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Koyo JR25X30X20,5 solid race inner ring for needle roller bearings. Features a 25 mm bore, 30 mm outer diameter, and 20.5 mm width. Precision-ground raceway for use with drawn cup or machined ring needle roller bearings. Suitable for general industrial applications requiring a separable inner race.
MODEL JR25X30X20,5
$14.39 Each
Prices are subject to change
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Bearing Design
Removable Inner Ring Straight
I.D.
25 mm
O.D.
30 mm
Oil Hole
w/o Oil Hole
Precision Ground
Yes
Width
20 mm
When it is impractical to meet the shaft raceway design requirements (hardness, surface finish, case depth, etc.) outlined in the engineering section of this catalog, standard inner rings may be used. Inner rings are made of rolling bearing steel and after hardening, their bores, raceways and end surfaces are ground. Metric series inner rings may be used to provide inner raceway surfaces for metric series radial needle roller and cage assemblies, metric series needle roller bearings and metric series drawn cup needle roller bearings. The extended inner rings are suitable for use with bearings containing lip contact seals and for applications in which axial movement may be present.
.Without lubrication holeHow do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
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