Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
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.7
Day Prototype
vs. 8-12 wks standard
50+
Countries Served
Global logistics network
12h
Quote Response
Expert engineers on call
Typical Applications
Wind Power
Mining
Steel & Metallurgy
Automotive / EV
Rail Transit
Precision Machinery
Genuine SKF Bearings
NDA Protected
Free Sample for Orders > $50K
Global Shipping
Product Details
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.
Product Summary
- Product Name
- High Precision N309EM Cylindrical Roller Bearings – China Factory
- Category
- Cylindrical Roller Bearing
- Brand
- SKF
- Certification
- ISO 9001 · TS 16949
- Lead Time
- 7 Working Days
Get a Custom Quote
Our engineers will respond within 12 hours with a tailored solution.
Request QuoteGeneral Specifications
| Bearing Type | Cylindrical Roller Bearing |
| Brand | SKF |
| Quality Standard | ISO 9001 / TS 16949 |
| Precision Grade | P0 / P5 / P6 (custom) |
| Material | Chrome Steel / Stainless |
| Cage Material | Steel / Brass / Polyamide |
| Lubrication | Grease / Oil (specify) |
| Operating Temp. | -40°C to +200°C |
| Min. Order Qty | 1 pc (samples available) |
| Prototype Lead Time | 7 Working Days |
Performance Parameters
| Load Capacity | Contact for C0/Cr values |
| Speed Rating | Contact for ndm limit |
| Vibration Level | Z1 / Z2 / Z3 (custom) |
| Noise Level | V1 / V2 / V3 (custom) |
| Fatigue Life | L10h per ISO 281 |
| Sealing Options | Open / Z / 2Z / RS / 2RS |
Custom Specifications Available
Our engineering team can modify bearing dimensions, materials, seals, and clearances to meet your specific operating requirements. Submit your drawing or spec sheet for a tailored proposal.
Wind Power
Main shaft bearings, gearbox bearings, and generator bearings for onshore and offshore wind turbines.
Mining & Quarrying
Heavy-duty bearings for crushers, conveyors, and rotary equipment in extreme dust and shock-load environments.
Steel & Metallurgy
High-temperature bearings for rolling mills, continuous casting, and furnace applications.
Automotive / EV
Wheel hub bearings, transmission bearings, and e-motor bearings for passenger and commercial vehicles.
Rail Transit
Axle box bearings, traction motor bearings, and gearbox bearings meeting EN/UIC railway standards.
Precision Machinery
High-precision spindle bearings, angular contact bearings, and super-precision bearings for CNC and robotics.
Application Design
EngineeringOur engineers analyze your operating conditions -- load, speed, temperature, environment -- and select or design the optimal bearing solution to maximize service life and reduce total cost of ownership.
Custom Modification
7-Day TurnaroundNeed non-standard dimensions, special materials, or modified clearances? We can modify standard SKF bearings or manufacture fully custom solutions with a 7-day prototype turnaround.
Failure Analysis
DiagnosticsWhen bearings fail prematurely, our team conducts root-cause analysis using advanced diagnostic tools to identify the failure mode and recommend corrective action.
Predictive Maintenance
Up to 40% Less DowntimeWe deploy vibration monitoring, thermal imaging, and oil analysis programs that detect bearing deterioration early -- reducing unplanned downtime by up to 40%.
On-site Installation
Global CoverageProper installation is critical to bearing performance. Our certified technicians provide on-site installation support, alignment verification, and operator training worldwide.
Lifecycle Support
Enterprise SLAFrom initial selection through end-of-life, our dedicated account managers provide scheduled maintenance plans, re-lubrication programs, and replacement forecasting for enterprise clients.
Why SKF China
The engineering partner advantage
7 Days
Prototype Lead Time
vs. 8-12 weeks via standard channels
15+
Certified Engineers
SKF-certified, on-call for your project
50+
Countries Delivered
Reliable global logistics network
Request a Quote
Get a custom quote for
High Precision N309EM Cylindrical Roller Bearings – China Factory
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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