Product structure:

The key dimensional parameters of the 6705 ZZ bearing are: Bore diameter (d) 25mm, Outer diameter (D) 32mm, Width (B) 4mm. Its structure follows the standard deep groove ball bearing design with a deep, continuous groove raceway, capable of handling radial and bidirectional axial loads. The suffix "ZZ" indicates that the bearing is equipped with pressed steel shields (metal shields) on both sides, providing effective sealing to protect the rolling elements from contamination and retain the grease.

Key performance features:

Main features include: 1. Low Friction & High Speed: Precision-made steel balls and raceways ensure smooth operation with low starting torque, suitable for medium to high speeds. 2. Dust Protection: Double metal shields (ZZ) offer good protection against dust ingress, extending service life in dusty environments. 3. Maintenance-Free: Pre-greased from the factory, the shields typically allow for maintenance-free operation throughout its service life under normal conditions. 4. Radial & Axial Load Capacity: The deep groove design enables it to withstand both radial loads and certain bidirectional axial loads. 5. Cost-Effective: As a standardized miniature bearing, it offers high cost-performance and broad interchangeability.

Main application scenarios:

It is widely used for shaft support in various small motors, such as low-power motors in household appliances, cooling fan motors in computers, and toy car motors. Additionally, it is commonly found in mechanisms requiring precise low-speed rotation or transmission, such as paper feed rollers in printers/copiers, instrument pointer mechanisms, model gearboxes, light-duty conveyor rollers, and rotating parts of various small jigs and fixtures.

Technical Specifications & Requirements
Typically manufactured according to international standards (e.g., ISO 15:2011, JIS B 1514) or Chinese National Standard (GB/T 276). Key technical requirements include: Dimensional accuracy conforms to Normal class (P0) or higher; Running accuracy (e.g., radial runout) meets standard specifications; Internal clearance is usually in the Normal group (C0); Material is generally high-carbon chromium bearing steel (e.g., GCr15); Operating temperature range is limited by the grease, typically from -30°C to +120°C. During installation, ensure the dimensional accuracy and coaxiality of the shaft and housing, and avoid damage caused by improper hammering.

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