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Inner Race

Inner races are essential components of needle roller bearings, providing a smooth and hardened surface for the small cylindrical rollers to ride on. They ensure smooth operation, reduced friction, and increased load-carrying capacity in various industrial applications, such as automotive, aerospace, and manufacturing equipment.
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#318094
NA 4901
SKF NA 4901 is a 12mm bore needle roller bearing with a machined cage. This bearing has a single row of rollers and is designed for high radial load capacity in a compact cross-section. Suitable for gearboxes, pumps, and automotive applications.
Brand SKF Bearing
Model NA 4901
$58.42 Each
Free shipping
#318100
NA 4904
SKF NA 4904 is a 20mm bore needle roller bearing with a machined cage. This bearing has a compact cross-section for high radial load capacity in limited space. Suitable for gearboxes, pumps, and machine tools.
Brand SKF Bearing
Model NA 4904
$72.68 Each
Free shipping
#318109
NA 4908.2RS
The SKF NA 4908.2RS is a 40mm bore needle roller bearing with double contact seals. It features a machined cage and is designed for high radial load capacity in compact spaces. Suitable for gearboxes, pumps, and industrial machinery.
Brand SKF Bearing
Model NA 4908.2RS
$169.73 Each
Free Shipping orders over $100
#318112
NA 4910.2RS
SKF NA 4910.2RS is a 50mm bore needle roller bearing with double contact seals. It features a machined cage and is designed for high radial load capacity in compact spaces. Suitable for gearboxes, pumps, and industrial machinery.
Brand SKF Bearing
Model NA 4910.2RS
$189.18 Each
Free Shipping orders over $100
#318120
NA 6902
SKF NA 6902 is a 15mm bore needle roller bearing with a machined cage. This bearing features a full complement of rollers for high radial load capacity in a compact cross-section. Suitable for gearboxes, pumps, and machine tools where space is limited.
Brand SKF Bearing
Model NA 6902
$92.24 Each
Free shipping
#318121
NA 6905
SKF NA 6905 is a 25mm bore needle roller bearing with a machined cage. This bearing features a full complement of rollers for high radial load capacity in a compact cross-section. Suitable for applications with limited radial space such as gearboxes and pumps.
Brand SKF Bearing
Model NA 6905
$164.30 Each
Free Shipping orders over $100
#318125
NA 6909
SKF NA 6909 is a 45mm bore needle roller bearing with a machined cage. This bearing features a single row of rollers and is designed for high radial load capacity in a compact cross-section. Suitable for gearboxes, pumps, and industrial machinery where space is limited.
Brand SKF Bearing
Model NA 6909
$222.05 Each
Free Shipping orders over $100
#318153
NKI 20/16
SKF NKI 20/16 is a 20mm bore needle roller bearing with a machined outer ring and no inner ring. It has a 32mm OD and 16mm width, designed for high radial load capacity in compact spaces. Suitable for gearboxes, pumps, and automotive applications.
Brand SKF Bearing
Model NKI 20/16
$51.04 Each
Free shipping
#318158
NKI 25/30
SKF NKI 25/30 is a 25mm bore needle roller bearing with a 30mm width. This single-row caged needle roller bearing offers high radial load capacity in a compact cross-section. Suitable for applications with limited radial space such as gearboxes, pumps, and automotive transmissions.
Brand SKF Bearing
Model NKI 25/30
$72.39 Each
Free shipping
#318159
NKI 32/20
SKF NKI 32/20 is a 32mm bore needle roller bearing with a 45mm outer diameter and 20mm width. This single-row caged needle roller bearing has a machined cage and is designed for high radial load capacity in compact spaces. Suitable for gearboxes, pumps, and automotive transmissions.
Brand SKF Bearing
Model NKI 32/20
$69.70 Each
Free shipping
#318266
NA 6901
SKF NA 6901 is a 12mm bore needle roller bearing with a machined cage. This bearing features a single row of needle rollers for high radial load capacity in a compact cross-section. Suitable for applications with limited radial space such as gearboxes and pumps.
Brand SKF Bearing
Model NA 6901
$105.34 Each
Free Shipping orders over $100
#318267
NA 6903
SKF NA 6903 is a 17mm bore needle roller bearing with a machined cage. This bearing features a full complement of rollers for high radial load capacity in a compact cross-section. Suitable for applications with limited radial space such as gearboxes and pumps.
