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Koyo HJ-445628 is an open type solid race needle roller bearing with a 44.45 mm bore, 88.9 mm OD, and 44.45 mm width. Designed for radial load applications requiring a compact cross-section with high load capacity. Suitable for use in gearboxes, pumps, and industrial machinery.
MODEL HJ-445628
$84.88 Each
Prices are subject to change
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Bearing Design
Outer Ring & Roller Assembly
Dynamic Load Rating
26300 lbf
Housing Bore - Loose Fit [MAX]
3.501 in
Housing Bore - Loose Fit [MIN]
3 1/2 in
Housing Bore - Tight Fit [MAX]
3 1/2 in
Housing Bore - Tight Fit [MIN]
3.498 in
Housing Shoulder Diameter
3.188 in
I.D.
2 3/4 in
Limiting Speed - Grease
4000 rpm
Limiting Speed - Oil
6200 rpm
O.D.
3 1/2 in
Oil Hole
w/Oil Hole
Origin
Needle Radial
Precision Ground
Yes
Self Aligning
No
Static Load Rating [MAX]
55100 lbf
Width
1 3/4 in
- Best used for high radial load applications
- Made from premium high carbon high chromium steel
- Uses hardened steel cage
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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