Needle Roller Bearing Inner Rings

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Inner rings are made from hardened rolling bearing steel and have precision ground or machined raceways. Ideal applications for using inner rings include:

When in order to allow larger axial displacements of the shaft in relation to the housing, needle roller bearings must be combined with wider inner rings.
Where the shaft cannot be used as a raceway (such as for drawn cup needle roller bearings with open ends; drawn cup needle roller bearings with closed end; needle roller and cage assemblies; and needle roller bearings).
When optimal running surfaces are necessary in order to seal lips.

Needle roller bearings increase the capacity of the standard Pitchlign® SJ series from 10% to 40% while maintaining the standard SJ envelope dimensions. The TJ design gives the heavy duty needle roller bearing 37% to 200% greater life over a standard single pocket bearing. These bearings are also available in sealed and unsealed configurations.

Heavy duty needle roller bearings present a wide variety of designs. The TJ and SJ roller bearings can also be matched with an inner ring or run directly on a shaft.  inner rings can be used separately or as an inner race for complimentary SJ or TJ roller bearings. The inner rings range are through hardened and precision ground.

Bearing Number Bore Dia Outer DIa Width Size
Koyo NRB JR90X100X26 Needle Roller Bearing Inner Rings M6x1 0.58 kg 1.5 mm 27 mm
Koyo NRB JR80X90X35 Needle Roller Bearing Inner Rings 49.3 mm 33.4 mm F212N- 22 Nm
Koyo NRB JR75X85X30 Needle Roller Bearing Inner Rings Roller Follower Pin 12 7 Days None
Koyo NRB JR28X32X20 Needle Roller Bearing Inner Rings 9 mm 200 °C 11 mm US202G2T20
Koyo NRB JR70X80X25 Needle Roller Bearing Inner Rings 22 mm 9.55 kN M6x1 11 mm
Koyo NRB JR10X14X20 Needle Roller Bearing Inner Rings Available 6 [Aluminum Alloy] 201 Flange Type
Koyo NRB JR65X72X25 Needle Roller Bearing Inner Rings 100 °C 2.27 kg 19 mm 22 mm
Koyo NRB JR10X14X13 Needle Roller Bearing Inner Rings 35 mm 15 mm 0.04 kg 19 mm
Koyo NRB JR60X68X35 Needle Roller Bearing Inner Rings 253000 Square flange shape No J7
Koyo NRB JR6X9X16 Needle Roller Bearing Inner Rings Metric System Self-aligning roller Radial 240
Koyo NRB JR30X35X20,5 Needle Roller Bearing Inner Rings 76500 Single Row 9 Days or more Open Type
Koyo NRB JR25X30X20,5 Needle Roller Bearing Inner Rings 95 mm 38.9 mm 20 mm 48 mm
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