51220 ISB thrust ball bearing

ISB 51220 Thrust Ball Bearing

The ISB 51220 is a high-capacity single-direction thrust ball bearing designed to accommodate substantial axial loads acting in one direction only. The assembly features a separable design, comprising a shaft washer, a housing washer, and a ball and cage thrust assembly. Engineered for precision and low energy loss, the 51220 model provides high operational stiffness in industrial systems where radial forces are absent or negligible.

Application

• Heavy industrial gearboxes and vertical drive units.
• Crane hooks and heavy-duty lifting blocks.
• Lead screws for large-scale machine tools.
• Low-speed turntables and rotary tables.
• Regulating mechanisms in production machinery and power generation.

Technical Specification

• Manufacturer: ISB (Italy)
• Designation: 51220
• Type: Single-direction thrust ball bearing
• Series: 512
• Cage: Pressed steel
• Design: Separable components for independent mounting

Note: Standard dimensions for the 51220 model are 100 mm (Bore) × 150 mm (OD) × 38 mm (Height). Please check the ISB technical documentation for dynamic and static load ratings.

Features and Benefits

• High Axial Load Optimization – specifically designed for efficiency and durability along the shaft axis.
• Separable Components – allows for simplified installation, individual ring replacement, and easier maintenance.
• Operational Stability – even load distribution across the rolling elements ensures reliable performance under pressure.
• ISB Quality Standards – manufactured to European standards, ensuring high resistance to wear and material fatigue.
• Energy Efficient – refined raceway finishing reduces friction and heat generation during high-load operations.

Why Choose This Product

The ISB 51220 thrust bearing is a robust and dependable solution for critical industrial applications. Its straightforward design combined with high-grade steel construction ensures long-term reliability even in demanding environments. For maintenance professionals and engineers, this bearing offers a high-performance, cost-effective choice for ensuring smooth axial motion in heavy-duty machinery.