Timken Spherical Roller Bearings

Misalignment. Contamination. High temperatures. Even extreme speeds or critical stresses can present extra challenges when managing high radial loads. Timken® spherical roller bearings can handle it all, with innovations designed to extend bearing life and boost reliability.

Timken Spherical Roller Bearings with hardened steel cages deliver greater fatigue strength, increased wear-resistance and tougher protection against shock and acceleration.

Timken Spherical Roller Bearings with brass cages provide extra strength and durability in the most unrelenting conditions, including extreme shock and vibration, high acceleration forces and minimal lubrication.

Types of Spherical Roller Bearing

Steel Cage SRB	EJ : Land-riding steel cage; one per row EM/YM : Roller-riding one-piece brass cage EMB/YMB : Land-riding one-piece brass cage YMD : Land-riding two-piece brass cage YP : Steel pin-type cage	Brass Cage SRB

Timken Spherical Roller Bearings Modification Codes

TIMKEN	SKF	FAG	NSK	Timken General Definition
EJ	E, EJA, C, CC, CCJA, EC, ECC	E1	EA	Stamped nitrided steel cage – high performance
EM	CA, CAC, CAF, ECA, ECAF, CCJA	M		One-piece, roller-riding, machined-brass  cage – high performance
EMB	CAFA, CAMA	MB		One-piece, inner-ring-piloted, machined-brass cage – high performance
CJ	C, CC, CCJA, EC, ECC	J	Cag, C, CD	Stamped-steel cage – high performance
YM	CA, CAC, CAF, ECA, ECAF, CCJA	M	CA	One-piece, roller-riding, machined-brass cage
YMB	CAFA, CAMA	MB	CAM, AM	One-piece, inner-ring-piloted, machined-brass cage
YMD				Two-piece, inner-ring-piloted, machined-brass cage
C2	C2	C2	C2	Bearing radial internal clearance (RIC) smaller than normal
C3	C3	C3	C3	Bearing radial internal clearance (RIC) greater than normal
C4	C4	C4	C4	Bearing radial internal clearance (RIC) greater than C3
C5	C5	C5	C5	Bearing radial internal clearance (RIC) greater than C4
C6	C6	C6	CGxx, SLxx	Specific RIC designed to bearing size
S1(4)	S1	S1	S11	Bearing rings dimensionally stabilized for use at operating temperatures up to 200° C (392° F)
S2	S2	S2		Bearing rings dimensionally stabilized for use at operating temperatures up to 250° C (482° F)
S3	S3	S3		Bearing rings dimensionally stabilized for use at operating temperatures up to 300° C (572° F)
S4	S4	S4		Bearing rings dimensionally stabilized for use at operating temperatures up to 350° C (662° F)
C02	C02	T52BE	P5B, P53	Inner ring with P5 running accuracy, W4 (SKF does not include W4)
C04	C04	T52BN	P5C, P52	Outer ring with P5 running accuracy, W4 (SKF does not include W4)
C08	C08	T52BW	P55	P5 running accuracy  (C02 + C04)
C08C3	C083	C3, T52BW	P55, C3	P5 running accuracy  (C02 + C04), C3 RIC
C08C4	C084	C4, T52BW	P55, C4	P5 running accuracy  (C02 + C04), C4 RIC
K	K	K	K	Tapered bore  (1:12 on diameter  22, 23, 30, 31, 32, 33, 39 series)
K	K30	K30	K30	Tapered bore  (1:30 on diameter  40, 41, 42 series)
W4	W4	J26A		Mark high and low points of eccentricity on face of rings
W6R				Engineered surface thin-film coating  ES302 on roller contact surfaces
W20	W20	SY	E3	Outer ring with lubrication holes
W22	W22	T50H	S (a, b)	Special reduced O.D. tolerance on outer rings
W25	W73			Outer ring counter-drilled lubrication holes
W31	W31		U22	Bearing inspected  to certain quality control requirements
W33	W33	S	E4	Standard lubrication holes and groove in outer ring
W40	ECD-	W209	g	Bearing made of carburizing-grade steel
W40I	HA3, ECB-	W209B	g3	Inner ring only made of carburizing-grade  steel
W40R			g1	Roller only made of carburizing-grade steel
W40E			g2	Outer ring only made of carburizing-grade  steel
W45A	VE 553			Tapped lifting holes in face of outer ring to facilitate lifting and handling
W47	VA414 (incl W800 & W47)	T41B (incl W22 & W47)		Inner ring with oversize bore
W84	W77	H44SA, H40	E42	Outer ring with standard lubrication holes plugged
W841	W	H40		Outer ring with no lubrication hole
W88				Special reduced bore tolerance on inner ring
W89				Inner ring with lubrication holes and lubrication groove
W94	W26	H40AB	E5	Inner-ring lubrication holes
W507	W507	J26A	E4U22, E4P53	W31 + W33 + W45A
W509	W509 (W26 + W31 + W33)	S.H40A	E7U22	W31 + W33 + W94 + W45A (where  feasible)
W525	W525 (W31 + W77)	S.H44S		W31 + W33 + W84 + W45A (where  feasible)
W800	VA405	T41A	U15, VS	Shaker screen modification  (W22 + W88 + radial internal clearance in upper 2⁄3 of range specified range)
W906A	C083HA3	T52BW.W209B		C08 + W31 +W33 + W40I + W40R