Machinery & Equipment
Needle Roller Bearings
Description
Needle roller bearings are cylindrical roller bearings with rollers 3 to 10 times longer than diameter, offering high radial load capacity and low cross-section height, suitable for limited radial space. Types include outer ring with double ribs, with oil holes, without inner ring, with cage, etc., in inch and metric sizes.
Specifications
| type | Needle Roller Bearings |
| series | 48, 49, 59, 69, NKI, NKIS, NAO, RNA, NK, NKS, BR, BRI, RNAV, RNAO, BK, HK, TLA, SCE, BCE, SCH, BCH, K, KZK, KBK, IR, LR |
| cage material | Pressed steel (most), some without cages |
| outer ring type | Drawn-cup (pressed steel) or precision solid (machined) |
| rolling element | Cylindrical rollers |
| length/diameter ratio | 3 to 10 |
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