Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
NSK KOYO N203EM Cylindrical Roller Bearing, High Precision
Basic Info
| Inner Diameter | 17 mm |
|---|---|
| Outer Diameter | 40 mm |
| Width | 16 mm |
Introduction
Cylindrical roller bearing NUP203EM, made of bearing steel, radial load type, open seal, single row, precision grades P0–P2. Suitable for OEM/ODM applications. Lubrication: oil, grease or dry. Outer dimension range: 35–400 mm. 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
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Free Sample for Orders > $50K
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Product Details
NSK Koyo NUP203EM Cylindrical Roller Bearing – High-Precision Radial Solution
| Description | Key Value |
|---|---|
| Precision & Grade | P0–P2 (ABEC-1 to ABEC-9 equivalent), ultra-low vibration, ideal for high-speed spindles |
| Dimensions (mm) | 17 × 40 × 16 — compact yet robust radial load capacity |
| Material | High-carbon chromium bearing steel (GCR15/SAE52100), vacuum-melted & heat-treated |
| Load Capacity | Radial-only, high rigidity, optimized for heavy-duty industrial rotation |
| Design Type | NUP (fixed axial location on both sides), non-aligning, separated for easy mounting |
| Seal & Lubrication | Open design — compatible with oil, grease, or dry-film lubricants |
| Applications | Machine tools, gearboxes, pumps, compressors, textile & automotive equipment |
| Quality Assurance | 100% ISO 9001 & IATF 16949 certified; batch-tested for noise, torque & dimensional accuracy |
| Differentiator vs. Generic Brands | Japanese engineering standards + Chinese cost efficiency — 30% longer L10 life vs. standard P0 |
| FAQ: Can it replace SKF NU203 or NJ203? | Yes — identical ISO dimensions & interchangeability; enhanced cage design improves fatigue resistance |
Engineered for reliability where precision meets performance — the NUP203EM delivers unmatched radial stiffness and thermal stability in demanding environments. Trusted by OEMs across Asia and Europe, this bearing combines NSK/Koyo’s decades of rolling element expertise with strict QC control. Unlike budget alternatives, its hardened raceways and optimized roller profile reduce micro-pitting and extend service intervals. Ready for immediate integration? Get your technical datasheet and bulk pricing now — send an inquiry today!
Product Summary
- Product Name
- NSK KOYO N203EM Cylindrical Roller Bearing, High Precision
- 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
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NSK KOYO N203EM Cylindrical Roller Bearing, High Precision
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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