High Precision N309EM Cylindrical Roller Bearings – China Factory
Basic Info.
| Bore Diameter | 15–90 mm |
| Outer Diameter | 35–180 mm |
| Width/Thickness | 25 mm (spec. 45×100×25 mm) |
| Type | Cylindrical Roller Bearing |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Introduction
High-precision cylindrical roller bearing (Model NUP309EM), ideal for radial load applications. Made of premium bearing steel, with options for P0–P2 precision and Z1V1–Z3V3 vibration grades. Suitable for OEM/ODM use, shipped in carton/pallet packaging.
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Description
Why Choose Our High-Precision Cylindrical Roller Bearings?
| Description | Key Specification / USP |
|---|---|
| Precision & Grade | P0–P2 ultra-precision ratings — ideal for high-speed, low-vibration applications |
| Robust Material | High-carbon chromium bearing steel (GCr15), hardened to HRC 60–64 |
| Radial Load Capacity | Optimized NUP design with fixed double flange + loose rib — handles heavy radial + limited axial loads |
| Dimension Range | Bore: 15–90 mm | OD: 35–180 mm | e.g., standard size 45×100×25 mm |
| Lubrication Flexibility | Pre-greased or oil-lubricated — compatible with common industrial lubricants |
| Vibration Control | Z1V1–Z3V3 graded noise/vibration performance — meets ISO 15242-2 |
| Separable Design | Inner/outer rings separable — simplifies mounting, maintenance & OEM integration |
| Global Compliance | HS Code 8482500090; certified for CE, ISO 9001, and RoHS |
| OEM/ODM Ready | Custom branding (e.g., BDL), packaging, and specs — lead time from 7 days |
| Real-World Use | Wind turbines, gearboxes, mining conveyors, CNC spindles & railway axles |
Engineered for reliability under extreme loads and speeds, these cylindrical roller bearings outperform generic alternatives with tighter raceway tolerances, superior surface finish, and batch-tested vibration levels. Unlike standard P0 bearings, our P5/P4 variants reduce operational noise by up to 40% and extend service life by 2.3× in continuous-duty cycles.
FAQ: Are these interchangeable with SKF NUP309E? Yes — identical ABEC-1/P0 dimensions and load ratings; higher grades (P4/P2) exceed SKF’s standard tolerance. Do you supply test reports? Every batch includes dimensional, hardness, and vibration certificates. What’s the max operating temperature? Up to 120°C with lithium-complex grease.
Ready to specify or request a sample? Contact us today for technical support and volume pricing — our engineers respond within 2 business hours.
