GQZ NK25/16 Needle Roller Bearing 25×33×16mm Without Inner‑Ring Compact High Radial Load Bearing
The NK25/16 single‑row machined‑ring needle roller bearing is designed without inner ring, two integrated flanges on outer ring for axial guidance, equipped with lubriion hole. Hardened and ground shaft surface acts directly as inner raceway. It delivers high radial load capacity with compact radial cross‑section, permits bidirectional axial displacement, suitable for compact low‑medium‑speed transmission mechanismsSKF 集....
It is widely used in gearboxes, textile machinery and general‑purpose compact mechanical shaft assemblies.
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- Model
- NK25/16
- Fw (Roller set bore)
- 25 mm
- Outer Diameter (OD)
- 33 mm
- Width
- 16 mm
- Structure
- Single‑row needle roller bearing, without inner ring, outer ring with flanges and lubriion hole
- Material
- GCr15 chrome bearing steel
- Cage
- Stamped steel cage
- r min
- 0.3 mm
- Precision Grade
- P0
- Approx Net Weight
- 0.038 kg
- Dynamic Load Cr
- 15100 N
- Static Load C0r
- 24500 N
- Limiting Speed(Grease)
- 18000 rpm
???? Full technical data and drawings available upon request
- No‑inner‑ring structure minimizes radial installation dimension for space‑limited housing layout
- Outer ring with integrated flanges provides reliable axial guidance for roller‑cage assembly
- Reserved lubriion hole facilitates convenient re‑lubriion during service cycle
- High radial load‑carrying capacity under compact overall envelope
- Shaft journal must be hardened and precision‑ground to serve as raceway surface
- Custom design available (sealed variant, special grease, OEM laser marking)
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This needle roller bearing is widely used in:
- Compact gearbox and reducer auxiliary transmission assemblies
- Textile equipment, packaging machinery and light‑duty automation devices
- Engineering machinery auxiliary mechanisms and material‑handling units
- Various compact mechanical equipment adopting hardened‑ground shaft journal
???? Ideal for customers looking for reliable and long‑life bearing solutions
- 25+ years experience in industrial machined‑ring needle roller bearing manufacturing
- Exported to 50+ countries worldwide
- Rich experience in OEM NK‑series needle roller bearing custom projects
- Strict dimensional tolerance, hardness and rotation performance inspection before shipment
- Fast response within 24 hours
- Stable supply for long‑term cooperation
???? We focus on quality, reliability, and long‑term partnership
- Raw material hardness inspection
- Precision grinding outer raceway machining
- Heat treatment metallurgy control
- Lubriion hole inspection, needle roller flexibility and rotation smoothness testing
- Final dimensional & appearance inspection before delivery
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Looking for a reliable bearing supplier?
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- Fast quotation within 24 hours
- Technical support from engineers
- Custom needle roller bearing matching solution suggestions
- Competitive factory price
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NK25/16 is without inner ring; shaft journal needs quenching and grinding treatment.
Standard needle roller bearings:7‑15 days
Custom special specifiion products: depending on specifiions
Yes, we provide stable supply for long‑term cooperation.
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