Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
N308EM Cylindrical Roller Bearing – High Precision, China Made
Basic Info.
| Bore Diameter | 15–90 mm |
| Outer Diameter | 35–180 mm |
| Width/Thickness | 23 mm (spec. 40×90×23 mm) |
| Material | |
| Type | Cylindrical Roller Bearing, Radial, Separated |
| Lubrication | Grease or Oil |
Cylindrical roller bearing NUP308EM, precision-rated P0–P2, vibration-class Z1V1–Z3V3. Ideal for high-load radial applications. Made of premium bearing steel, OEM/ODM supported. Origin: China. HS Code: 8482500090.
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
Key Specifications & Advantages of SKF-Grade Cylindrical Roller Bearings (NUP308EM Series)
| Description | Core Value |
|---|---|
| Model Range: N308EM, NJ308EM, NF308EM, NU308EM, NUP308EM | Interchangeable high-precision variants for flexible OEM integration |
| Bore × OD × Width: 40 × 90 × 23 mm (per spec) | Precise dimensional compliance with ISO 15 & DIN 620 standards |
| Material: Premium GCR15 Bearing Steel | Hardness HRC 60–64; fatigue life extended by 35% vs. standard grade |
| Precision Ratings: P0/P6/P5/P4/P2 | Ultra-tight tolerances for high-speed, low-vibration industrial applications |
| Vibration Grades: Z1V1 to Z3V3 | Optimized for CNC spindles, gearboxes & precision machinery |
| Lubrication: Grease or Oil Compatible | Pre-lubricated options available; extended service intervals |
| Radial Load Only • Non-Self-Aligning • Separable Design | Easy mounting/dismounting; ideal for fixed-position shafts |
| Origin: China (ISO 9001 & IATF 16949 Certified Factories) | Rigorous 100% dimensional & noise testing before shipment |
| OEM/ODM Support + Custom Marking (e.g., “SKF-Compatible”) | Seamless drop-in replacement for legacy SKF 308 series |
| FAQ: Are these genuine SKF? → No — but engineered to match SKF NUP308EM performance, interchangeability & lifetime under identical loads. | Backed by 12-month quality warranty and technical support |
Product Summary
- Product Name
- N308EM Cylindrical Roller Bearing – High Precision, China Made
- 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
N308EM Cylindrical Roller Bearing – High Precision, China Made
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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