Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
NTN N334em NJ334em NU336em Cylindrical Roller Bearings Japan
Keep your machinery running smoothly with reliable NTN Cylindrical Roller Bearings designed to reduce downtime and boost operational efficiency. These Japan-manufactured bearings deliver exceptional load capacity and precision, ensuring your equipment maintains consistent performance even under heavy workloads.
- Engineered with EM-series enhanced design for improved heat dissipation and longer service life
- Available in N334em, NJ334em, and NU336em configurations to fit diverse industrial applications
- Precision-ground raceways minimize friction, reducing energy consumption and maintenance needs
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
Product Specifications
| Parameter | Details |
|---|
Application Suitability
| Industry | Typical Applications |
|---|---|
| Construction Machinery | Hydraulic cylinder pivot points, conveyor systems |
| Wind Energy | Yaw drive mechanisms, pitch control systems |
| Mining | Crusher roller assemblies, conveyor pulleys |
| Steel Metallurgy | Rolling mill stands, continuous casting equipment |
| Automotive | Transmission gearboxes, drive axles |
Struggling with Cylindrical Roller Bearing Sourcing? NTN N334em/NJ334em/NU336em Series Explained
Procuring the right cylindrical roller bearings often means sifting through fragmented supplier networks, dealing with incompatible dimensions between metric and imperial standards, and facing the risk of receiving substandard products that fail prematurely. Many buyers spend hours cross-referencing part numbers only to find limited availability or uncertain quality.
All-in-One Sourcing for NTN Series Cylindrical Roller Bearings
Our extensive inventory covers the complete range of NTN cylindrical roller bearings including N334em, NJ334em, and NU336em models, designed to meet the dimensional standards of major international brands. As a professional bearing supplier with ISO 9001 certified inspection processes, we maintain ready stock for quick delivery while supporting custom orders for specialized applications in hydraulic systems and automation equipment.
Optimal Performance in Heavy-Duty Rotating Applications
These cylindrical roller bearings excel in high-radial load environments operating at moderate to high speeds, typical in steel mill rolling stands and mining conveyor systems. The NU design allows for axial displacement between shafts and housings, while NJ type provides one-directional axial guidance—critical features for equipment subject to thermal expansion or shaft misalignment up to 0.5° under load.
Engineering Features That Ensure Reliability
The bearings incorporate precision-ground raceways and rollers to maintain tight dimensional tolerances, essential for interchangeability with original equipment specifications. Manufactured from high-carbon chromium steel, the components undergo controlled heat treatment to achieve surface hardness of 58-62 HRC, balancing wear resistance with toughness to prevent premature spalling. The EM suffix indicates enhanced internal design with optimized roller profiling, reducing edge stresses under heavy loads and extending fatigue life by up to 30% compared to standard designs.
Total Cost Impact of Proper Bearing Selection
Choosing the correct cylindrical roller bearing directly affects equipment uptime and maintenance costs. A bearing with insufficient dynamic load rating (C) will experience early fatigue failure, while improper clearance can cause overheating in high-speed applications. Our technical team helps verify critical parameters including bore diameter (d), outer diameter (D), and width (B) to ensure compatibility, avoiding costly mistakes like replacing an N-type bearing when an NJ-type with flange guidance is required.
Quality Assurance You Can Verify
Every bearing undergoes multi-stage inspection including dimensional measurement, hardness testing, and surface finish analysis. Our quality management system complies with ISO 9001 standards, from raw material verification to final packaging. We provide a standard warranty against manufacturing defects, with clear procedures for product replacement if issues arise. As an independent supplier, we source from established production facilities while offering competitive pricing through efficient inventory management.
Packaging & Shipping
- Industrial-grade cardboard boxes with moisture barrier lining
- Same-day dispatch for in-stock items
- Express courier, air freight, or sea shipping options available
- Flexible minimum order quantities starting from single units
Get Your NTN Cylindrical Roller Bearing Quote Today
Whether you need N334em, NJ334em, NU336em or other cylindrical roller bearings, provide your exact model number or dimensional requirements (d x D x B) and quantity. Our team will confirm availability and deliver a competitive quote within 24 hours, helping you secure the right components without unnecessary delays.
Frequently Asked Questions
Q: Do you supply bearings from other international brands besides NTN?
A: Yes, we support procurement of cylindrical roller bearings and other types from all major brands including SKF, NSK, Koyo, NACHI, IKO, FAG, and Timken, as well as domestic manufacturers.
Q: How can I confirm if the NU336em bearing fits my equipment?
A: Provide your existing bearing part number or critical dimensions (bore diameter, outer diameter, width), and our technical team will cross-reference with manufacturer specifications to verify compatibility.
Q: What warranty coverage do you offer on these bearings?
A: We provide a standard warranty against manufacturing defects. The specific duration and terms will be detailed in your order confirmation, with replacement available for verified production-related issues.
Q: What is the minimum order quantity for NTN N334em bearings?
A: We accept orders starting from single units, making it feasible for both maintenance replacements and small-scale production requirements.
Q: How long does shipping take to North American destinations?
A: In-stock items shipped via express courier typically arrive within 3-5 business days. Air freight options are available for urgent orders, with sea freight for larger shipments.
Q: Can you provide custom cylindrical roller bearings with special tolerances?
A: Yes, we support OEM/ODM customization for non-standard dimensions, clearance levels, and surface treatments. Provide your technical drawing or specification requirements for a feasibility assessment.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
sales@bearing-supply.com | +1-800-BEARING
Product Summary
- Product Name
- NTN N334em NJ334em NU336em Cylindrical Roller Bearings Japan
- 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 Japan
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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