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Inner Ring

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
IR5X7X10
IR5X8X12
IR5X8X16
IR6X10X10
IR6X10X12D
IR6X10X13
IR7X10X10.5
IR7X10X12
IR7X10X16
IR7X12X16
IR8X10X11
IR8X12X10.5
IR8X12X12D
IR8X12X12.5
IR8X14X16
IR9X12X11
IR9X12X12
IR10X13X12.5
IR10X14X13
IR10X14X14D
IR10X14X16
IR10X14X20
IR10X15X15.5
IR10X15X20.5
IR10X16X16
IR12X15X12
IR12X15X16.5
IR12X15X22.5
IR12X16X12
IR12X16X14D
IR12X16X16
IR12X16X22
IR12X17X20.5
IR12X17X25.5
IR15X18X12.5
IR15X18X16
IR15X18X16.5
IR15X18X17.5
IR15X18X20.5
IR15X18X25.5
IR15X19X16
IR15X19X20
IR15X20X13
IR15X20X14D
IR15X20X18
IR15X20X23
IR15X20X26
IR15X20X30.5
IR15X22X20
IR17X20X16
IR17X20X16.5
IR17X20X20.5
IR17X20X30.5
IR17X21X16
IR17X21X20
IR17X22X13
IR17X22X14D
IR17X22X16
IR17X22X16D
IR17X22X18
Part NumberMinimum order quantityVolume DiscountDays to ShipRoHSI.D.
(㎜)
O.D.
(㎜)
Width
(㎜)
With Oil Hole
1 Piece(s) 16 Day(s) or more -5710No
1 Piece(s) 16 Day(s) or more -5812No
1 Piece(s) 15 Day(s) or more -5816-
1 Piece(s) 16 Day(s) or more -61010No
1 Piece(s) 19 Day(s) or more -61012Included
1 Piece(s) 19 Day(s) or more -61013No
1 Piece(s) 11 Day(s) or more -71010.5No
1 Piece(s) 11 Day(s) or more -71012No
1 Piece(s) 19 Day(s) or more -71016No
1 Piece(s) 11 Day(s) or more -71216-
1 Piece(s) 16 Day(s) or more -81011No
1 Piece(s) 11 Day(s) or more -81210.5No
1 Piece(s) 19 Day(s) or more -81212Included
1 Piece(s) 19 Day(s) or more -81212.5No
1 Piece(s) 11 Day(s) or more 1081416-
1 Piece(s) 11 Day(s) or more -91211No
1 Piece(s) 19 Day(s) or more -91212No
1 Piece(s) 16 Day(s) or more -101312.5No
1 Piece(s) 16 Day(s) or more -101413No
1 Piece(s) 19 Day(s) or more -101414Included
1 Piece(s) 16 Day(s) or more -101416No
1 Piece(s) 16 Day(s) or more -101420-
1 Piece(s) 19 Day(s) or more -101515.5-
1 Piece(s) 11 Day(s) or more -101520.5-
1 Piece(s) 19 Day(s) or more 10101616-
1 Piece(s) 16 Day(s) or more 10121512-
1 Piece(s) 11 Day(s) or more -121516.5-
1 Piece(s) 11 Day(s) or more -121522.5No
1 Piece(s) 19 Day(s) or more -121612No
1 Piece(s) 12 Day(s) or more -121614Included
1 Piece(s) Same day -121616No
1 Piece(s) 19 Day(s) or more -121622No
1 Piece(s) 16 Day(s) or more -121720.5No
1 Piece(s) 11 Day(s) or more -121725.5-
1 Piece(s) 19 Day(s) or more -151812.5-
1 Piece(s) 16 Day(s) or more -151816No
1 Piece(s) 11 Day(s) or more -151816.5-
1 Piece(s) 11 Day(s) or more -151817.5-
1 Piece(s) 11 Day(s) or more -151820.5-
1 Piece(s) 11 Day(s) or more -151825.5-
1 Piece(s) 16 Day(s) or more -151916No
1 Piece(s) 15 Day(s) or more -151920-
1 Piece(s) 16 Day(s) or more -152013No
1 Piece(s) 11 Day(s) or more -152014Included
1 Piece(s) Same day -152018No
1 Piece(s) 16 Day(s) or more -152023No
1 Piece(s) 19 Day(s) or more -152026No
1 Piece(s) 11 Day(s) or more -152030.5No
1 Piece(s) 11 Day(s) or more -152220-
1 Piece(s) 16 Day(s) or more -172016No
1 Piece(s) 11 Day(s) or more -172016.5No
1 Piece(s) 19 Day(s) or more -172020.5-
1 Piece(s) 16 Day(s) or more -172030.5No
1 Piece(s) 16 Day(s) or more -172116-
1 Piece(s) 11 Day(s) or more -172120No
1 Piece(s) Same day -172213-
1 Piece(s) 19 Day(s) or more -172214Included
1 Piece(s) 16 Day(s) or more -172216No
1 Piece(s) 19 Day(s) or more 10172216Included
1 Piece(s) 11 Day(s) or more -172218No

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