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Inner Ring (Part Numbers)

Inner Ring

Optimal for use with shafts that cannot be surface hardened or finished,
although shafts are often used directly as raceway surfaces without a needle roller bearing inner ring.

PDF

Japanese Only

Part Number

Configured Part Number is shown.

Drawing

Inner ring drawing

Product features details

Needle-shaped roller bearings often use the shaft directly as the raceway surface without using the inner ring, but when using a shaft that cannot be surface-hardened or ground, it is better to use the inner ring described here.
The inner ring is made of high carbon chrome bearing steel and is heat-treated and then ground.
It is desirable to use a wide inner ring when the axia ltravel length of the shaft with respect to the housing is large and when a seal is used on the outside of the bearing.

 

Normally, needle-shaped roller bearings use the shaft as the raceway surface without using the inner ring, but if the surface of the shaft cannot be processed to the specified hardness and roughness, the inner ring is used. High carbon chrome bearing steel is used, and after heat treatment, a high-precision grinding finish is applied.

  • It can also be used as a bushing.
  • There are metric and inch systems.
  • There is also a type with a lubrication hole in the center of the raceway surface.

Selection support information

Order example

Inner ring order example

The nominal number consists of a formal notation, a dimension symbol [inner diameter (d) × track diameter (F) × width (B)], and a suffix.

Part Number
IR22X26X16
IR22X26X20
IR22X28X17
IR22X28X20
IR22X28X20.5
IR22X28X23
IR22X28X30
IR25X29X20
IR25X29X30
IR25X30X12.5
IR25X30X16
IR25X30X17
IR25X30X18
IR25X30X18D
IR25X30X20
IR25X30X20.5
IR25X30X23
IR25X30X26
IR25X30X26.5
IR25X30X30
IR25X30X32
IR25X30X38.5
IR25X32X22
IR28X32X17
IR28X32X20
IR28X32X30
IR30X35X12.5
IR30X35X13
IR30X35X16
IR30X35X17
IR30X35X18D
IR30X35X20
IR30X35X20D
IR30X35X20.5
IR30X35X26
IR30X35X30
IR30X35X32
IR32X37X30
IR32X40X36
IR35X40X17
IR35X40X20
IR35X40X20.5
IR35X40X30
IR35X40X34
IR35X40X40
IR35X42X20
IR35X42X21D
IR35X42X27
IR35X42X36
IR38X43X20
IR38X43X30
IR40X45X17
IR40X45X20
IR40X45X20.5
IR40X45X26.5
IR40X45X30
IR40X45X34
IR40X45X40
IR40X48X22
IR40X48X23D
IR40X48X30
IR40X48X40
IR40X50X20
IR42X47X20
IR42X47X30
IR45X50X20
IR45X50X25
IR45X50X25.5
IR45X50X32
IR45X50X35
IR45X50X40
IR45X52X22
IR45X52X23D
IR45X52X30
IR45X52X40
IR45X55X20
IR45X55X40
IR50X55X20
IR50X55X25
IR50X55X35
IR50X55X40
IR50X58X23D
IR50X60X20
IR50X60X25
IR50X60X28
IR50X60X40
IR55X60X25
IR55X60X35
IR55X63X25
IR55X63X45
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSI.D.
(㎜)
O.D.
(㎜)
Width
(㎜)
With Oil Hole

