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Designation system

The designations of SKF Y-bearings follow a system that consists of a basic designation with or without one prefix and/or one or more suffixes.

Examples and the applicable options for Y-bearings are given below.

Basic bearing designation system

Examples


Metric bearing:
YSP 207 SB-2FwhereYSP 207 =
SB =
-2F =

Inch bearing:
YAR 207-107-2RF/VE495whereYAR 207-107 =
-2RF =
VE495 =

Applicable options for Y-bearings

Test Designation 1
Prefixes (n.a.)

Test Designation 2
Basic designation
Bearing design
YARBearing with grub screws, inner ring extended on both sides
YARAGBearing with grub screws, inner ring extended on both sides, 5-lip seals, without lubrication holes
YATBearing with grub screws, inner ring extended on one side
YELBearing with an eccentric locking collar, inner ring extended on both sides
YELAGBearing with an eccentric locking collar, inner ring extended on both sides, 5-lip seals, without lubrication holes
YETBearing with an eccentric locking collar, inner ring extended on one side
YSABearing with a tapered bore, inner ring symmetrically extended on both sides
YSPBearing with SKF ConCentra locking technology, inner ring symmetrically extended on both sides
YSPAGBearing with SKF ConCentra locking technology, inner ring symmetrically extended on both sides, 5-lip seals, without lubrication holes
172Bearing with a standard inner ring
CYSBearing in the YET 2 series fitted with a rubber seating ring
Dimension series
2Outside diameter to ISO 15:2011, diameter series 2
62Bearing in accordance with ISO 15:2011, dimension
series 02, sphered outside surface
63Bearing in accordance with ISO 15:2011, dimension
series 03, sphered outside surface
Bore diameter d - Bearings for metric shafts
03/1212 mm
03/1515 mm
0317 mm
04
to
20
20 mm
to
100 mm
Bore diameter d - Bearings for inch shafts

Three-digits combination that follows the designation of the basic metric bearing and is separated from this by a hyphen; the first digit is the number of whole inches and the second and third digits are the number of sixteenths of an inch, e.g. 204-012
-008
to
-300
1/2 in. (12,7 mm)
to
3 in. (76,2 mm)

Catalogue image - Test Designation 3
Suffixes - Internal design
B
Lubrication holes in the outer ring (only for bearings with a standard inner ring)
SBSKF ConCentra ball bearing with shortened inner ring

Test Designation 4
Suffixes - External design (seals, snap ring groove etc.)
–2FContact seal, NBR, additional plain flinger, on both sides
-2RFContact seal, NBR, additional rubberized flinger, on both sides
-2RS1Contact seal, NBR, on both sides
CCylindrical outside surface
GLubrication groove in the outside surface, located at the side opposite the locking device
GR
Lubrication groove in the outside surface, located at the side of the locking device
KTapered bore, taper 1:12
UBearing without locking device

Catalogue image - Test Designation 5
Suffixes - Cage design (n.a.)

Catalogue image - Test Designation 6.1
Suffixes - Materials, heat treatment
HVBearing components of stainless steel; seals and flingers with food-compatible rubber; food-grade grease
VE495
Zinc-coated inner and outer rings; seals and flingers with stainless steel inserts and food-compatible rubber; food-grade grease
VL065
Zinc-coated inner ring bore and side faces

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

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

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


Suffixes - Lubrication
W
Bearing without lubrication hole(s)

Test Designation 6.6
Suffixes - Other variants
AH
Bearing for air-handling applications
VP076Shield on both sides
VP274
Contact seal, NBR, on both sides (only for bearings with a standard inner ring)
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