Cylindrical Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Cylindrical Roller Bearing
N221EM Cylindrical Roller Bearing for Lathe Spindle – High Precision, Low Noise
Basic Info.
| Inner Diameter | 105 mm |
| Outer Diameter | 190 mm |
| Width | 36 mm |
Introduction
NUP221EM is a high-precision cylindrical roller bearing made of bearing steel, designed for radial load applications. It features an open seal type, single-row structure, and supports oil, grease, or dry lubrication. Suitable for OEM/ODM service with P0–P2 precision ratings.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
Key Specifications & Benefits of NUP221EM Cylindrical Roller Bearing
| Feature | Description |
| Ultra-Precise Spindle Support | Optimized for high-speed lathe spindles with P0–P2 precision grades (ISO) and minimal radial runout. |
| Bearing Steel Construction | Made from premium GCr15 bearing steel — hardened, ground, and fatigue-resistant for 3× longer service life. |
| Radial Load Capacity | High radial stiffness + separable design enables easy mounting & axial location — ideal for fixed-end applications. |
| Open Configuration | No seals — allows flexible lubrication (oil/grease/dry) and integration into sealed machine housings. |
| Dimensional Accuracy | Exact 105×190×36 mm (d×D×B); outer diameter range: 35–400 mm — compatible with SKD/SKF interchange standards. |
| Non-Aligning Design | Ensures rigidity and positional stability — critical for CNC turning accuracy and surface finish consistency. |
| OEM/ODM Ready | BDL-manufactured under ISO 9001; fully customizable (clearance, cages, coatings) to match SKF OEM specs. |
| Global Compliance | HS Code 8482500090; CE-certified; meets DIN/ISO 15242 and ABEC-1 to ABEC-9 equivalency. |
| China-Origin Quality Control | 100% inspected pre-shipment; batch traceability; 2-year warranty on material & workmanship. |
| Why Choose This Over Generic Brands? | Superior roller profile grinding, tighter raceway hardness uniformity (HRC 61–64), and lower vibration (Z2/V2 grade) vs. standard imports. |
Engineered for demanding metalworking environments — lathes, milling spindles, gearboxes, and industrial pumps. Need technical validation, CAD files, or SKF cross-reference support? Send your inquiry now — our application engineers reply within 2 hours.
Product Summary
- Product Name
- N221EM Cylindrical Roller Bearing for Lathe Spindle – High Precision, Low Noise
- 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
N221EM Cylindrical Roller Bearing for Lathe Spindle – High Precision, Low Noise
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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