51105 Thrust Ball Bearing | Large Size Single Direction Axial Load Bearings

The 51105 thrust ball bearing is a large-size single-direction axial bearing in the 5110 series, engineered for high axial load and heavy-duty precision positioning scenarios. Compared with small-size 5110 series models, the 51105 bearing adopts enlarged raceway and steel ball structure, delivering significantly higher load capacity and structural stability. This open detachable thrust bearing is strictly designed for unidirectional axial force, not suitable for radial load. With multiple industrial-grade material options, it provides reliable wear-resistant and anti-corrosion solutions for heavy machinery and harsh working environments.

51105 Thrust Bearing Structure And Functional Advantages

Consisting of a separable shaft washer, housing washer and precision steel ball assembly, the 51105 thrust bearing features a fully open split structure for easy on-site installation, disassembly and regular lubrication maintenance. The optimized deepened raceway design disperses axial pressure evenly, reducing running friction and mechanical fatigue during long-term heavy-load operation. It effectively limits axial shaft movement, minimizes rotational shaking and maintains stable vertical operation, making it a key component for heavy-duty axial support systems.

51105 Bearing Material Characteristics And Industrial Applications

High Carbon Chrome Bearing Steel (GCr15): Standard industrial material for heavy-duty thrust bearings, featuring ultra-high compressive strength, excellent fatigue resistance and long service life under continuous heavy load. It offers stable mechanical rigidity and outstanding cost performance, widely used in heavy industrial machinery, vertical rotating shafts, lifting equipment, construction machinery and general heavy-load axial transmission systems.

304 Stainless Steel: Provides reliable atmospheric anti-rust and anti-oxidation performance, suitable for humid, dusty and open working conditions. It maintains stable low-friction rotation under conventional loads, serving as an economical anti-corrosion option for general outdoor machinery, food industry auxiliary equipment and light industrial heavy-load positioning parts.

420 Stainless Steel: Combines high hardness and mechanical toughness with mild corrosion resistance, resisting daily mechanical wear and weak chemical erosion. It performs stably under frequent variable-load operation, ideal for precision heavy-duty instruments, medical auxiliary machinery and high-precision industrial positioning equipment.

440C Stainless Steel: Features extreme surface hardness and superior abrasion resistance, with strong tolerance to medium corrosive and damp industrial environments. It avoids premature wear, jamming and rust failure in complex workshop conditions, extensively applied in automated heavy-duty production equipment, hydraulic machinery and chemical auxiliary devices.

316 Stainless Steel: High-end anti-corrosion material with excellent salt spray, acid and alkali resistance, adapting to severe corrosive and high-humidity working scenarios. It is widely adopted for marine heavy-duty accessories, food sanitation processing machinery, chemical experimental equipment and sterile industrial mechanical systems.

Core merits And Industrial Coverage

The 51105 heavy-duty thrust ball bearing excels in large load capacity, stable axial positioning, low-friction operation and flexible material customization. Its detachable open structure simplifies maintenance and improves equipment assembly efficiency. It serves a wide range of industries including heavy industry, industrial automation, precision instrumentation, food processing, marine engineering and chemical equipment, providing durable and high-stability axial load-bearing solutions for medium and heavy vertical mechanical systems.