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Koyo NA4824 is a machined ring needle roller bearing with a 120 mm bore, 150 mm OD, and 30 mm width. It features an open-type solid race design without inner ring, suitable for compact radial load applications in gearboxes and industrial machinery.
MODEL NA4824
$451.69 Each
Prices are subject to change
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Returnable: See conditions
Bearing Design
Removable Inner Ring Straight
I.D.
120 mm
Inner Ring O.D.
130 mm
Limiting Speed - Oil
3200 rpm
O.D.
150 mm
Oil Hole
w/Oil Hole
Origin
Needle Radial
Precision Ground
Yes
Self Aligning
No
Width
30 mm
- Best used for high radial load applications
- Made from premium high carbon high chromium Japanese steel
- Available with no inner ring (NK NKS RNAO RNA2200 RNA48
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.