-- SKF Authorized Engineering Partner
Experience smoother, more reliable machinery operation with our premium NSK Cylindrical Roller Bearing lineup, including NJ211em, NJ212em, and NJ213em models. Engineered to handle radial loads with precision, these bearings reduce friction and minimize downtime, ensuring your equipment runs at peak efficiency when you need it most.
15+ Certified Engineers On-Call
Free application analysis · Failure diagnosis · Custom modification guidance. Response within 24 hours.
| Parameter | Details |
|---|---|
| Model NO. | 689 |
| Bearing Type | Deep Groove Ball Bearings |
| Rows Number | Single |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Seals Type | Zz 2RS Open |
| Lubrication | Grease or Oil |
| Precision Rating | P0 P6 P5 P4 P2 |
| Vibration | Z1V1 Z2V2 Z3V3 |
| Specification | 9*17*4 mm |
| Origin | China |
| Service | OEM ODM |
| Industry | Typical Applications |
|---|---|
| Automation Equipment | Conveyor systems, precision machinery |
| Automotive | Small electric motors, auxiliary components |
| General Machinery | Household appliances, power tools |
When sourcing bearings like the NSK NJ211em, NJ212em, NJ213em series, buyers often face challenges with mismatched dimensions, unclear material quality, and limited brand options. A single wrong specification can lead to premature failure, causing costly downtime in production lines or machinery.
This cylindrical roller bearing addresses common industry pain points through ISO 9001-certified manufacturing processes and strict quality control. With a single row design optimized for radial loads, it suits applications in automation equipment and general machinery where reliable load distribution is critical. Our extensive inventory includes both this series and comparable models from leading brands, ensuring you can find the right fit without multiple supplier inquiries.
Designed to operate with grease or oil lubrication, this bearing performs best in environments with moderate temperatures and continuous radial load conditions. Its bearing steel construction provides durability for applications like conveyor systems and small electric motors, where consistent rotation and resistance to wear are essential. The availability of precision ratings from P0 to P2 allows customization based on equipment tolerance requirements.
The single row configuration ensures efficient radial load handling, while the Zz 2RS Open seal options provide flexibility for different contamination control needs—Zz shields offer basic protection, 2RS seals provide enhanced dust and moisture resistance, and open designs allow for lubrication adjustments. The precision rating options directly affect operational smoothness: higher grades like P4 reduce vibration (compatible with Z2V2/Z3V3 vibration classes) which is critical for precision machinery. The 9*17*4 mm specification follows international dimensional standards, ensuring interchangeability with major brands.
Choosing a bearing with proper material hardness and precision directly impacts maintenance costs. Inferior bearings often fail early due to inadequate heat treatment, leading to unexpected shutdowns and replacement expenses. This bearing’s bearing steel construction undergoes strict hardness testing, while the static and dynamic load capabilities are engineered to meet industry standards, reducing the risk of premature wear. By selecting the right precision class and seal type upfront, you avoid the hidden costs of frequent replacements and unplanned downtime.
Our manufacturing and testing processes adhere to ISO 9001 standards, including raw material inspection and成品尺寸、硬度及表面处理检测. Each bearing comes with a质保期 covering manufacturing defects, providing peace of mind for your application. We support both OEM and ODM requirements, and our supply chain includes access to international brands like NSK as well as domestic quality options, allowing you to source exactly what your project needs.
Whether you need the NSK NJ211em, NJ212em, NJ213em series or equivalent models, provide your required dimensions, quantity, and application details. Our team will confirm compatibility and deliver competitive pricing with lead time information. Early inquiry ensures faster processing and stock reservation.
Q: Do you supply bearings from other brands besides those listed?
A: Yes, we support inquiries for all major international and domestic brands. Simply provide the required model or specifications, and we will source accordingly.
Q: How can I confirm if this bearing fits my equipment?
A: Share your equipment model or existing bearing dimensions (d x D x B), and our technical team will verify compatibility with the NJ211em/NJ212em/NJ213em series.
Q: What is your warranty policy for these bearings?
A: We provide a warranty period covering manufacturing defects. Specific terms are detailed in the sales contract, and defective products can be replaced under warranty.
Q: What is the minimum order quantity?
A: We offer low minimum order quantities to accommodate both small trial orders and large-scale purchases, with pricing adjusted based on volume.
Q: How long does shipping take?
A: In-stock items ship within 1-3 business days. Shipping time depends on the selected method: express (3-7 days), air freight (5-10 days), or sea freight (30-45 days).
Q: Can you produce custom bearings to specific designs?
A: Yes, we support OEM/ODM customization. Provide technical drawings or detailed specifications, and we can manufacture bearings to your requirements.
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.
Contact us via email or inquiry form for prompt assistance.
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Official partner since 1998 with direct access to SKF technical resources, genuine products, and engineering expertise.
In-house team provides application design, failure analysis, and predictive maintenance -- reducing bearing failures by 35%.
Every product undergoes rigorous pre-shipment inspection with full documentation for traceability and compliance.
Dedicated account managers and reliable delivery networks ensure on-time supply for enterprise clients worldwide.
Performance Metrics
35%
Failures Prevented
70%
Downtime Reduction
25+
Years Experience
24h
Quote Response
78% of large enterprises prefer suppliers offering integrated technical support and lifecycle services.
Custom bearing selection and system design based on your specific load conditions, speeds, temperatures, and environmental factors.
Root-cause investigation of bearing failures using metallurgical testing, vibration analysis, and operating data review.
IIoT-enabled monitoring with smart sensor bearings for real-time vibration, temperature, and RPM tracking.
Modified bearings with special coatings, seals, tolerances, or materials. Lead time 8-12 weeks from official channels.
Certified engineers available for on-site installation support, alignment checks, and commissioning assistance worldwide.
Long-term service agreements including regular maintenance checks, replacement scheduling, and performance reporting.
Free samples available for orders over $50K
Validated against your KPIs before full production commitment.
-- Get In Touch
Our certified engineers will review your application requirements and provide a detailed quote within 24 hours.
Address
No. 377 Bansongyuan Road, Huangpu District, Shanghai, China
Free Sample Program
Orders over $50K qualify for free product samples
Test against your KPIs before full production commitment. Ask our engineers for details.
Regarding: NSK NJ211em NJ212em NJ213em Cylindrical Roller Bearing
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