Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
Need Technical Advice?
Reply within 12 hours · 15+ certified engineers on call
Cylindrical Roller Bearing
Timken NJ2248em NJ2252em NJ2256em Cylindrical Roller Bearing
Ensure smooth, reliable machinery operation with Timken's precision-engineered Cylindrical Roller Bearings. The NJ2248em, NJ2252em, and NJ2256em models deliver exceptional load handling and reduced friction, minimizing downtime and extending equipment lifespan.
Designed for demanding industrial applications, these bearings feature optimized internal geometry that enhances radial load capacity while maintaining tight tolerance control—critical for high-speed rotating equipment. Their durable construction ensures consistent performance even under heavy loads, addressing the common challenge of unexpected maintenance interruptions.
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
Spécifications du produit
Paramètre
Détails
Applicabilité de l'application
Industrie
Applications typiques
Machinerie d'ingénierie
Cales de laminoir, systèmes de convoyage
Automobile
Énergie Éolienne
Searching for reliable cylindrical roller bearings that match your equipment’s exact specifications can feel overwhelming. Many buyers face delays when sourcing specific models or struggle with inconsistent quality from generic suppliers. When critical machinery relies on bearing performance, choosing the wrong component can lead to unplanned downtime and costly repairs. The Timken NJ2248em, NJ2252em, and NJ2256em cylindrical roller bearings address these challenges with precision-engineered design suitable for high-load industrial applications. As a supplier with access to comprehensive bearing ranges—including international brands like Timken and domestic quality options—we provide a single source for your bearing needs, eliminating the hassle of multiple vendor comparisons. Performance optimale dans des conditions exigeantes
These cylindrical roller bearings excel in applications with radial loads and moderate axial loads, common in gearboxes, pumps, and industrial machinery operating at moderate to high speeds. Their robust construction handles continuous operation under varying temperature conditions, making them ideal for steel mills, mining equipment, and heavy-duty conveyors where reliability is non-negotiable. Caractéristiques d'ingénierie clés pour la longévité
Cylindrical roller bearings like the NJ2248em, NJ2252em, and NJ2256em series are designed with separable inner or outer rings, simplifying mounting and dismounting during maintenance. The precision-ground raceways ensure even load distribution across rolling elements, reducing stress concentrations and extending service life. Their cage design maintains proper roller alignment, minimizing friction and heat generation during operation—critical factors in high-speed applications where overheating can cause premature failure. Le coût total de possession compte
Choosing a quality cylindrical roller bearing directly impacts your equipment’s total operational cost. Inferior bearings with imprecise dimensions or substandard materials often lead to increased vibration, noise, and early wear, requiring frequent replacements. In contrast, properly specified bearings like the Timken NJ series reduce maintenance intervals and minimize production disruptions, delivering better long-term value despite potentially higher initial cost. Our bearings undergo rigorous quality control processes aligned with ISO 9001 standards, from raw material inspection to final dimensional and hardness testing. Each bearing is checked for surface finish and tolerance compliance to ensure interchangeability with original equipment specifications. We stand behind our products with a warranty covering manufacturing defects, providing peace of mind for your critical applications. Emballage industriel standard adapté au transport longue distance
Options d'expédition flexibles incluant le courrier express, le fret aérien et le fret maritime
Quantité minimale de commande faible pour soutenir à la fois les petites réparations et les grandes séries de production
Obtenez votre devis pour roulements à rouleaux cylindriques aujourd'hui
Whether you need Timken NJ2248em, NJ2252em, NJ2256em, or other cylindrical roller bearing models, we can provide competitive pricing and availability. Share your exact bearing requirements—including model number, dimensions, and quantity—and our team will respond promptly with a tailored quote. Questions Fréquemment Posées
Q: Do you supply bearings from other brands besides Timken? A: Yes, we offer a comprehensive range of bearings including international brands like SKF, NSK, NTN, Koyo, NACHI, IKO, FAG as well as domestic quality options. We can source and supply bearings according to your specific brand requirements. Q: How can I confirm if the NJ2248em/NJ2252em/NJ2256em bearing fits my equipment? A: Provide us with your equipment model or the bearing dimensions (bore diameter, outer diameter, width), and our technical team will verify compatibility with the Timken NJ series specifications. Q: What warranty do you offer on these cylindrical roller bearings? A: We provide a warranty against manufacturing defects. The specific warranty period and terms will be detailed in your order confirmation and sales contract. Q: Quelle est la quantité minimale de commande pour ces roulements ?
A: We support low minimum order quantities, including single-unit purchases for maintenance needs, as well as bulk orders for production requirements. Q: How quickly can you ship the Timken NJ series bearings? A: Stock items are typically shipped within 1-3 business days. For non-stock models, lead times will be provided in your quote based on current availability. Q: Do you offer custom bearing solutions if standard models don’t meet my needs? A: Yes, we support OEM/ODM customization for special bearing requirements. Contact us with your detailed specifications or drawings for a feasibility assessment. Ready to order or need a quote?
Hydraulic cylinder pivot points, gearbox assemblies
Steel & Metallurgy
Transmission components, drive train systems
Generator gearboxes, pitch control mechanisms
Finding the Right Cylindrical Roller Bearing? Timken NJ2248em NJ2252em NJ2256em Series Delivers
Engineered for Heavy-Duty Performance
Quality You Can Trust
Packaging & Shipping
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
{{联系方式}}
Product Summary
- Product Name
- Timken NJ2248em NJ2252em NJ2256em Cylindrical Roller Bearing
- 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
Timken NJ2248em NJ2252em NJ2256em Cylindrical Roller Bearing
NDA protected · Free samples for orders > $50K · Reply within 12 hours
Related Products
More Cylindrical Roller Bearing Products
Cylindrical Roller Bearing
High-Quality Tapered Roller Bearings BDL 31304, 33206, 33006, 33109, 32905 for Motors
Cylindrical Roller Bearing