W 637-3/2Z Dual-Shielded Micro Bearing for Precision Machinery


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                     Deep groove ball bearing                      

Brand: W 637-3/2Z  bearing   
Our Price:$1.50      Ask for quotation
Filling slots:WithoutModel Number:W 637-3/2Z
Size:
3mm x 7mm x 3mm
Number of rows:1
Locating feature, bearing outer ring:None
Bore type:Cylindrical
Cage:Sheet metal
Matched arrangement:No
Radial internal clearance:CN C2 C3 C4
Tolerance class:Class P6 (P5)
Material, bearing:Bearing steel
Seals Type:Open type   ZZ  2Z  2RS1  DDU VV  DW
LubricantGrease
Deep groove ball bearing with seals or shields

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance





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Knowledge and introduction of bearings

The W 637-3/2Z deep groove ball bearing is a compact and durable bearing designed for applications that demand high precision, low friction, and enhanced protection. Made from high-quality stainless steel, this bearing is resistant to corrosion and wear, providing a long service life even in challenging environments. The dual metal shields (2Z) provide effective protection against dust and debris while keeping lubricant inside, which helps reduce maintenance and ensures smooth, consistent operation.

With its low-friction design, the W 637-3/2Z is capable of operating efficiently at high speeds, making it suitable for use in sensitive equipment such as precision instruments, medical devices, robotics, and small electric motors. Its design balances compactness with robustness, delivering dependable performance in applications where both space and reliability are critical.

Key Features and Benefits:

  • Dual Shielding (2Z): Keeps out contaminants while retaining lubrication, extending the bearing’s lifespan.

  • Corrosion-Resistant Material: Stainless steel construction ensures durability even in demanding conditions.

  • Low Friction: Allows for high-speed, smooth operation with minimal energy loss.

  • Compact Design: Fits within tight spaces without compromising on performance.

  • Precision Engineering: Supports stable, reliable performance in micro-mechanical systems.

Technical Specifications:

  • Model Number: W 637-3/2Z

  • Type: Deep Groove Ball Bearing

  • Material: Stainless Steel

  • Inner Diameter (d): 3 mm

  • Outer Diameter (D): 7 mm

  • Width (B): 3 mm

  • Shield Type: Double Shielded (2Z)

  • Dynamic Load Capacity (C): 0.12 kN

  • Static Load Capacity (C0): 0.048 kN

  • Max Speed (Grease): 45,000 RPM

  • Weight: Approximately 0.5 g

The W 637-3/2Z bearing is built for high-performance applications requiring compact, reliable components. Its dual-shielded design ensures smooth operation over long periods with reduced maintenance. Suitable for sectors like medical equipment, robotics, and fine instruments, this bearing combines efficiency and resilience, meeting the demands of precision engineering in compact systems.


For further details on this product please directly contact our sales department under timson@dmsw.com 


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Timson Power Technology (Shanghai) Co., Ltd

Our Timson Power Technology (Shanghai) Co., Ltd was founded in 2012 and we beganattempting online transactions through the Bearing Mall in 2014. Collectively our staff have decades of experience in the bearing trade and we are also authorised distributors of some of the world’s leading manufacturers, meaning we can offer industry leading service and prices.