Brand SKF Bearing
Model NA 6903
$98.12 Each
Free shipping
#318268
NA 6904
SKF NA 6904 is a 20mm bore needle roller bearing with a machined cage. Designed for high radial load capacity in compact spaces, it is suitable for gearboxes, pumps, and industrial machinery.
Brand SKF Bearing
Model NA 6904
$149.76 Each
Free Shipping orders over $100
#318273
NA 6912
SKF NA 6912 is a 60mm bore needle roller bearing with a machined cage. This bearing features a full complement of needle rollers for high radial load capacity in a compact cross-section. Suitable for applications with limited radial space such as gearboxes and pumps.
Brand SKF Bearing
Model NA 6912
$327.68 Each
Free Shipping orders over $100
#860739
IRT1216
IKO Bearing IRT1216 Inner Ring, Metric, 12 mm Inside Diameter, 15 mm Outside Diameter, 16.5 mm Width, For Shell Type, High Carbon Steel, To Assemble with TLA1516Z
Brand IKO Bearing
Model IRT1216
$7.08 Each
Free shipping
#860841
LRT121612
IKO Bearing LRT121612 Inner Ring, Metric, 12 mm Inside Diameter, 16 mm Outside Diameter, 12 mm Width, General Usage, High Carbon Steel, To Assemble with RNAF162812
Brand IKO Bearing
Model LRT121612
$8.18 Each
Free shipping
#860954
IRB612
IKO Bearing IRB612 Inner Ring, Inch , 3/8" Inside Diameter, 9/16" Outside Diameter, 19.43 mm Width, For Shell Type, High Carbon Steel, To Assemble with BA912Z and YB912
Brand IKO Bearing
Model IRB612
$9.61 Each
Free shipping
#861149
IRB168-1
IKO IRB168-1 IRB - SERIES
Brand IKO Bearing
Model IRB168-1
$12.30 Each
Free shipping
#861301
IRB1620
IKO Bearing IRB1620 Inner Ring, Inch , 1" Inside Diameter, 1 1/4" Outside Diameter, 32.13 mm Width, For Shell Type, High Carbon Steel, To Assemble with BA2020Z and BHA2020Z
Brand IKO Bearing
Model IRB1620
$14.63 Each
Free shipping
#861419
IRT4520
IKO Bearing IRT4520 Inner Ring, Metric, 45 mm Inside Diameter, 50 mm Outside Diameter, 20.5 mm Width, For Shell Type, High Carbon Steel, To Assemble with TA5020Z and TLA5020Z
Brand IKO Bearing
Model IRT4520
$16.70 Each
Free shipping
#862211
WS80105
IKO Bearing WS80105 Inner Ring for Thrust Roller Bearing, Metric, 80 mm Inside Diameter, 105 mm Outside Diameter
Brand IKO Bearing
Model WS80105
$46.25 Each
Free shipping
#862369
IRB4020
IKO Bearing IRB4020 Inner Ring, Inch , 2 1/2" Inside Diameter, 2 3/4" Outside Diameter, 32.13 mm Width, For Shell Type, High Carbon Steel, To Assemble with BA4420Z
Brand IKO Bearing
Model IRB4020
$47.32 Each
Free shipping
#862410
LRB526032
IKO Bearing LRB526032 Inner Ring, Inch, 3 1/4" Inside Diameter, 3 3/4" Outside Diameter, 51.050 mm Width, General Usage, High Carbon Steel, With Oil Hole , To Assemble with BR607632
Brand IKO Bearing
Model LRB526032
$62.01 Each
Free shipping
#862484
IRT5550
IKO Bearing IRT5550 Inner Ring, Metric, 55 mm Inside Diameter, 65 mm Outside Diameter, 50.5 mm Width, For Shell Type, High Carbon Steel, To Assemble with TAW6550Z
Brand IKO Bearing
Model IRT5550
$51.19 Each
Free shipping
#862602
IRB4016
IKO Bearing IRB4016 Inner Ring, Inch , 2 1/2" Inside Diameter, 2 3/4" Outside Diameter, 25.78 mm Width, For Shell Type, High Carbon Steel, To Assemble with BA4416Z
Brand IKO Bearing
Model IRB4016
$55.86 Each
Free shipping
#862609
IRT6050
IKO Bearing IRT6050 Inner Ring, Metric, 60 mm Inside Diameter, 70 mm Outside Diameter, 50.5 mm Width, For Shell Type, High Carbon Steel, To Assemble with TAW7050Z
