Description
NSK KOYO NUP203EM Cylindrical Roller Bearing – High-Precision Radial Solution
| Description | Key Spec / USP |
|---|---|
| Ultra-Precise Radial Load Capacity | P0–P2 precision grades; ideal for high-speed spindles & gearboxes |
| Robust Bearing Steel Construction | Chrome steel (GCr15) with strict heat treatment per ISO 634/ISO 281 |
| Optimized Internal Geometry | NUP-type fixed-locating design: inner ring double flange + outer ring single flange + loose rib |
| Low-Friction, High-Efficiency Operation | Ground rollers & raceways ensure <0.002mm form tolerance and minimal torque variation |
| Open Design for Flexible Lubrication | Compatible with oil, grease, or dry-film lubricants — no seal drag loss |
| Global Brand Compatibility | Cross-interchangeable with SKF, NTN, Timken, and FAG equivalents (e.g., SKF NUP203E) |
| Wide Size Range & OEM Support | 17×40×16 mm standard; scalable to 35–400 mm OD; full OEM/ODM service available |
| Strict Quality Assurance | 100% dimensional inspection + noise testing + vibration screening (ISO 15242-3 compliant) |
| Industry-Proven Reliability | Used in CNC machines, wind turbines, industrial pumps, and automotive transmissions |
| Frequently Asked Questions | Q: Is this bearing suitable for axial loads? A: NUP203EM handles limited bi-directional axial loads due to its fixed-locating structure. For pure thrust, consider NU/NJ+NUP combos. |
Ready to source certified cylindrical roller bearings with fast lead times and technical support? Send your inquiry now — our engineers will respond within 2 hours with specs, CAD files, and competitive pricing.







