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Designation system

The complete designation for a Y-bearing or a Y-bearing unit consists of a basic designation with or without one prefix and/or one or more suffixes.

For details about Y-bearing designation system, refer to Y-bearings.

Y-bearing flanged units

Designation examples and the applicable options for Y-bearing flanged units are given below.
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Examples


Metric units:
FYTBK 35 LFwhereFYTB =
K =
35 =
LF =
FYWK 50 LTHRwhereFY =
W =
K =
50 =
L =
THR =

Inch unit:
FY 1 1/2 LF/AHwhereFY =
1 1/2 =
LF
AH =

Applicable options for Y-bearing flanged units

Housing/unit type

J stands for dimensions in accordance with JIS 1559-2009

W at the end of the housing series designation identifies an SKF Food Line Y-bearing unit or housing
FY
Square flanged housing
FYA3-bolt bracket flanged housing
FYCRound flanged housing
FYMSquare flanged housing, higher load carrying capacity
FYT(B)Oval flanged housing
PF
Round flanged housing, pressed steel
PFDTriangular flanged housing, pressed steel
PFTOval flanged housing, pressed steel

Housing material
Grey cast iron
KComposite
R
Stainless steel

Size identification
Bearing units for metric shafts: bearing bore uncoded
12
to
100
12 mm
to
100 mm
Bearing units for inch shafts: bearing bore uncoded
1/2
to
3
1/2 in. (12,7 mm)
to
3 in. (76,2 mm)
Housings made of cast iron, composite, composite for SKF Food Line or stainless steel
503
to
520
for Y-bearings of sizes 203, 203-008, 203/12 and 203/15
to
for Y-bearings of size 220
Housings made of pressed steel (not supplied as bearing unit)
40
to
90
40 mm housing bore diameter
to
90 mm housing bore diameter

Additional housing features
A
Next smaller size than normal (inch units only)
L
Suitable for ECL end cover
N

Relubricable execution of composite housing.

In case of SKF Food Line Y-bearing units only used in combination with suffix VZ1A2 (→ )

Y
Suitable for ECW end cover

Inserted Y-bearing
FMY-bearing with an eccentric locking collar, YET 2 series
KFY-bearing with a tapered bore on an adapter sleeve, YSA 2-2FK series
LD, LDW
Y-bearing with SKF ConCentra locking, YSPAG 2 series
LFY-bearing with SKF ConCentra locking, YSP 2-2F series
RM
Y-bearing with grub screws, YAT 2 series
TA
SKF Food Line Y-bearing with grub screws, YAR 2-2RF/VE495 series
TD, TDW
Y-bearing with grub screws, YARAG 2 series
TF
Y-bearing with grub screws, YAR 2-2F series
TH
SKF Food Line Y-bearing with grub screws, YAR 2-2RF/HV series
THR
SKF Food Line Y-bearing with grub screws, YAR 2-2RFGR/HV series
TR
Y-bearing with grub screws, YAR 2-2RF series
WD, WDW
Y-bearing with an eccentric locking collar, YELAG 2 series
WFY-bearing with an eccentric locking collar, YEL 2-2F series
WR
Y-bearing with an eccentric locking collar, YEL 2-2RF series

Suffixes - other features
AHY-unit for air-handling application
VL065Zinc-coated bearing inner ring bore and side faces
VZ1A2
Relubricable execution of SKF Food Line Y-bearing unit with composite housing, only used in combination with suffix N (→ ).
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