Product structure:

The MF104 ZZ bearing is a standard miniature deep groove ball bearing with core dimensions of 4mm inner diameter, 10mm outer diameter, and 4mm width. Structurally, it features a single row of balls with a cage and is equipped with pre-installed metal shields on both sides (ZZ code indicates double metal shields). This design effectively prevents internal grease leakage and the ingress of external dust and contaminants while maintaining low frictional resistance. The bearing is typically made of high-carbon chromium bearing steel (e.g., GCr15) and pre-lubricated with grease suitable for high-speed operation.

Key performance features:

The main performance features of this bearing include: 1. High-Speed Capability: Optimized internal design and precision machining enable it to accommodate high rotational speeds. 2. Low Operating Noise & Vibration: Excellent conformity between balls and raceways, along with precision machining, ensures smooth and quiet operation, suitable for noise-sensitive equipment. 3. Maintenance-Free & Long Service Life: The double metal shields provide good dust protection, and the internal pre-lubrication can maintain lubrication for an extended period, enabling maintenance-free operation and prolonged service life. 4. High Reliability: The use of high-quality steel and strict manufacturing standards ensures reliability and stability under continuous loads. 5. Easy Installation: As a standard miniature bearing, it offers wide compatibility and interchangeability.

Main application scenarios:

In specific application scenarios, the MF104 ZZ bearing is commonly used as: the shaft support in small DC or stepper motors, enabling high-speed and stable rotation of the motor spindle; a supporting unit in various small transmission mechanisms (e.g., gearboxes, pulleys) to withstand radial loads; the core precision movement component in精密旋转部件 (e.g., optical lens turntables, instrument pointer shafts); and a key motion component in compactly designed motion modules (e.g., 3D printer extruder fans, small robotic joints). Its sealing makes it particularly suitable for indoor environments with slight dust but no exposure to liquids or high-pressure sprays.

Technical Specifications & Requirements:

The technical specifications of the MF104 ZZ bearing generally follow international standards (e.g., ISO or JIS standards for miniature bearings). Key technical requirements include: dimensional tolerances conforming to ABEC-1 or higher precision classes (e.g., ABEC-3); radial clearance typically being C0 (Normal Group) or CN (Standard Group), with tighter clearances available upon request; dynamic load rating (C) and static load rating (C0) must meet standard calculated values to ensure load capacity; material hardness requiring rings and balls to achieve HRC 58-64; operating temperature range is typically -20°C to +120°C, depending on the grease type; and bearings must undergo strict pre-delivery testing for noise, rotational flexibility, and dimensional accuracy.

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