Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
SKF N230EM/NJ230EM/NU230EM/N232EM/NJ232EM Cylindrical Roller Bearings – High-Precision, Heavy-Duty
Basic Info
| Inner Diameter | 170 mm |
| Outer Diameter | 310 mm |
| Width | 52 mm |
| Model | NU234EM |
| Type | Cylindrical Roller Bearing |
| Material | Bearing Steel |
Introduction
High-precision cylindrical roller bearing (NU234EM), made of premium bearing steel, designed for heavy radial loads. Features open seal, oil/grease/dry lubrication options, and precision grades from P0 to P2. Dimensions: 170×310×52 mm. Ideal for industrial OEM/ODM applications.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
SKF Cylindrical Roller Bearings – High-Precision, Heavy-Duty Radial Solutions
| Description | Key Selling Points |
|---|---|
| Model Range: NU234EM, N230EM, NJ230EM, NU230EM, N232EM, NJ232EM | Interchangeable high-precision cylindrical designs for OEM flexibility and global standard compliance (ISO/DIN) |
| Dimensions: 170×310×52 mm (spec.); outer diam. 35–400 mm | Wide size coverage — ideal for industrial gearboxes, motors, pumps & wind turbines |
| Material: Premium bearing steel (GCr15 equivalent), hardened & ground | Extended fatigue life & superior dimensional stability under heavy radial loads |
| Load Capacity: Pure radial, high-speed capable | Optimized roller-cage design ensures low friction, minimal heat generation, and >20% higher dynamic load vs. standard P0 |
| Precision Grades: P0 / P6 / P5 / P4 / P2 | Factory-certified tolerances — P4/P2 available for precision machine tools & aerospace applications |
| Sealing & Lubrication: Open type; compatible with oil, grease, or dry-film lubricants | Easy maintenance + adaptable to harsh or clean-room environments |
| Separable Design: Inner/outer rings & rollers independently mountable | Simplifies installation & servicing in tight spaces — reduces downtime |
| Origin & Quality: Manufactured in Sweden; ISO 9001 & IATF 16949 certified | Traceable batch documentation & 100% final inspection guarantee reliability |
| Differentiator: EM-series = enhanced internal geometry + optimized surface finish | Up to 35% longer service life vs. generic cylindrical bearings (per SKF L10 life testing) |
| FAQ: Can NU234EM replace NJ234EM? → Yes, but NJ offers fixed-locating capability; NU is floating. Max speed? → Up to 3,200 rpm (oil-lubricated, P6 grade). | Need custom specs or bulk OEM pricing? Send your inquiry now — our SKF-certified engineers reply within 2 business hours. |
Product Summary
- Product Name
- SKF N230EM/NJ230EM/NU230EM/N232EM/NJ232EM Cylindrical Roller Bearings – High-Precision, Heavy-Duty
- 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
SKF N230EM/NJ230EM/NU230EM/N232EM/NJ232EM Cylindrical Roller Bearings – High-Precision, Heavy-Duty
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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