SMR137zz
SMR Series Stainless Steel Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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SMR137zz Bearing Product Overview & Core Advantages
The SMR137zz is a precision miniature ball bearing designed for demanding applications requiring high reliability in compact spaces. As a single row deep groove ball bearing with stainless steel construction, it excels at handling radial loads and offers excellent operational performance. Its shielded design provides effective contamination protection, while the ABEC1 tolerance class ensures consistent and smooth rotation, making it ideal for high-precision, high-reliability mechanisms.
SMR137zz Bearing Model Code Explained, Specifications & Naming Convention
- SMR137: Base series designation for a miniature bearing with a 7mm bore and 13mm outside diameter.
- zz: Indicates the bearing is equipped with non-contact shields (ZZ) on both sides. This provides protection against contamination while minimizing friction and torque.
SMR137zz Bearing Structural Features & Performance Benefits
Robust Stainless Steel Construction: All components, including rings, balls, and cage, are manufactured from stainless steel, providing excellent corrosion resistance and durability, suitable for a wide temperature range of -30°C to 110°C.
High-Speed Capability: The optimized design and stainless steel cage contribute to a high limiting speed of 36,000 rpm, enabling use in demanding high-velocity applications.
Effective Sealing: The ZZ shields help retain lubricant and exclude larger particulate contaminants, enhancing bearing service life. Note that lubrication is required for optimal performance.
Precision and Smooth Operation: Manufactured to ABEC1 precision class with a controlled radial internal clearance (MC3 group), this bearing ensures low noise and vibration for smooth running.
SMR137zz Bearing Typical Application Areas
The SMR137zz is widely used in applications requiring compact size, corrosion resistance, and reliable performance. Typical industries and equipment include:
- Precision Instruments and measurement devices
- Small Electric Motors and gearboxes
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Radio Control Models and drones
