NTN N2311EM Cylindrical Roller Bearing – High Precision, Japan Made
Basic Info
| Bore Diameter | 15–90 mm |
|---|---|
| Outer Diameter | 35–180 mm |
| Width/Thickness | 43 mm |
| Structure | Cylindrical Roller |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Introduction
Cylindrical roller bearing 307 (model NUP2311EM), made of high-grade bearing steel, offers high radial load capacity and precision ratings from P0 to P2. Designed for OEM/ODM applications, it features separated construction and standard dimensions 55×120×43 mm.
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Description
NTN Japan-Made High-Precision Cylindrical Roller Bearings (NUP2311EM Series)
| Description | Key Value |
|---|---|
| Precision & Origin | Japan-made, P0–P2 precision grades (ISO/JIS), superior dimensional stability vs. generic China-made |
| Bearing Type | NUP series — fixed double-flanged outer ring + loose inner ring; enables axial location + high radial load capacity |
| Dimensions (mm) | 55 × 120 × 43 (Bore × OD × Width); fits standard 55mm shafts in industrial gearboxes & motors |
| Material & Hardness | High-carbon chromium bearing steel (SUJ2/GCr15), heat-treated to HRC 60–64 for extended fatigue life |
| Lubrication Flexibility | Pre-greased or oil-lubricated compatible; sealed variants available upon request |
| Vibration Control | Z2V2 / Z3V3 low-noise grade options — ideal for precision machine tools and servo-driven systems |
| Separability | Fully separable design — simplifies mounting, maintenance, and replacement in tight spaces |
| Load Capacity | Optimized for heavy radial loads + limited bidirectional axial thrust (NUP configuration) |
| Quality Assurance | 100% ISO 9001-certified production; batch-tested for vibration, clearance, and surface finish |
| Typical Applications | Industrial gearboxes, wind turbine yaw/pitch systems, mining conveyors, CNC lathes, paper mills |
Why choose NTN NUP2311EM over alternatives? Unlike generic cylindrical rollers, it delivers Japan-engineered consistency, tighter tolerances (±1.5μm bore runout), and proven reliability at 15,000+ hr L10 life under rated load. BDL-branded but manufactured under NTN’s strict OEM protocols — no compromise on metallurgy or process control.
FAQ: Q: Is this interchangeable with SKF NJ2311E? A: Yes — identical boundary dimensions & load ratings; NTN offers better thermal stability above 120°C. Q: Can you supply P4 precision? A: Yes — lead time +2 weeks. Q: Are samples available? A: Yes — free sample (1 pc) with freight collect.
Ready to verify performance in your application? Send your inquiry now — our SKF-trained engineers will recommend the optimal variant (seal type, cage material, lubricant, precision grade) and provide full test reports.
