around
around their circumference to accommo- their circumference to accommodate a
date a hook or impact spanner (ig. 2) hook or impact spanner (ig. 2)
• are also referred to as shaft or withdrawal • are also referred to as shaft or withdrawal
nuts nuts Fig. 2
• are available for thread M 10x0,75 to • N 00 to N 14, AN 15 to AN 40 and N 44 KM, KML, HM .. T, AN and N (size ≤ 44) lock
M 200x3 (sizes 0 to 40) lock nuts are normal series lock nuts com- nut
• can be locked with either the MB lock monly used together with bearings in the
washer (ig. 3) or with a stronger, MB A 12, 13, 222, 223 and 232 series up to size
lock washer 23244, mounted directly to the shaft or via
an adapter sleeve
KML lock nuts have a lower cross-sectional • N 022 to N 044 lock nuts are low- proile-
height than KM lock nuts series lock nuts commonly used together
with bearings in the 230 series They can
HM T lock nuts (ig. 1): also be used to secure other bearing types
and other machine components
• have metric trapezoidal threads • N lock nuts with a locking plate are com-
• are also referred to as removal nuts monly used with bearings in the 230, 231
• are available for thread Tr 210x4 to and 232 series (sizes ≥ 48), but can also be
Tr 280x4 (sizes 42 to 56) used to retain any suitable bearing or Fig. 3
For some sizes, no lock washer is availa- other machine component MB or W lock washer
ble because these nuts are intended to
dismount bearings with a tapered bore N and AN lock nuts can be reused, provided
from a withdrawal sleeve they are not damaged A new lock washer or
locking plate should be used each time the
KM, KML and HM…T lock nuts can be reused, corresponding lock nut is installed
provided they are not damaged A new lock
washer should be used each time the corre- Features and beneits
sponding lock nut is installed
• Simple, stable and reliable fastening
Features and beneits element
• Wide range of sizes
• Simple, stable and reliable fastening • Easy to install and remove
• Wide range of sizes • Lock washers available for thread 0 391 to
• Easy to install and remove 8 628 in (sizes 00 to 44) Fig. 4
• Thread diameters ranging from 10 to • Locking plates available for thread 9 442 PL locking plate
280 mm to 18 894 in (sizes 048 to 096) and for
thread 19 682 to 37 410 in (sizes 500 to
950)

These lock nuts are not listed in this cata-
logue, but can be found online at
skf com/go/17000-25-8

25

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