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[edit | edit source]
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
≤400 mm outer diameter: EJ, EM and EMB >400 mm outer diameter: YM, YMB, YMD and YP |
Brass Cage SRB |
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Timken Spherical Roller Bearings Modification Codes[edit | edit source]
| 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 |