Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
China N228EM Cylindrical Roller Bearing – High-Load, Precision, Low-Friction
Product Specifications
| Inner Diameter | 140 mm |
| Outer Diameter | 250 mm |
| Width | 42 mm |
Introduction
Cylindrical roller bearing NUP228EM, made of bearing steel, single-row, open type, radial load capacity. Suitable for high-precision applications with P0–P2 precision ratings. Designed for oil, grease or dry lubrication. Manufactured in China under BDL brand.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 NUP228EM Cylindrical Roller Bearing
| Description | Core Value |
|---|---|
| High-Precision P0–P2 Rating | Ensures ultra-low vibration & extended service life in high-speed applications |
| 140×250×42 mm Metric Dimensions | Direct OEM replacement for major industrial gearboxes and motors |
| Bearing Steel (GCr15) Construction | Superior hardness, wear resistance & fatigue strength vs. standard carbon steel |
| Separated NUP Design | Enables easy axial location + independent adjustment of inner/outer rings |
| Radial Load–Optimized Cylindrical Rollers | Handles 30% higher radial loads than deep groove ball bearings of same size |
| Open Type (No Seals) | Compatible with custom lubrication — ideal for oil-bath or centralized grease systems |
| Non-Aligning, Rigid Structure | Delivers exceptional shaft rigidity in machine tool spindles & rolling mill stands |
| China-Origin, SKF-Compliant Manufacturing | ISO 9001 & ISO/TS 16949 certified production; 100% dimensional & noise tested |
| OEM/ODM Support + 100,000 Units/Month Capacity | Fast lead times, custom packaging, and full traceability (batch/heat code) |
| Applications: Wind Turbines, Cement Mills, Gear Reducers, Paper Machines | Proven performance under shock load, misalignment, and continuous duty cycles |
Frequently Asked Questions:
Q: Is this bearing interchangeable with original SKF NUP228EM?
A: Yes — fully compliant with SKF dimension, tolerance, and load rating standards (DIN 616 / ISO 15).
Q: What’s the max operating temperature range?
A: –30°C to +120°C (with standard lithium-based grease); up to +150°C with high-temp lubricants.
Q: Do you provide test reports?
A: Absolutely — every batch includes dimensional inspection, hardness verification, and dynamic load testing reports.
Product Summary
- Product Name
- China N228EM Cylindrical Roller Bearing – High-Load, Precision, Low-Friction
- 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
China N228EM Cylindrical Roller Bearing – High-Load, Precision, Low-Friction
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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