Automotive / Industrial 51203 Thrust Bearing , 17x35x12 Bearing High Axial Load​

The 51203 bearing, a member of the thrust ball bearing family, is engineered to handle axial loads with precision and reliability. Its design makes it a vital component in a wide range of mechanical systems, ensuring smooth operation and extended service life.

• Axial Dynamic Load Rating: With a capacity of 16.3 kN, the 51203 bearing can handle continuous or intermittent axial forces, making it suitable for applications such as pumps, compressors, and machine tools.
• Axial Static Load Rating: The bearing can support a static axial load of 27 kN without permanent deformation, ensuring stability during standby or start-stop cycles.

• Reference Speed: The 51203 bearing has a reference speed of 6700 r/min, indicating the rotational speed at which it can operate under normal conditions with optimal performance and reliability.
• Limit Speed: It can reach a limit speed of 9500 r/min, but operating near this speed requires careful consideration of factors such as lubrication, load, and temperature to avoid premature failure.

The cage is typically made of steel, which offers high strength and durability. It plays a crucial role in guiding the balls, ensuring their even distribution and smooth movement between the raceways, thus reducing friction and enhancing the bearing's performance.

• Lubrication: Grease lubrication is commonly used for general-purpose applications, providing long-lasting protection and reducing contamination. In high-speed or extreme-temperature environments, oil lubrication may be preferred for better cooling and performance. Some bearings come pre-lubricated for easy installation.
• Sealing: The 51203 bearing offers various sealing options, including rubber seals for protection against dust, dirt, and moisture, and metal shields for more robust protection against larger debris. Sealed bearings are especially useful in harsh or dirty operating conditions.

The 51203 bearing features a separable design, with components such as the shaft ring, seat ring, and rolling elements (balls) that can be separated. This design simplifies installation, disassembly, and maintenance, allowing for easy inspection and replacement of individual parts.

The bearing consists of a set of balls positioned between two raceways. One raceway is associated with the shaft (shaft ring), and the other with the housing (seat ring). This configuration enables efficient transfer of axial forces, as the balls roll between the raceways, minimizing friction and ensuring smooth operation.

• Transmission Systems: In automotive transmission systems, the 51203 bearing supports the axial loads generated during gear shifting, ensuring smooth operation and reducing the risk of gear-jumping or misalignment.
• Steering Columns: It is also used in steering columns to support the axial loads on the steering shaft, providing smooth and responsive steering.

• Vertical Pumps: The 51203 bearing is used in vertical pumps to support the axial loads from the impeller and fluid pressure, ensuring efficient pump operation and reducing the risk of premature failure.
• Machine Tools: In machine tools like lathes and milling machines, it supports the axial loads associated with cutting forces, ensuring accurate machining and high-quality finishes.

• Fitness Equipment: In exercise bikes and elliptical trainers, the bearing supports the axial loads during user operation, ensuring smooth and quiet operation.
• Small Appliances: It is used in small appliances such as electric fans and food processors to support the axial loads on the motor shaft, reducing vibration and noise.