Miniature bearings refer to precision bearing products with an outer diameter less than 9mm (metric) or 9.525mm (imperial), which are widely used in small equipment with limited space and precise operation. They have compact structure, flexible operation, good high-speed performance and low noise characteristics. Miniature bearings are often made of various materials such as bearing steel, stainless steel, ceramics, plastics, etc. to meet the needs of different working conditions. The minimum inner diameter can reach 0.6mm, which is suitable for high-precision instruments, micro motors, medical equipment, model aircraft systems and other fields. According to the use environment, various structural forms such as dust cover (ZZ), sealing ring (2RS), flange edge can be selected to take into account sealing, installation convenience and operation reliability.
Miniature bearings are widely used in various equipment with limited space, precise operation, high speed and light load. They are indispensable core components in the electronics, motors, medical equipment, and aircraft models industries.
The minimum inner diameter can reach 0.6mm, and the common specifications range from 1mm to 7mm. They have the characteristics of compact structure, flexible rotation, and low noise.
（1）Small size, high precision
minimum inner diameter of 0.6mm, suitable for ultra-compact space
（2）Flexible rotation, low noise
suitable for high speed and light load conditions, stable operation
（3）Various sealing structures
provide dustproof, waterproof, anti-corrosion solutions
（4）Rich materials, strong adaptability
stainless steel, plastic, ceramic and other special materials can be selected
（4）Easy flange positioning and installation
flange design facilitates axial positioning and batch assembly
1) Electric Motors and Power Equipment: Ball bearings are essential for both small household electric motors and large industrial generators, providing precision, stability and long service life during continuous operation.
(2) Automotive Industry: Ball bearings are located in engines, gearboxes, wheel hubs, steering mechanisms, air conditioning compressors, etc., minimizing friction losses, improving power transmission efficiency, and contributing to overall vehicle performance and durability.
(3) Manufacturing Equipment and Machine Tools: Precision ball bearings in spindles, gearboxes, linear motion systems and similar applications enable high machining accuracy, extend equipment life and ensure reliable production quality.
(4) Household Appliances: Ball bearings support rotating parts in washing machines, fans, air conditioners, vacuum cleaners, etc. They help reduce noise, improve efficiency and ensure long-term performance.
(5) Medical Equipment: High-precision, low-friction ball bearings are essential for medical equipment such as CT scanners, dental drills, artificial heart pumps and similar technologies, where accuracy, reliability and biocompatibility are critical.
(6) Office and consumer electronics: Miniature ball bearings in computer cooling fans, printers, and hard disk drives improve efficiency, reduce energy consumption, and ensure quiet, smooth operation.
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Zhangzhou Dingsen Trading Co., Ltd.
