The 51111 Thrust Ball Bearing is a high-precision, single-direction bearing designed to accommodate axial loads while providing smooth, efficient rotation under pressure. Engineered for applications where axial load support is critical and radial loads are minimal or absent, this bearing offers reliable performance in both industrial and mechanical environments.
Constructed from high-quality chrome steel (GCr15), the 51111 bearing features excellent hardness, wear resistance, and fatigue life, making it suitable for continuous operation under demanding conditions. Its design includes two precision-machined washers—shaft washer and housing washer—and a cage assembly with high-grade steel balls, allowing the bearing to maintain alignment and reduce friction effectively.
Key Features:
Axial Load Support: Specially designed to handle axial (thrust) loads in one direction.
High Precision: Manufactured to exacting tolerances for stable, low-noise operation.
Durable Material: Made from high-carbon chromium bearing steel for long service life.
Easy Installation: Simple three-part design allows for quick assembly and maintenance.
Low Friction: Smooth ball-cage assembly reduces friction and wear, improving efficiency.
Typical Applications:
Machine tool spindles
Automotive steering systems
Gearboxes and reducers
Electric motors
Hydraulic and pneumatic systems
Pumps and compressors
Technical Specifications:
| Parameter | Value |
|---|---|
| Bearing Model | 51111 |
| Type | Single-direction Thrust Ball Bearing |
| Bore Diameter | 55 mm |
| Outer Diameter | 78 mm |
| Width (Height) | 16 mm |
| Dynamic Load Rating | Varies by brand (~39 kN) |
| Static Load Rating | Varies by brand (~103 kN) |
| Limiting Speed | Approx. 2800 – 4000 RPM (depending on lubrication) |
| Material | Chrome Steel (GCr15) |
The 51111 bearing is a trusted solution for systems that require high axial load capacity, reliable rotation, and easy maintenance. Its compact design and robust construction make it an essential component in a wide range of industrial and mechanical systems.
