Difference between revisions of "Timken Spherical Roller Bearings"

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= Types of Spherical Roller Bearing =
 
= Types of Spherical Roller Bearing =
 +
{| class="wikitable"
 +
|+
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![[File:Steel Cage SRB.png|frameless]]
 +
Steel Cage SRB
 +
!'''<big>EJ : Land-riding steel cage; one per row</big>'''
 +
'''<big>EM/YM : Roller-riding one-piece brass cage</big>'''
 +
 +
'''<big>EMB/YMB : Land-riding one-piece brass cage</big>'''
 +
 +
'''<big>YMD : Land-riding two-piece brass cage</big>'''
 +
 +
'''<big>YP : Steel pin-type cage</big>'''
 +
 +
 +
 +
≤400 mm outer diameter: EJ, EM and EMB
 +
 +
>400 mm outer diameter: YM, YMB, YMD and YP
 +
![[File:Brass Cage SRB.png|frameless]]
 +
Brass Cage SRB
 +
|}
 +
 +
= Timken Spherical Roller Bearings Modification Codes =
 +
{| class="wikitable"
 +
!'''<big>TIMKEN</big>'''
 +
!'''<big>SKF</big>'''
 +
!'''<big>FAG</big>'''
 +
!'''<big>NSK</big>'''
 +
!'''<big>Timken General  Definition</big>'''
 +
|-
 +
|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
 +
|}

Latest revision as of 19:51, 23 March 2022

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.png

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.png

Brass Cage SRB

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
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