Brand IKO Bearing
Model IRT6050
$56.08 Each
Free shipping
#863128
LRT11012030
IKO Bearing LRT11012030 Inner Ring, Metric, 110 mm Inside Diameter, 120 mm Outside Diameter, 30 mm Width, General Usage, High Carbon Steel, To Assemble with RNA4822
Brand IKO Bearing
Model LRT11012030
$102.81 Each
Free Shipping orders over $100
#863413
LRT12013545
IKO Bearing LRT12013545 Inner Ring, Metric, 120 mm Inside Diameter, 135 mm Outside Diameter, 45 mm Width, General Usage, High Carbon Steel, To Assemble with RNA4924
Brand IKO Bearing
Model LRT12013545
$147.80 Each
Free Shipping orders over $100
#863791
WS140195
IKO Bearing WS140195 Inner Ring for Thrust Roller Bearing, Metric, 140 mm Inside Diameter, 195 mm Outside Diameter
Brand IKO Bearing
Model WS140195
$382.26 Each
Free Shipping orders over $100
#1496608
IR-1216
Koyo IR-1216 solid race inner ring for drawn cup needle roller bearings. Features a 0.75" inner diameter, 1" outer diameter, and 1.015" width. Precision-ground raceway for reliable needle guidance in compact radial applications.
Brand Koyo Bearing
Model IR-1216
$18.40 Each
Free shipping
#1496624
IR-141820
Koyo IR-141820 solid race inner ring for needle roller bearings. Bore 22.225 mm (0.875 in), outside diameter 1.125 in, width 1.25 in. Precision-ground raceway for drawn cup needle roller bearings. Used in gearboxes, pumps, and industrial machinery requiring a separable inner race.
Brand Koyo Bearing
Model IR-141820
$16.05 Each
Free shipping
#1496663
IR-2424
Koyo IR-2424 solid race inner ring for drawn cup needle roller bearings. Features a 1.5" inner diameter, 1.75" outer diameter, and 1.515" width. Precision-ground raceway provides a hardened surface for needle rollers in compact radial applications.
Brand Koyo Bearing
Model IR-2424
$38.51 Each
Free shipping
#1496667
IR-243220
Koyo IR-243220 is a solid race inner ring for needle roller bearings with a 38.100 mm bore, 2 inch outside diameter, and 1.25 inch width. Features an oil hole for lubrication. Precision-ground raceway for smooth needle roller operation in industrial gearboxes and machinery.
Brand Koyo Bearing
Model IR-243220
$26.32 Each
Free shipping
#1496694
IR-485632
Koyo IR-485632 solid race inner ring for needle roller bearings with a 76.200 mm bore, 3.5 inch outer diameter, and 2 inch width. Features an oil hole for lubrication. Precision-ground raceway for use with drawn cup or machined ring needle roller bearings.
Brand Koyo Bearing
Model IR-485632
$67.96 Each
Free shipping
#2068854
NKI 25/20 TN
SKF NKI 25/20 TN is a 25mm bore needle roller bearing with a 33mm outer diameter and 20mm width. It features a glass-fiber-reinforced polyamide cage (TN) for low friction and high-speed capability. This single-row caged needle roller bearing is designed for compact radial load applications in gearboxes, pumps, and automotive transmissions.
Brand SKF Bearing
Model NKI 25/20 TN
$58.59 Each
Free shipping
#2068856
NKI 30/30 TN
The SKF NKI 30/30 TN is a 30mm bore needle roller bearing with a 30mm width. It features a glass-fiber-reinforced polyamide cage (TN) for low friction and high-speed capability. This single-row, non-locating bearing is designed for compact radial load applications in gearboxes, pumps, and industrial machinery.
