Product structure:

The 695 ZZ bearing is an ultra-thin deep groove ball bearing with dimensional specifications: bore diameter (d) 5 mm, outer diameter (D) 13 mm, width (B) 4 mm, belonging to the thin-section miniature bearing category. The suffix "ZZ" indicates that the bearing is equipped with stamped steel shields (metal shields) on both sides, providing effective sealing against dust and contaminant ingress. The internal structure features a deep groove continuous raceway design capable of simultaneously withstanding radial loads and certain bidirectional axial loads. The cage is typically made of stamped steel or engineering plastic (such as nylon), ensuring precise ball positioning and low-friction operation.

Key performance features:

The core performance characteristics of this bearing are: 1) Ultra-Thin Design: With a width of only 4mm, it enables installation in extremely limited axial space, meeting the needs of compact designs. 2) Low Noise and Smooth Operation: High-precision machining ensures smooth running with minimal vibration and low noise, making it suitable for environments with high requirements for quietness. 3) Pre-lubricated and Maintenance-Free: Pre-filled with high-quality grease at the factory and combined with ZZ shields, it allows for long-term maintenance-free operation in clean or mildly contaminated environments. 4) Good High-Speed Performance: Optimized internal geometry and finely finished surfaces, coupled with lightweight design, make it suitable for medium to high-speed rotation applications. 5) High Cost-Effectiveness and Reliability: As a standardized miniature bearing, it offers excellent cost-effectiveness while ensuring reliable performance.

Main application scenarios:

The 695 ZZ bearing is widely used in various equipment extremely sensitive to size and weight. Specific scenarios include: 1) Micro Motors: Core rotating components in small drone motors, micro water pumps, model car motors, and personal care appliances (such as electric hair clippers, beauty devices). 2) Office Equipment: Drive components for photoconductor drums in laser printers/copiers, moving guide rails for optical modules in scanners, and roller shaft support in automatic paper feed mechanisms. 3) Precision Instruments: Optical adjustment mechanisms, shafts for pointer instruments, and small rotating parts in precision balances. 4) Consumer Electronics: Vibration motors in smartphones, focusing modules for micro cameras, and micro transmission components inside smartwatches. 5) Industrial Control: Precision rotational support for small encoders, flow meters, and valves.

Technical Specifications and Requirements:

The 695 ZZ bearing adheres to common technical standards: 1) Dimensions and Tolerances: Main dimensions conform to ISO 15:2011 (GB/T 276) standards, with width tolerances potentially referencing specific thin-series standards. The常规 accuracy class is Normal (P0). 2) Radial Internal Clearance: Standard radial internal clearance (CN group) is typically supplied. Clearance can be specifically designated for applications involving high speeds or significant temperature variations. 3) Material Specifications: Rings and balls are generally made of high-carbon chromium bearing steel (GCr15, AISI 52100), heat-treated to achieve appropriate hardness. Shields are made of low-carbon steel such as SPCC. 4) Lubrication: Standard products are pre-lubricated with general-purpose lithium-based grease or synthetic grease, suitable for operation within常规 temperature ranges (e.g., -30°C to +110°C). Lubrication can be customized for special requirements (e.g., higher speeds, extremely low temperatures). 5) Installation and Usage Requirements: During installation, dimensional accuracy and geometric tolerances of the shaft and housing must be ensured, and improper hammering should be avoided. Due to its thin cross-section, special attention must be paid to controlling off-center loads and misalignment during installation. It is not suitable for heavy-load or high-impact conditions.

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