Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
High Precision N304EM Cylindrical Roller Bearing – Factory Direct
Basic Info
| Bore Diameter | 15–90 mm |
|---|---|
| Outer Diameter | 35–180 mm |
| Width | 15 mm (e.g., 20×52×15 mm) |
Introduction
Cylindrical roller bearing 307, model NUP304EM, made of bearing steel. Designed for radial load, non-aligning, separated structure. Precision grades P0–P2, lubricated with grease or oil. Suitable for OEM/ODM applications. 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 & Why SKF-Grade Buyers Choose This Cylindrical Roller Bearing
| Description | Core Value |
|---|---|
| Model Range: N304EM / NJ304EM / NF304EM / NU304EM / NUP304EM | Interchangeable high-precision series — ideal for OEM retrofit & global standard compliance |
| Bore Size: 15–90 mm | OD: 35–180 mm | Spec: 20×52×15 mm | Compact yet robust design — fits tight-space industrial gearboxes & motors |
| Material: Premium GCR15 Bearing Steel (SKF-equivalent) | Enhanced fatigue life & dimensional stability under dynamic loads |
| Precision Grades: P0, P6, P5, P4, P2 | Meets ISO/ABEC standards — P2 option available for high-speed spindles |
| Vibration Levels: Z1V1 to Z3V3 | Ultra-low noise operation — critical for CNC machines & medical equipment |
| Lubrication: Grease or Oil Compatible | Flexible maintenance — supports sealed & open-system applications |
| Structure: Separated, Non-Aligning Cylindrical | Easy installation & axial location control — reduces assembly time by ~30% |
| Load Direction: Pure Radial | Optimized for heavy-duty conveyor systems, pumps & compressors |
| Origin & Certification: Made in China | HS Code 8482500090 | BDL Brand | ISO 9001 audited production — full traceability & batch testing reports |
| OEM/ODM Service + Carton/Pallet Packaging | Custom branding, labeling & logistics-ready — zero MOQ for sample orders |
Applications: Industrial gearboxes, electric motors, wind turbine yaw systems, steel mill rollers, and precision machine tools.
Why It Stands Out: Unlike generic imports, every batch undergoes 100% dimensional inspection, hardness verification (HRC 60–64), and dynamic load testing — matching SKF’s baseline performance at 40% lower TCO.
FAQ: Q: Is NUP304EM pre-lubricated? A: Yes — standard with lithium-based grease (NLGI #2). Q: Can it replace SKF NU304E? A: Fully interchangeable (same ABEC-1 tolerances, cage design & load ratings). Q: What’s the max speed at P5 grade? A: 12,000 rpm (with oil mist lubrication).
Ready to validate performance in your application? Send your inquiry now — get free technical support + sample lead time within 24h.
Product Summary
- Product Name
- High Precision N304EM Cylindrical Roller Bearing – Factory Direct
- 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
High Precision N304EM Cylindrical Roller Bearing – Factory Direct
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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