Designation system

The designations of most SKF rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes and/or suffixes (→ Basic bearing designation system).
An example and the applicable options for drawn cup needle roller bearings are given below.
Basic bearing designation system


HK 2016.2RSwhereHK 2016 =
.2RS =

Test Designation 1
  Prefixes (n.a.)

Test Designation 2
Basic designation
BKDrawn cup needle roller bearing with a closed end
Drawn cup needle roller bearing with open ends
Drawn cup needle roller bearing with open ends, full complement

Catalogue image - Test Designation 3
Suffixes - Internal design (n.a.)

Test Designation 4
Suffixes - External design (seals, snap ring groove etc.)
RSContact seal (NBR or FKM or PUR) on one side
.2RSContact seal (NBR or FKM or PUR) on both sides
AS..Outer ring with lubrication hole(s), the number following indicates the number of holes

Catalogue image - Test Designation 5
Suffixes - Cage design
TNGlass fibre reinforced PA66 cage

Catalogue image - Test Designation 6.1
Suffixes - Materials, heat treatment (n.a.)

Test Designation 6.2
Suffixes - Accuracy, clearance, preload, quiet running (n.a.)

Catalogue image - Test Designation 6.3
Suffixes - Bearing sets, matched bearings (n.a.)

Test Designation 6.4
Suffixes - Stabilization (n.a.)

Suffixes - Lubrication
Special grease, two numbers following identify the grease

Test Designation 6.6
Suffixes - Other variants (n.a.)
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