Ball Bearing - Timken

Radial Bearing Prefixes and Suffixes
PREFIX SUFFIX A, B, E, H, J, K, Q, U, W AND NUMERICAL SUFFIXES ARE SPECIALTY BEARINGS WITH
NON-STANDARD DIMENSIONS AND FEATURES
-R Relubricatable. Adapter and pillow block types.
-R Wedding ring supplied with rear wheel types.
-R Special feature in clutch release types.
RA, RB- Variation in carrier on clutch release types.
-RH Right hand thread.
-RM Relubricatable, M=non-significant.
-RPC Narrow single lip "non-removable" land-riding seal, prelubricated, with eccentric
locking collar.
-RP2C, Narrow single lip "non-removable" land-riding seal, prelubricated, special I.D.
RPCC with eccentric locking collar.
-RS High center-line on pillow block types.
-RUAN Narrow single lip "non-removable" land-riding seal and double lip "non-removable"
land-riding seal, special baring dimensions.
RW- Rear wheel bearing with variation of basic design.
RWC, RWF, RWP- Rear wheel bearing with variation of basic design.
S- Idler pulley shell style–sprocket type.
S- Variation in carrier on clutch release types.
S- Bearing outer ring with spherical O.D.
-S Steel shield on one side of bearing (with max-type bearings, shield opposite
loading slot).
-S Idler pulley-soft shell.
SAFNR, SFNR- Four-bolt cast iron flange, narrow adapter bearing with narrow single lip seal.
Set screw inner ring.
SATNR, STNR- Two-bolt cast iron flange, narrow adapter bearing with narrow single lip seal.
Set screw inner ring.
-SC Stoned corner on mounting washer. Carrier is supplied with bearing.
Clutch release types.
-SL Snap ring groove on side of bearing opposite shield. Snap ring supplied.
-SLA Snap ring groove on same side of bearing as shield. Snap ring not supplied.
-SLB Snap ring groove on side of bearing opposite shield. Snap ring supplied.
Shield mounted on O.D. of inner ring.
-SLO Snap ring groove on side of bearing opposite shield. Snap ring not supplied.
-SLV Snap ring groove on same side of bearing as shield. Snap ring supplied.
-SLVB Snap ring groove on side of bearing opposite shield. Snap ring supplied.
Shield mounted on O.D. of inner ring.
SNPS- Set screw inner ring, narrow adapter, precision ground with spherical O.D.
SPB- Stamped steel pillow block.
SPNR- Set screw inner ring, cast iron pillow block, narrow adapter bearing with
narrow single lip seal.
-SV Steel shield on opposite side from standard.
SWPS- Wide, set screw adapter bearing.
S2L- Sprocket idler pulley, narrow width, prelubricated.
6L- Sprocket idler pulley, high speed series, prelubricated.
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