Page 1092 - Rollingbearings

25 Lock nuts

Lock nuts are used to locate bearings onto a Designs and
shaft Additionally, they can be used to
mount bearings with a tapered bore onto variants
tapered shaft seats and adapter sleeves, and
to dismount bearings from withdrawal
sleeves Lock nuts are also frequently used SKF lock nuts provide a variety of ways to
to secure gears, belt pulleys and other secure the nut onto a shaft The lock nuts
machine components listed here constitute the basic SKF assort-
Lock nuts have to be secured to prevent ment Lock nuts with other locking methods
unintentional loosening by: can be supplied on request For additional
information, contact SKF
• a locking device that engages a keyway in The following tables provide an overview
the shaft or key slot in the adapter sleeve, over the basic SKF assortment:
or
• a locking mechanism integrated in the nut • table 1 for SKF industrial lock nuts
• table 2, page 1092 for SKF precision lock
When choosing or replacing a lock nut, there nuts
are a number of factors that should be taken
into consideration They include, but are not Lock nuts with integral locking reduce the
limited to: cost of the shaft as no keyway is required
Installation is quicker and easier because no
• Space – axial and radial separate locking device is necessary How-
• Shaft rotation – one or both directions ever, the loosening torque of these lock nuts
• Axial loads requires more attention For information on
• Dynamic behaviour of the application loosening torque, refer to Product data,
• Cost and downtime of machining keyways page 1098
in shafts vs other locking methods
• Ease and frequency of assembly and
disassembly
• Precision

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