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KO Cylindrical Roller Bearings
NU, NJ, NUP series cylindrical roller bearings for high radial rigidity. Optimized for gearboxes, electric motors, machine tool spindles, and heavy-load industrial drives.
Cylindrical Roller Bearings
Cylindrical roller bearings use line contact between rollers and raceways and are commonly considered where radial load, rigidity, a separable arrangement, or axial displacement within the bearing matters. Confirm the exact NU, N, NJ, NUP, or other design against the load, speed, fit, clearance, and locating function.
Series Overview
| Series | Configuration | Axial Load | Typical Use |
|---|---|---|---|
| NU | Two ribs on outer ring, no ribs on inner | Axial displacement both directions | Non-locating position |
| NJ | Two ribs on outer, one rib on inner | One direction only | Locating position |
| NUP | Two ribs on outer, one rib + loose rib on inner | Both directions (limited) | Locating position |
Key Advantages
- Radial-load design: Line contact supports substantial radial load when the selected series, size, and internal geometry fit the duty
- Friction and heat: Compare the published speed rating, lubricant, clearance, fit, and thermal conditions for the selected model
- Speed review: Confirm the exact model rating and lubrication method against the operating speed
- Separable design: Inner and outer rings can be mounted independently, simplifying assembly
- Brand-reference review: ISO boundary dimensions may support comparison with major brands, but locating function, suffix, tolerance, and application must be checked
Applications
- Gearboxes: High-speed and low-speed shafts
- Electric motors: Medium and large frame sizes
- Machine tools: Spindle support bearings
- Pumps and compressors: Rotor support
- Steel mill rolls: Backup and work roll bearings
Information for a Cylindrical Roller Bearing Enquiry
For brand comparison or replacement, send the NU/NJ/NUP type, full model number, internal clearance, shaft role, load, speed, quantity, and destination. We can compare suitable China supply options and confirm the required documents, packing, and shipment plan.
Request a Cylindrical Roller Series Quote
Send the full specification, drawing, quantity, destination, and required documents. We will confirm the selected configuration, availability, and timing in the quotation.