MR105 Deep groove ball bearing
| MR105 Deep groove ball bearing | |||
|---|---|---|---|
| Part Number | MR105 | Ball Number | 8 |
| d | 5 | Ball Size | 1.2 |
| D1 | 10 | Dynamic Load Co(N) | 4750 |
| B | 3 | Static Load Cor(N) | 1680 |
| R | 0.15 | Grease Speed | 50000 |
| Weight(Kg) | 0.00125 | Oil Speed | 60000 |
MR105 Miniature Deep Groove Ball Bearing | Open, ZZ, 2RS High Precision Bearings
The MR105 deep groove ball bearing is a high-precision miniature bearing designed for ultra-compact, space-restricted micro mechanical systems that require stable high-speed performance, low noise and long service life. Built with precision miniaturized dimensions, mirror-polished raceways and premium rolling elements, this single-row micro bearing delivers ultra-low friction, minimal vibration and outstanding dimensional stability during continuous cyclic operation. Optimized for light-load precision equipment, the MR105 features a compact slim structure, reliable rigidity and consistent wear resistance, perfectly matching modern miniaturized electromechanical devices. Available in three standard industrial types, including open type, MR105ZZ double metal shield type and MR105-2RS double rubber sealed type, this bearing comes with five industrial-grade materials to adapt to economical, sanitary, high-wear and corrosive working environments for various micro-precision industrial applications.
MR105 Open / ZZ / 2RS Structural Features
MR105 Open Type: The unsealed open structure enables unobstructed air circulation and efficient heat dissipation, effectively preventing thermal accumulation during prolonged high-speed micro operation. It supports easy grease refilling and simple routine maintenance without extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed micro precision machinery, it maintains ultra-high running accuracy and stable long-cycle performance for lightweight micro assemblies.
MR105ZZ Double Metal Shields: Equipped with dual non-contact steel shields, the MR105ZZ miniature bearing effectively blocks fine dry dust, floating micro particles and tiny industrial debris. The non-contact protective design preserves original high-speed smoothness and micro precision with negligible friction loss. Featuring stable durability and excellent cost performance, it is widely used in dry working conditions for micro high-speed motors, drone components, optical instruments and miniature transmission systems.
MR105-2RS Double Rubber Seals: The fully sealed MR105-2RS variant adopts double-sided contact rubber seals to comprehensively isolate moisture, water splashes, oil mist and corrosive fine dust. It tightly locks internal micro lubricant to prevent leakage, oxidation and aging, realizing long-term maintenance-free operation. This versatile sealed model operates stably in humid, dusty and mildly harsh scenarios for portable micro precision devices and outdoor miniature electromechanical equipment.
MR105 Bearing Material Performance
Carbon Steel: High cost-performance industrial base material with uniform hardness and stable anti-fatigue properties. It delivers reliable wear resistance and smooth high-speed rotation for conventional micro precision machinery, ideal for mass production and cost-sensitive miniature equipment projects.
304 Stainless Steel: Food-grade stainless steel with superior rust and oxidation resistance. It prevents micro corrosion in humid and open environments, suitable for food processing accessories and sanitary-grade micro precision equipment.
316 Stainless Steel: Marine-grade corrosion-resistant material with excellent tolerance to acid, alkali and salt spray. It withstands coastal humidity and mild chemical exposure, perfect for marine micro instruments and light chemical miniature machinery.
420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. It maintains stable wear resistance and precise dimensional stability during continuous high-speed micro cyclic operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance. It ensures accurate and stable micro operation under severe wear and corrosive conditions, optimized for high-end micro precision mechanical systems.
Core Advantages And Industrial Applications
The MR105 deep groove ball bearing features an ultra-compact miniature structure, lightweight design, ultra-quiet operation and durable high-speed precision. Three sealing configurations and five professional material grades fully meet industrial requirements for economy, rust resistance, wear resistance and corrosion resistance. It is widely applied in miniature high-speed motors, drone precision parts, optical instruments, micro transmission components, portable micro power tools and compact medical devices. Serving as a critical ultra-small rotary component for space-limited micro systems, the MR105 bearing provides high-efficiency, low-maintenance and ultra-precise rotation solutions for modern miniaturized industrial and commercial precision equipment.
