Product Specifications
| Parameter |
Details |
| Model NO. |
634, 634-2Z, 634-2RS |
| Rows Number |
Single |
| Load Direction |
Radial Bearing |
| Material |
Bearing Steel |
| Contact Angle |
0° |
| Specification |
4×16×5mm |
| Trademark |
NSK |
| Origin |
Germany, Sweden, Japan |
| HS Code |
8482102000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Manufacturing |
CNC Machine Tools, Textile Machinery, Printing Equipment |
| Automotive |
Electric Motors, Small Gearboxes, Auxiliary Systems |
| Agricultural Machinery |
Harvester Components, Tractor Auxiliary Equipment |
| Home Appliances |
Washing Machines, Air Conditioner Fans, Power Tools |
| New Energy |
Solar Tracker Systems, Small Wind Turbine Components |
Prevent Equipment Downtime with High Precision 634 Deep Groove Ball Bearings
Industrial machinery operators know the cost of unexpected downtime—missed production deadlines, maintenance overtime, and disrupted workflows. When standard bearings fail prematurely due to poor precision or material quality, the ripple effects impact your bottom line. Sourcing reliable bearings that meet exact specifications often means navigating minimum order quantities that don’t align with your immediate needs, or waiting weeks for delivery when your equipment is idle.
High Precision 634 Series Bearings: Engineered for Uninterrupted Performance
Our High Precision Deep Groove Ball Bearing 634 series directly addresses these challenges with dimensions of 4×16×5mm, designed to deliver consistent rotation in industrial machinery. As a professional bearing supplier with decades of export experience, we ensure each 634-2Z (metal shielded) and 634-2RS (rubber sealed) bearing meets strict quality standards, supporting both standard and customized requirements. Whether your application demands low noise operation or resistance to dust and moisture, this series provides the reliability needed to keep your equipment running.
Optimal Performance in Critical Industrial Applications
The 634 Deep Groove Ball Bearing excels in applications requiring radial load support and high rotational precision. Ideal for small electric motors, textile machine spindles, and precision gearboxes, it operates efficiently under moderate speeds while maintaining stability. The single-row design with a 0° contact angle ensures uniform load distribution, making it suitable for continuous-duty equipment in manufacturing plants, automotive production lines, and agricultural machinery where consistent performance is non-negotiable.
Technical Features That Ensure Long-Term Reliability
Crafted from high-grade bearing steel, the 634 series offers exceptional durability to withstand the rigors of industrial environments. The 634-2Z variant features metal shields to prevent contamination while allowing for higher operating speeds, making it suitable for dry, low-debris settings. For applications exposed to moisture or particles, the 634-2RS with rubber seals provides enhanced protection, reducing maintenance needs and extending service life. Each bearing adheres to international standards, ensuring compatibility with existing machinery and minimizing the risk of premature failure due to dimensional inaccuracies.
Why Genuine Bearings Matter for Total Cost of Ownership
Choosing genuine NSK 634 bearings over counterfeit alternatives eliminates hidden costs associated with frequent replacements and unplanned downtime. Counterfeit bearings often use substandard materials, leading to early wear, increased vibration, and potential equipment damage. In contrast, our genuine bearings undergo strict quality control—including dimensional inspection and performance testing—to ensure they meet ISO standards. With a 12-month warranty from the date of receipt, we stand behind the reliability of every bearing, reducing your long-term maintenance expenses and protecting your production efficiency.
Your Trusted Partner for Bearing Solutions
With over 18 years of experience serving global clients across Europe, North America, and Southeast Asia, Jinan Saifan Bearing Co., Ltd combines technical expertise with customer-focused service. Our ISO 9001:2015 certified quality management system ensures consistent product performance, while our professional R&D team provides free guidance on bearing selection and installation. We offer flexible ordering with a 1-piece MOQ for standard bearings, sample orders within 3-5 working days, and bulk deliveries in 5-15 days. Multiple secure payment methods, including T/T and Alibaba platform transactions, ensure a smooth procurement process.
Packaging & Shipping
- Securely packed in original NSK packaging with protective materials to prevent damage during transit
- Sample orders shipped within 3-5 working days; bulk orders delivered in 5-15 working days
- Global logistics options including DHL, FedEx, UPS, air freight, and sea freight
- Real-time tracking information provided once shipment is dispatched
- 1-piece minimum order quantity available for emergency maintenance needs
Get Your 634 Bearings Delivered Fast
Don’t let equipment downtime erode your productivity. Whether you need a single replacement bearing or bulk quantities for scheduled maintenance, we ensure prompt delivery and reliable performance. Contact us today with your bearing model, application details, and quantity requirements to receive a tailored quote—our team responds within 24 hours to help you get back to full operation.
Frequently Asked Questions
Q: Are these genuine NSK bearings?
A: Yes, we supply genuine original NSK bearings sourced directly from authorized channels, with full traceability to ensure authenticity.
Q: How do I confirm if the 634 bearing fits my equipment?
A: Provide your equipment model or specific dimensional requirements (bore diameter, outer diameter, width), and our technical team will verify compatibility free of charge.
Q: What is the warranty policy for these bearings?
A: All products come with a 12-month warranty from the date of receipt. Defective products due to manufacturing issues will be replaced or refunded.
Q: What is the minimum order quantity?
A: We offer a 1-piece MOQ for standard bearings like the 634 series, supporting both small repairs and large-scale production needs.
Q: How quickly can I receive my order?
A: Sample orders ship within 3-5 working days, while bulk orders take 5-15 working days. Expedited shipping options are available upon request.
Q: How can I verify the authenticity of the bearings?
A: Genuine NSK bearings include original packaging with防伪标签 (anti-counterfeit labels), laser-etched markings, and serial numbers that can be cross-verified through official channels. We provide full documentation for traceability.
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