53318
53000 Series Self-Aligning Thrust Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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53318 Bearing Product Overview & Core Advantages
The 53318 is a metric thrust ball bearing engineered for demanding applications requiring high axial load capacity and precision. As a dedicated thrust bearing, it is specifically designed to accommodate heavy axial loads in one direction while maintaining stable operation. Its construction from high-grade 52100 Chrome Steel for both rings and balls ensures exceptional durability and wear resistance. This bearing is characterized by its robust design, making it an ideal choice for high-reliability scenarios where space is constrained and axial forces are predominant.
53318 Bearing Model Code Explained, Specifications & Naming Convention
The model number 53318 follows a standard designation system for metric thrust ball bearings. While this specific model is an "Open" type, the code primarily defines its core geometry and type.
- 5: Indicates the bearing series, signifying a thrust ball bearing.
- 3: Represents the dimensional series, defining the cross-sectional size and load characteristics.
- 18: Specifies the bore diameter code. For this metric bearing, it corresponds to a 90 mm bore diameter.
- Open: Denotes that the bearing has no integral seals or shields, allowing for higher limiting speeds and suitability for centralized lubrication systems.
53318 Bearing Structural Features & Performance Benefits
The 53318's performance is a direct result of its optimized design and material selection.
- High Axial Load Capacity: The bearing's geometry and use of 52100 Chrome Steel components provide a high axial dynamic load rating of 40,950 lbf and an exceptional axial static load rating of 99,000 lbf, enabling it to withstand significant thrust forces.
- Precision Ground Components: The tight tolerances on the bore, outside diameter, and width ensure precise shaft and housing fits, contributing to reliable performance and accurate axial positioning.
- High-Speed Capability: The open design, combined with a stainless steel cage, facilitates efficient lubrication and heat dissipation, supporting a limiting speed of 2,000 rpm.
- Durability and Corrosion Resistance: The stainless steel cage offers excellent resistance to corrosion and is suitable for a wide operating temperature range from -30°C to 110°C.
53318 Bearing Typical Application Areas
The 53318 thrust ball bearing is ideally suited for machinery and equipment that experience high unidirectional axial loads. Common applications include:
- Heavy-Duty Industrial Gearboxes
- Vertical Pumps and Compressors
- Cranes and Hoisting Equipment
- Machine Tool Tables and Saddle Drives
- Automotive Steering Systems