MYR 25.82

1 Piece(s) 4 Day(s) or more -222616No

MYR 28.19

1 Piece(s) 4 Day(s) or more -222620No

MYR 27.58

1 Piece(s) 4 Day(s) or more -222817No

MYR 33.04

1 Piece(s) 7 Day(s) or more 10222820-

MYR 33.04

1 Piece(s) 7 Day(s) or more -222820.5No

MYR 27.60

1 Piece(s) 4 Day(s) or more -222823-

MYR 44.84

1 Piece(s) 7 Day(s) or more -222830-

MYR 27.58

1 Piece(s) 4 Day(s) or more -252920No

MYR 30.11

1 Piece(s) 4 Day(s) or more -252930No

MYR 25.82

1 Piece(s) 7 Day(s) or more 10253012.5No

MYR 25.28

1 Piece(s) 4 Day(s) or more -253016No

MYR 27.01

1 Piece(s) 7 Day(s) or more -253017No

MYR 28.43

1 Piece(s) 12 Day(s) or more 10253018No

MYR 31.90

1 Piece(s) 7 Day(s) or more 10253018Included

MYR 26.67

1 Piece(s) 2 Day(s) -253020No

MYR 33.61

1 Piece(s) 7 Day(s) or more -253020.5No

MYR 30.11

1 Piece(s) 4 Day(s) or more -253023No

MYR 35.85

1 Piece(s) 7 Day(s) or more -253026-

MYR 31.62

1 Piece(s) 4 Day(s) or more -253026.5No

MYR 42.40

1 Piece(s) 4 Day(s) or more -253030No

MYR 45.96

1 Piece(s) 7 Day(s) or more -253032No

MYR 44.29

1 Piece(s) 4 Day(s) or more -253038.5No

MYR 30.89

1 Piece(s) 7 Day(s) or more 10253222No

MYR 27.01

1 Piece(s) 7 Day(s) or more -283217No

MYR 28.19

1 Piece(s) 7 Day(s) or more -283220No

MYR 45.06

1 Piece(s) 7 Day(s) or more -283230No

MYR 28.19

1 Piece(s) 7 Day(s) or more -303512.5-

MYR 28.86

1 Piece(s) 7 Day(s) or more -303513-

MYR 30.89

1 Piece(s) 7 Day(s) or more -303516-

MYR 30.89

1 Piece(s) 7 Day(s) or more -303517No

MYR 31.90

1 Piece(s) 7 Day(s) or more -303518Included

MYR 29.59

1 Piece(s) 2 Day(s) -303520No

MYR 37.54

1 Piece(s) 7 Day(s) or more 10303520Included

MYR 30.89

1 Piece(s) 7 Day(s) or more -303520.5No

MYR 42.60

1 Piece(s) 7 Day(s) or more -303526-

MYR 44.06

1 Piece(s) 4 Day(s) or more -303530No

MYR 46.99

1 Piece(s) 4 Day(s) or more -303532No

MYR 43.38

1 Piece(s) 7 Day(s) or more -323730No

MYR 52.71

1 Piece(s) 7 Day(s) or more -324036-

MYR 35.28

1 Piece(s) 7 Day(s) or more -354017-

MYR 35.48

1 Piece(s) 4 Day(s) or more -354020No

MYR 40.91

1 Piece(s) 7 Day(s) or more -354020.5-

MYR 45.64

1 Piece(s) 4 Day(s) or more -354030No

MYR 53.27

1 Piece(s) 8 Day(s) or more -354034No

MYR 66.81

1 Piece(s) 7 Day(s) or more -354040No

MYR 36.97

1 Piece(s) 7 Day(s) or more -354220-

MYR 38.15

1 Piece(s) 7 Day(s) or more -354221Included

MYR 42.60

1 Piece(s) 4 Day(s) or more -354227No

MYR 57.89

1 Piece(s) 7 Day(s) or more -354236-

MYR 36.79

1 Piece(s) 7 Day(s) or more -384320-

MYR 45.06

1 Piece(s) 7 Day(s) or more -384330-

MYR 38.15

1 Piece(s) 7 Day(s) or more -404517No

MYR 39.57

1 Piece(s) 2 Day(s) -404520No

MYR 42.60

1 Piece(s) 7 Day(s) or more -404520.5-

MYR 45.06

1 Piece(s) 7 Day(s) or more 10404526.5No

MYR 47.93

1 Piece(s) 11 Day(s) or more -404530No

MYR 52.71

1 Piece(s) 7 Day(s) or more -404534-

MYR 61.19

1 Piece(s) 7 Day(s) or more -404540No

MYR 38.15

1 Piece(s) 7 Day(s) or more -404822-

MYR 44.84

1 Piece(s) 7 Day(s) or more 10404823Included

MYR 66.81

1 Piece(s) 7 Day(s) or more -404830-

MYR 73.24

1 Piece(s) 7 Day(s) or more -404840-

MYR 39.78

1 Piece(s) 4 Day(s) or more 10405020-

MYR 42.03

1 Piece(s) 7 Day(s) or more -424720-

MYR 51.14

1 Piece(s) 7 Day(s) or more -424730-

MYR 44.84

1 Piece(s) 7 Day(s) or more -455020-

MYR 45.64

1 Piece(s) 7 Day(s) or more -455025No

MYR 47.65

1 Piece(s) 7 Day(s) or more -455025.5-

MYR 54.08

1 Piece(s) 4 Day(s) or more 10455032No

MYR 54.75

1 Piece(s) 4 Day(s) or more -455035No

MYR 65.01

1 Piece(s) 7 Day(s) or more -455040No

MYR 45.06

1 Piece(s) 7 Day(s) or more -455222-

MYR 52.14

1 Piece(s) 7 Day(s) or more -455223Included

MYR 66.00

1 Piece(s) 7 Day(s) or more -455230-

MYR 80.38

1 Piece(s) 7 Day(s) or more -455240No

MYR 46.14

1 Piece(s) 4 Day(s) or more -455520-

MYR 78.49

1 Piece(s) 7 Day(s) or more -455540-

MYR 48.21

1 Piece(s) 7 Day(s) or more -505520-

MYR 51.14

1 Piece(s) 7 Day(s) or more -505525-

MYR 64.31

1 Piece(s) 7 Day(s) or more -505535-

MYR 78.05

1 Piece(s) 7 Day(s) or more -505540-

MYR 57.89

1 Piece(s) 7 Day(s) or more -505823Included

MYR 48.63

1 Piece(s) 4 Day(s) or more -506020No

MYR 53.27

1 Piece(s) 7 Day(s) or more -506025No

MYR 57.89

1 Piece(s) 7 Day(s) or more 10506028-

MYR 84.23

1 Piece(s) 7 Day(s) or more -506040-

MYR 54.42

1 Piece(s) 4 Day(s) or more -556025No

MYR 66.67

1 Piece(s) 7 Day(s) or more -556035-

MYR 53.84

1 Piece(s) 7 Day(s) or more -556325-

MYR 97.18

1 Piece(s) 7 Day(s) or more -556345No

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