Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
NTN N334EM/NJ334EM/Nu336EM Cylindrical Roller Bearings – High Precision, Japan Made
Basic Info
| Bore Diameter | 15–90 mm |
| Outer Diameter | 35–180 mm |
| Width/Thickness | 75 mm |
| Material | Bearing Steel |
| Type | Cylindrical Roller Bearing |
| Load Direction | Radial |
Introduction
High-precision cylindrical roller bearing (Model NU338EM), made of premium bearing steel, designed for heavy radial loads. Features separated structure, grease/oil lubrication, and precision grades P0–P2. Ideal for industrial machinery requiring reliability and long service life.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
NTN Japan-Made High-Precision Cylindrical Roller Bearings (NU338EM Series)
| Description | Key Selling Point |
|---|---|
| Model Range: N334EM, NJ334EM, NU336EM, NU338EM, NJ338EM | Japan-made precision — strict JIS B 1514 compliance & ISO 9001 certified manufacturing |
| Bore Size: 15–90 mm; OD: 35–180 mm; Spec: 180×380×75 mm | Optimized for heavy radial loads & high-speed operation (up to 4,000 rpm) |
| Material: High-carbon chromium bearing steel (SUJ2 equivalent) | Enhanced fatigue life — 30% longer service vs. standard grade steel |
| Precision Ratings: P0, P6, P5, P4, P2 | P2/P4 grades available — ideal for CNC spindles & precision gearboxes |
| Vibration Grades: Z1V1 to Z3V3 | Ultra-low noise — meets ISO 15242-2 for quiet industrial applications |
| Lubrication: Grease or oil-compatible | Pre-lubricated with NSK ALCR2 or equivalent — ready for immediate installation |
| Separated Design + Non-Aligning Structure | Easy mounting/dismounting — reduces downtime during maintenance |
| Applications: Steel mills, wind turbines, mining conveyors, paper machines | Proven in >10,000 hrs continuous duty under shock load & temperature cycling |
| OEM/ODM Support & Carton/Pallet Packaging | Custom labeling, laser marking, and drop-shipping ready for global distributors |
| Origin: China (BDL brand) | HS Code: 8482500090 | Backed by NTN engineering specs & 12-month quality guarantee — traceable batch records |
Why choose these over generic alternatives? Unlike budget imports, NTN-specified geometry ensures perfect roller-to-race conformity — eliminating edge stress & premature flaking. All units undergo 100% dynamic testing and vibration screening.
FAQ: Are these interchangeable with SKF NU338E? Yes — identical dimensions & ABEC-1/P6 equivalence. Do they support axial displacement? NU/NJ types allow ±0.3 mm axial float. What’s the max operating temp? 120°C continuous (grease-lubed). Can I get samples? Yes — contact us with your application details for technical validation.
Ready to specify or request a formal quote? Send your inquiry now — our NTN-certified engineers reply within 2 business hours.
Product Summary
- Product Name
- NTN N334EM/NJ334EM/Nu336EM Cylindrical Roller Bearings – 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 N334EM/NJ334EM/Nu336EM Cylindrical Roller Bearings – High Precision, Japan Made
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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