Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
Lathe Spindle N221em NJ221em Cylindrical Roller Bearing
Keep your lathe running with precision and minimize downtime with this reliable Lathe Spindle Bearing. Designed for smooth rotation even under heavy loads, it ensures consistent performance to help you maintain tight tolerances in every project.
- Engineered as a cylindrical roller bearing (N221em/NJ221em) to handle radial loads efficiently, ideal for high-speed spindle applications
- Reduces vibration and noise during operation, letting you focus on crafting detailed workpieces without distractions
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
Finding the right cylindrical roller bearing for lathe spindles can be challenging with the market flooded with incompatible sizes and questionable quality. Many buyers face delays from suppliers with limited brand options, or worse, end up with bearings that fail prematurely due to poor material hardness and imprecise dimensions. Our Lathe Spindle N221em NJ221em Cylindrical Roller Bearing addresses these frustrations by offering access to a full range of bearing solutions. As a专业轴承供应商 with ISO 9001 certified processes, we manage both our own brand and major international brands, ensuring you can source the exact cylindrical roller bearing your lathe requires without switching suppliers. Our extensive inventory means common models like this are often available for immediate shipment. This cylindrical roller bearing is engineered for the demanding conditions of lathe spindles, where radial loads and high rotational speeds are constant. Its design accommodates the precise alignment needs of machining operations, ensuring minimal vibration and consistent performance during metalworking tasks. Whether used in small workshop lathes or industrial CNC machines, selecting the correct bearing specification directly impacts tool accuracy and equipment uptime. Características clave de ingeniería para un funcionamiento fiable
Cylindrical roller bearings like the N221em NJ221em series are distinguished by their ability to handle heavy radial loads through line contact between rollers and raceways. The roller design distributes load evenly, reducing stress concentrations that lead to premature failure. Precision class manufacturing ensures tight dimensional tolerances, critical for maintaining spindle runout within acceptable limits. Surface hardness, achieved through controlled heat treatment, enhances wear resistance—essential for extended service life in continuous-duty machining environments. Choosing a quality cylindrical roller bearing reduces long-term costs far beyond initial purchase price. Inferior bearings often cause excessive spindle vibration, leading to poor workpiece finish and increased tool wear. Early bearing failure can result in unplanned downtime, production delays, and expensive repairs to adjacent components like gears or shafts. By adhering to ISO 281 standards for bearing life calculation, our products provide predictable performance, helping you plan maintenance and avoid costly interruptions. Our commitment to quality starts with rigorous incoming material inspections and continues through every production stage. Each cylindrical roller bearing undergoes dimensional accuracy checks, hardness testing, and surface finish evaluations to meet industry standards. We stand behind our products with a warranty covering manufacturing defects, giving you confidence in your purchase. Whether you need a single replacement or bulk order, we ensure consistent quality across all supplied bearings. Don’t let bearing sourcing delays disrupt your operations. Provide us with your lathe model, required bearing specifications, and quantity, and our team will promptly confirm availability and pricing. With our comprehensive brand coverage, we can also assist if you need alternative cylindrical roller bearing models or brands for your equipment. Preguntas Frecuentes
Q: Do you supply other brands or models of cylindrical roller bearings? A: Yes, we support inquiries for all brands and models of bearings, including cylindrical roller bearings, and can supply according to your specified brand or technical requirements. Q: How can I confirm if this bearing fits my lathe spindle? A: Provide your lathe’s make, model, or the specific dimensional requirements (bore diameter, outside diameter, width), and our technical team will verify compatibility with the N221em NJ221em cylindrical roller bearing. P: ¿Cuál es su política de garantía para estos rodamientos? A: We provide a warranty period covering manufacturing defects. Specific terms are outlined in each order contract, and defective products will be replaced or refunded per agreement. Q: What is the minimum order quantity for this cylindrical roller bearing? A: We offer low minimum order quantities, supporting small batch purchases for maintenance needs as well as larger production orders. Q: How quickly can you ship the N221em NJ221em bearing? A: In-stock bearings are shipped within 1-3 business days. Logistics options include express courier, air, or sea freight based on your delivery timeline. P: ¿Ofrecen personalización OEM/ODM para rodamientos de rodillos cilíndricos?
A: Yes, we support custom bearing manufacturing according to your provided drawings, specifications, or sample requirements. Ready to order or need a quote?
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Product Summary
- Product Name
- Lathe Spindle N221em NJ221em 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
Lathe Spindle N221em NJ221em Cylindrical Roller Bearing
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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