6914 Deep Groove Ball Bearing | Open, ZZ, 2RS Ultra-Thin Precision Bearings

The 6914 deep groove ball bearing is a high-load ultra-thin precision component in the 6900 series, equipped with thickened reinforced raceways and optimized rolling element configuration to enhance structural rigidity and stable medium-load capacity. Designed for ultra-compact, space-constrained industrial installation scenarios, this single-row thin-wall bearing delivers low-friction steady rotation, superior dimensional accuracy and long-lasting anti-fatigue performance. It supports continuous ultra-quiet, high-speed cyclic operation, serving as a core rotary part for medium-sized miniaturized electromechanical equipment and industrial precision transmission systems. The 6914 series includes three standard industrial specifications: open type, 6914ZZ double metal shield type and 6914-2RS double rubber sealed type, with five industrial-grade materials to adapt to economical, sanitary, wear-resistant and corrosive complex working environments.

6914 Open / ZZ / 2RS Structural Features

6914 Open Type: The unsealed open structure ensures unobstructed air circulation and efficient heat dissipation, effectively preventing thermal accumulation during long-duration high-speed operation. It enables tool-free grease replenishment and simple routine maintenance without generating extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed precision equipment, it maintains stable running accuracy and consistent performance during long-cycle medium-load operation.

6914ZZ Double Metal Shields: Featured with dual-sided non-contact steel shields, this professional dust-proof bearing effectively blocks fine dry dust, floating micro particles and industrial debris. The non-contact protective design retains original high-speed precision and rotational smoothness with minimal friction loss. Boasting stable durability and outstanding cost performance, 6914ZZ bearings are widely applied in dry high-speed miniature motors, precision consumer electronics, automated micro components and compact industrial transmission systems.

6914-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals to comprehensively isolate moisture, water splashes, oil mist and corrosive fine dust. It tightly locks internal lubricating grease to prevent leakage, oxidation and aging, realizing long-term maintenance-free operation. It stably adapts to humid, dusty and mildly harsh working conditions for outdoor and industrial high-precision electromechanical devices.

6914 Bearing Material Performance

Carbon Steel: High cost-performance standard industrial material with uniform hardness and stable anti-fatigue properties. It provides reliable wear resistance and smooth high-speed rotation for conventional precision equipment, delivering optimal cost efficiency for mass electronic and industrial batch applications.

304 Stainless Steel: Food-grade stainless steel with excellent oxidation and rust resistance. It resists surface corrosion and precision degradation in humid and open environments, suitable for food processing machinery, sanitary equipment and daily precision electromechanical devices.

316 Stainless Steel: Marine-grade corrosion-resistant material with strong tolerance to acid, alkali and salt spray. It withstands mild chemical corrosion and coastal high humidity, perfect for marine precision parts, sanitary instruments and chemical processing equipment.

420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. It features stable wear and impact resistance, maintaining accurate dimensional stability during long-term continuous high-speed operation.

440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It sustains precise, stable operation under severe wear and corrosive conditions, customized for high-end ultra-thin precision industrial equipment.

Core Advantages And Industrial Applications

The 6914 deep groove ball bearing integrates an ultra-thin compact structure, lightweight design, ultra-low noise and durable high-speed precision performance. Three diversified sealing structures and five professional material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion precision application scenarios. It is extensively utilized in precision miniature motors, smart wearable devices, consumer electronics, small household appliances, micro medical devices, automated mechanical components and light-duty sanitary machinery. This ultra-thin bearing provides compact, low-maintenance and high-efficiency precision rotation solutions for modern space-limited miniaturized mechanical systems, meeting diverse commercial and industrial precision operation requirements.