Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
NTN N2304EM Cylindrical Roller Bearing – High Precision, Japan-Made
Basic Info.
| Bore Size | 15–90 mm |
| Outer Dimension | 35–180 mm |
| Specification | 20×52×21 mm |
| Material | |
| Load Direction | Radial Bearing |
| Lubrication | Grease or Oil |
Introduction
High-precision cylindrical roller bearing (Model N2304em) made of premium bearing steel. Designed for radial load applications with dimensions 20×52×21 mm, offering P0–P2 precision grades and Z1V1–Z3V3 vibration control. Suitable for OEM/ODM use.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 & Why Engineers Choose This NTN Cylindrical Roller Bearing
| Description | Core Value |
| Model Range: N2304EM / NJ2304EM / NF2304EM / NU2304EM / NUP2304EM | Interchangeable high-precision variants for flexible OEM integration |
| Bore Size: 15–90 mm | OD: 35–180 mm | Spec: 20×52×21 mm | Compact yet robust — ideal for space-constrained industrial gearboxes & motors |
| Precision Grades: P0, P6, P5, P4, P2 (ABEC-1 to ABEC-9 equivalent) | Ultra-low vibration (Z1V1–Z3V3) ensures smooth operation in high-RPM applications |
| Material: Premium Japanese bearing steel (JIS G4805 SUJ2) | Superior hardness & fatigue resistance vs. standard chrome steel |
| Radial Load Only | Non-Aligning | Separable Design | Easy installation/maintenance; perfect for shafts requiring axial float |
| Lubrication: Grease or oil compatible | Reduces downtime — supports extended relubrication intervals |
| Origin: Japan | Trademark: NTN | Manufactured under strict JIS Q 9001 & ISO 5753 standards — traceable quality |
| Applications: CNC spindles, wind turbine gearboxes, compressors, pumps, steel mill drives | Proven reliability in harsh, continuous-duty environments |
| Differentiator vs. Generic Brands: 3× longer L10 life under identical load/speed conditions (NTN internal test data) | Lower TCO — fewer replacements, less unplanned maintenance |
| FAQ: Can it replace SKF NU2304? Yes — identical dimensions, higher precision options available upon request. | Seamless upgrade path for SKF-based systems seeking enhanced performance |
Product Summary
- Product Name
- NTN N2304EM Cylindrical Roller Bearing – High Precision, Japan-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
NTN N2304EM Cylindrical Roller Bearing – High Precision, Japan-Made
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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