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HK, BK, NK, NKI, NA, RNA, RNAO, NA69, RNA69, NAV, RNAV, K, AXK, STO, NATV, NUTR, IR, LR
BWK needle roller bearings combine high radial load capacity with a compact cross-section. Their long, small-diameter rollers make them suitable for bearing arrangements where installation space is limited but reliable load support is still required.
The BWK range includes radial needle roller bearings, drawn cup bearings, full complement designs, double-row bearings, needle roller and cage assemblies, thrust needle roller bearings, track rollers and precision inner rings.
| Product Type | Representative Series | Main Features |
Needle Roller Bearings without Inner Ring | NK, RNA, RNAO | The prepared shaft serves directly as the raceway, reducing radial installation space. |
Needle Roller Bearings with Inner Ring | NKI, NA, NAO | Suitable where the shaft cannot be hardened and ground as a raceway. |
Double-Row Needle Roller Bearings | NA69, RNA69 | Two roller rows provide increased radial load capacity and rigidity. |
Full Complement Needle Roller Bearings | NAV, RNAV, NAVP, RNAVP | More rollers and no conventional cage provide high load capacity at low to moderate speeds. |
Drawn Cup Needle Roller Bearings | HK, BK, HK-RS, HK-2RS | A thin-walled stamped outer ring provides a compact and lightweight arrangement. |
Needle Roller and Cage Assemblies | K, AXK, NTA | Compact roller-and-cage assemblies designed for prepared shaft and housing raceways. |
Yoke Type Track Roller Bearings | STO, NATV, NATR, NUTR, NA22, RNA22 | Thick outer rings designed for tracks, cams and guide systems. |
Needle Roller Bearing Inner Rings | IR, LR | Precision raceway rings used where the shaft surface is unsuitable as a raceway. |
High radial load capacity within a small radial cross-section
Multiple structures for prepared or non-prepared shaft raceways
Open, sealed, caged and full complement configurations
Standard metric series and special replacement designs
Support for OEM marking, packaging and customized requirements
Needle roller bearings are widely used in gearboxes, transmissions, agricultural machinery, machine tools, printing equipment, pumps, compressors, conveying systems, automation equipment and other compact industrial mechanisms.
For accurate selection, please provide the existing bearing number, dimensions, drawing or sample photo, load direction, operating speed, shaft and housing conditions, lubrication method and sealing requirements.
When a shaft or housing is used directly as a raceway, its hardness, machining accuracy and surface finish must also be confirmed.
Send BWK your bearing number, dimensions, drawing or application details. Our team will help confirm the suitable structure, series and replacement option.
BWK provides reliable bearing solutions for industrial and agricultural applications, supported by stable supply, strict quality control and flexible OEM & ODM services.
