Gregory Bender

Roller bearing cross-references

Basic bearing cross-reference information.

Created:

Updated:

Glossary - Cylindrical Roller Bearings

Interchange - Cylindrical Roller Bearings

Photo courtesy of McMaster-Carr.

Photo courtesy of McMaster-Carr.

  Description NSK SKF FAG
Prefix Single row, no flanges on outer ring N N N
Single row, no flanges on inner ring NU NU NU
Single row, 1 flange inner NJ NJ NJ
Single row, 1 flange outer NF NF --
Single row, 1 flange inner, with retaining ring NUP NUP NUP
Single row, 1 flange inner w/stabilizing ring NH NH NH
Double row, flanges outer/flanges inner HJ HJ HJ
  NNU/NN NNU/NN NNU/NN
P/N Light 2XX 2XX 2XX
Medium 3XX 3XX 3XX
Heavy 4XX 4XX 4XX
Extra Light 10XX 10XX 10XX
Light, Wide 22XX 22XX 22XX
Medium, Wide 23XX 23XX 23XX
Suffix Ployamide cage T P TVP2
Composite high temp (200°C) cage T7 -- --
Machined brass cage M M M,M1
Pressed steel cage W,WS J JP1
High capacity design E EC E
Full complement (no cage) V V V
Tight clearance C2 C2 C2
Normal clearance BLANK BLANK BLANK
Loose clearance C3 C3 C3
Extra loose clearance C4 C4 C4

Glossary - Spherical Roller Bearings

Interchange - Spherical Roller Bearings

Photo courtesy of NSK.

Photo courtesy of NSK.

  Description NSK SKF Torr/FAF FAG
P/N Very Light 239xx 239xx 239xx 239xx
Light 230xx 230xx 230xx 230xx
Light, Wide 240xx 240xx 240xx 240xx
Medium 231xx 231xx 231xx 231xx
Medium, Wide 241xx 241xx 241xx 241xx
Heavy 222xx 222xx 222xx 222xx
Heavy, Wide 232xx 232xx 232xx 232xx
Extra Heavy 213xx 213xx 213xx 213xx
Extra Heavy, Wide 223xx 223xx 223xx 223xx
Suffix Bronze case, one piece, guide ring CAM,AM CA,CACM YM M
Bronze cage, two piece, guide flange M MC BR MB
Steel cage, two piece, guide ring C,CD CJ,CC CJ, VJ BLANK
Polyamide cage, two piece H -- VCF TVPB
Tapered bore 1:12 K K K K
Tapered bore 1:30 K30 K30 K K30
Carburized steel, complete bearing g ECD W40 W209
Carburized steel, inner ring only g3 ECB W401 W209B
Lube groove & holes outer ring E4 W33 W33 S
Lube groove & holes outer ring, holes inner ring E7 W513 W33W94 Sheading0AB
Holes only outer ring E3 W20 W20 SY
Holes only inner ring E5 W26 W94 heading0AB
No relube features BLANK BLANK BLANK --
Plugs provided for outer ring holes E42 W77 W84 heading0
Combination W33, W4, W31 E4P53 W507 W33W4W31 --
Combination W33, W31 E4U22 W506 W33W31 --
Combination W33, W26, W31 E7U22 W509 W33W94W31 Sheading0A
Outer ring w/extra close running accuracy P52 C04 C04 T52BN
Inner ring w/extra close running accuracy P53 C02 C02 T52BE
Inner & outer ring w/extra close running accuracy P55 C08 C08 T52BW
Special inspection measures U22 W31 W31 --
Inner ring & outer ring heat stabilized to 200°C S11 S1 -- --
Tight clearance C2 C2 C2 C2
Normal clearance BLANK BLANK BLANK BLANK
Loose clearance C3 C3 C3 C3
Extra loose clearance C4 C4 C4 C4

Glossary - Tapered Roller Bearings

Interchange - Inch Tapered Roller Bearings

Photo courtesy of McMaster-Carr.

Photo courtesy of McMaster-Carr.

Photo courtesy of McMaster-Carr.

  Description NSK SKF Timken FAG
Prefix Extra heavy EH EH EH KEH
Heavier than heavy HH HH HH KHH
Heavy H H H KH
Heavy medium HM HM HM KHM
Medium M M M KM
Light medium LM LM LM KLM
Light L L L KL
Lighter than light LL LL LL KLL
Extra light EL EL EL KEL
Cup Angle 0° to 23°59'59.99 1xxxx 1xxxx 1xxxx 1xxxx
24° to 25°29'59.99 2xxxx 2xxxx 2xxxx 2xxxx
25°30' to 26°59'59.99 3xxxx 3xxxx 3xxxx 3xxxx
27° to 28°29'59.99 4xxxx 4xxxx 4xxxx 4xxxx
28°30' to 30°29'59.99 5xxxx 5xxxx 5xxxx 5xxxx
30°30' to 32°29'59.99 6xxxx 6xxxx 6xxxx 6xxxx
32°30' to 35°59'59.99 7xxxx 7xxxx 7xxxx 7xxxx
36° to 44°59'59.99 8xxxx 8xxxx 8xxxx 8xxxx
45° up, but not thrust only conforms to AFBMA standard case carburized cup & cone 9xxxx 9xxxx 9xxxx 9xxxx
  R      
  G      

Interchange - Metric Tapered Roller Bearings

  Description NSK SKF Timken FAG
P/N High capacity design HR -- -- --
Light HR302xx 302xx 302xx 302xx
Medium HR303xx 303xx 303xx 303xx
Medium, steep angle HR303xxD 313xx 313xx 313xx
Extra light, wide HR329xx 329xx 329xx 329xx
very light, wide HR320xx 320xx 320xx 320xx
Light, wide HR322xx 322xx 322xx 322xx
Medium, wide HR323xx 323xx 323xx 323xx
Very light, extra wide HR330xx 330xx 330xx 330xx
Light, extra wide HR331xx 331xx 331xx 331xx
Medium, extra wide HR332xx 332xx 332xx 332xx
Suffix Medium contact angle C B B B
Steep contact angle D -- -- --
Modified internal design X X X X
Conforms to ISO 355 J -- -- A