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Koyo IR-445228 solid race inner ring for needle roller bearings. Features a 69.850 mm bore, 69.85 in outside diameter, and 1.75 in width. Includes an oil hole for lubrication. Designed for use with drawn cup or machined ring needle roller bearings in industrial applications.
MODEL IR-445228
$59.88 Each
Prices are subject to change
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Returnable: See conditions
Bearing Design
Removable Inner Ring Straight
I.D.
2 3/4 in
O.D.
3 1/4 in
Oil Hole
w/Oil Hole
Precision Ground
Yes
Width
1 3/4 in
- Best used with our solid race needle roller bearings (HJ) to provide a hardened and properly toleranced inner race
- May also be used as a wear bushing
- Made from premium high carbon high chromium steel
- An oil hole and groove are standard for all 6-digit inner rings
How 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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