Designation system

The designations of SKF bearing accessories follow a system that consists of a product type and size identification with or without a suffix.

An example and the applicable options for precision lock nuts with axial locking screws are given below.
Basic bearing designation system
KMD 11
whereKMD =
11 =

Applicable options for precision lock nuts with axial locking screws

Test Designation 2
Product type
KMD
Two-part precision lock nut with axial locking screws

Test Designation 2
Size identification
4 to
(x5) 20 mm thread diameter
21
(x5) 105 mm thread diameter

Catalogue image - Test Designation 3
Suffixes
-
Steel
SKF logo