Brand SKF Bearing
Model NKI 30/30 TN
$64.03 Each
Free shipping
#2165277
IR10X14X12
INA IR10X14X12 Inner ring
Brand INA Bearing
Model IR10X14X12
$9.02 Each
Free shipping
#2165323
IR17X22X23
INA IR17X22X23 Inner ring
Brand INA Bearing
Model IR17X22X23
$13.56 Each
Free shipping
#2250996
MI 12 BULK
The McGill MI 12 BULK is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 12 BULK
$69.21 Each
Free shipping
#2250998
MI 13
The McGill MI 13 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 13
$17.49 Each
Free shipping
#2251004
MI 16
The McGill MI 16 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, it allows the assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 16
$15.25 Each
Free shipping
#2251006
MI 16 N
The McGill MI 16 N is a precision-ground needle roller inner race of size 16 with an alternate width variant. Built from 52100 bearing steel, this inner ring is designed for use with CAGEROL (MR series) and GUIDEROL (GR series) outer assemblies. Sold individually to allow the bearing assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 16 N
$13.92 Each
Free shipping
#2251009
MI 18
The McGill MI 18 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, it allows the assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 18
$18.83 Each
Free shipping
#2251016
MI 21
The McGill MI 21 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, it allows the assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 21
$33.12 Each
Free shipping
#2251019
MI 22 BULK
The McGill MI 22 BULK is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 22 BULK
$113.95 Each
Free Shipping orders over $100
#2251021
MI 23
The McGill MI 23 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 23
$28.69 Each
Free shipping
#2251039
MI 35
The McGill MI 35 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 35
$66.87 Each
Free shipping
#2251040
MI 36
The McGill MI 36 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 36
$34.94 Each
Free shipping
#2251041
MI 36 N
The McGill MI 36 N is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, this alternate-width variant (N suffix) provides a hardened running surface when the shaft cannot serve as the raceway.
Brand McGill Bearing
Model MI 36 N
$38.09 Each
Free shipping
#2251044
MI 40
The McGill MI 40 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 40
$34.82 Each
Free shipping
#2251045
MI 40 N
The McGill MI 40 N is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, this alternate-width variant (N suffix) provides a hardened running surface when the shaft cannot serve as the raceway.
Brand McGill Bearing
Model MI 40 N
$46.56 Each
Free shipping
#2251049
MI 47
The McGill MI 47 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, it allows the assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 47
$89.94 Each
Free shipping
#2251051
MI 48 N
The McGill MI 48 N is a precision-ground needle roller inner race of size 48 with an alternate width variant. Built from 52100 bearing steel, this inner ring is designed for use with CAGEROL (MR series) and GUIDEROL (GR series) outer assemblies. Sold individually to allow the bearing assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 48 N
$73.23 Each
Free shipping
#2251055
MI 56
The McGill MI 56 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, it allows the assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 56
$74.00 Each
Free shipping
#2251062
MI 62
The McGill MI 62 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel, it allows the assembly to run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 62
$129.92 Each
Free Shipping orders over $100
#2251570
MI 80
The McGill MI 80 is a precision-ground inner race for use with CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Built from 52100 bearing steel. Sold individually so the assembly can run on a hardened ground shaft when one is unavailable.
Brand McGill Bearing
Model MI 80
$437.23 Each
Free Shipping orders over $100
#5215719
IR1332
Berliss IR1332 - Solid Inner Race, 60 mm Inside Dia, 2-3/4 in Outside Dia, 4-1/2 in Overall Width
Brand Berliss
Model IR1332
$323.41 Each
Free Shipping orders over $100
#5215778
IR209
Berliss IR209 - Solid Inner Race, 1.771 in Inside Dia, 2-3/16 in Outside Dia, 1-1/8 in Overall Width
Brand Berliss
Model IR209
$98.29 Each
Free shipping
#5215996
WIR222
Berliss WIR222 - Solid Inner Race, 4.33 in ID, 5-1/4 in OD, 3-1/2 in Overall Width
Brand Berliss
Model WIR222
$424.50 Each
Free Shipping orders over $100
#5831594
IR 60X70X25
SKF IR 60X70X25 is a needle roller bearing inner ring with a 60mm bore, 70mm outer diameter, and 25mm width. This inner ring is designed for use with needle roller and cage assemblies in applications requiring high radial load capacity in a compact cross-section.
Brand SKF Bearing
Model IR 60X70X25
$67.21 Each
Free shipping