Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
NACHI NSK NJ236em NJ238em NJ240em Cylindrical Roller Bearing
Experience smooth, reliable rotation in high-load applications with our premium NSK Cylindrical Roller Bearing options, including NJ236em, NJ238em, and NJ240em models. These bearings minimize friction to extend equipment lifespan, ensuring your machinery runs efficiently even under demanding conditions.
- Engineered with precision EM-type cages for enhanced stability during high-speed operation
- Designed to handle radial loads with superior durability, reducing unexpected downtime
- Direct replacement for industrial machinery requiring consistent performance and long service intervals
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
Especificaciones del Producto
Parámetro
Detalles
Idoneidad de la Aplicación
Industria
Aplicaciones Típicas
Maquinaria de Construcción
Puntos de pivote del cilindro hidráulico, ejes de entrada de la caja de cambios
Metalurgia del Acero Equipo de Minería
Fabricación Automotriz
Searching for the right cylindrical roller bearings often means wading through confusing model numbers and questionable quality. Many buyers face unexpected downtime when cheap alternatives fail prematurely or struggle to source multiple brands from different suppliers. As a bearing specialist with years in industrial supply, we understand these frustrations firsthand. Diseñado para un Rendimiento de Alta Resistencia
The NACHI NSK NJ236em, NJ238em, and NJ240em cylindrical roller bearings address these challenges through precision manufacturing and versatile design. Our ISO 9001-certified supply chain ensures consistent quality across all major brands, while our extensive inventory means you can source these specific models without lengthy lead times. Whether used in steel mill gearboxes or mining equipment axles, these bearings deliver reliable radial load handling where it matters most. These cylindrical roller bearings excel in applications with heavy radial loads and moderate axial displacement. Operating temperatures ranging from -30°C to 120°C make them suitable for both indoor machinery and outdoor industrial settings. Their NJ-type design (single ribbed inner ring, double ribbed outer ring) allows for axial movement of the shaft relative to the housing, making them ideal for equipment subject to thermal expansion, such as conveyor systems and hydraulic presses. Características clave de ingeniería para la longevidad
The performance of these bearings stems from critical design elements. The EM suffix indicates enhanced internal geometry, including optimized roller profiles that reduce edge stress under heavy loads. Precision-machined raceways ensure uniform load distribution across the roller set, minimizing vibration and extending service life. Surface hardness of HRC 58-62 on raceways and rollers provides excellent wear resistance, while the cylindrical bore design allows for easy mounting and dismounting—a crucial factor during maintenance shutdowns. El Costo Total de Propiedad es lo Más Importante
Choosing the right cylindrical roller bearing directly impacts your bottom line. Inferior bearings may save upfront costs but often lead to premature failures, causing production downtime and costly repairs. These NJ-series bearings, built to international dimensional standards, reduce replacement risks through consistent quality control. By matching the correct bearing to your application—considering load capacity, speed, and operating conditions—you avoid the hidden costs of misalignment, insufficient load ratings, and poor material quality that plague cheaper alternatives. Aseguramiento de Calidad Que Puedes Verificar
Our commitment to quality starts with rigorous supplier screening and continues through every stage of the procurement process. All bearings undergo dimensional inspection, hardness testing, and surface finish analysis before shipping. We provide a standard质保期 against manufacturing defects, with clear documentation of test results available upon request. Whether you need NACHI, NSK, or another trusted brand, our multi-source supply chain ensures you get the exact specifications you require without compromising on quality. Cajas de cartón de grado industrial con embalaje interior protector
Envío el mismo día para artículos en stock
Opciones logísticas flexibles que incluyen mensajería exprés, transporte aéreo y transporte marítimo
Obtenga su cotización de rodamientos de rodillos cilíndricos hoy
Whether you need NJ236em, NJ238em, NJ240em, or other cylindrical roller bearings, we can provide competitive pricing and availability. Simply share the exact model number, required quantity, and delivery location, and our team will prepare a detailed quote within 24 hours. Early confirmation ensures priority handling of your order, so you can keep your production schedule on track. Preguntas Frecuentes
Q: ¿Puede suministrar otras marcas o modelos de rodamientos de rodillos cilíndricos?
A: Yes, we support inquiries for all major brands and型号, including SKF, NTN, Koyo, FAG, and Timken, as well as domestic Chinese brands. We can source bearings to your exact specifications. P: ¿Cómo puedo confirmar si estos rodamientos se ajustarán a mi equipo?
A: Provide your equipment model or the required dimensions (bore diameter, outer diameter, width), and our technical team will verify compatibility with the NJ236em/NJ238em/NJ240em series or recommend alternatives if needed. P: ¿Cuál es su política de garantía para estos rodamientos? A: We provide a质保期 against manufacturing defects, with terms varying by brand. Specific warranty details will be included in your order confirmation and product documentation. Q: ¿Cuál es la cantidad mínima de pedido para estos rodamientos de rodillos cilíndricos? A: We offer low minimum order quantities, typically starting from 1 unit for standard models, making it easy to source both small replacement batches and large production volumes. P: ¿Cuánto tiempo tarda el envío y qué opciones de entrega están disponibles?
A: In-stock bearings ship the same day. Delivery times depend on location—express courier takes 3-5 days, air freight 5-7 days, and sea freight 25-40 days. We’ll help you choose the most cost-effective option based on your timeline. Q: Do you offer OEM or ODM定制 services for cylindrical roller bearings? A: Yes, we support custom bearing manufacturing based on your drawings or specifications, including special materials, tolerances, and lubrication options for unique applications. Ready to order or need a quote?
Rolling mill conveyor systems, continuous casting machines
Crusher rotor supports, conveyor belt pulleys
Stamping press crankshafts, robotic arm joints
Need Reliable Cylindrical Roller Bearings? NJ236em/NJ238em/NJ240em Series Explained
Optimized for High-Load Industrial Environments
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.
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Product Summary
- Product Name
- NACHI NSK NJ236em NJ238em NJ240em 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
NACHI NSK NJ236em NJ238em NJ240em Cylindrical Roller Bearing
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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