spherical plain bearing

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

Spherical plain bearings are versatile and robust components designed to accommodate a wide range of movements and loads in various industrial and mechanical applications. Here's a detailed introduction to spherical plain bearings:

1. Functionality:

• Spherical plain bearings, also known as spherical bearings or spherical rod ends, offer multi-directional rotational motion and are capable of handling angular misalignment more effectively than other types of bearings.

2. Construction:

• These bearings consist of a spherical inner ring and an outer ring that can move against each other. The inner ring connects to the shaft, while the outer ring is mounted in the surrounding structure. They are designed to transmit static and dynamic loads directly via the sliding surface to the machine elements, making them a type of sliding bearing.

3. Types:

• There are two primary types of spherical plain bearings: radial and angular contact. Radial spherical plain bearings are designed for high load-carrying capability primarily in the radial direction, while angular contact spherical plain bearings are intended for high load-carrying capability mainly in the thrust or axial direction.

4. Materials and Friction Pairings:

• Spherical plain bearings can have sliding interfaces lined with materials like PTFE (polytetrafluoroethylene) for improved lubrication and wear resistance. Common friction pairings include steel/bronze, steel/steel, or steel/PTFE. Steel/bronze and steel/steel pairings require lubrication and are subject to maintenance, while the steel/PTFE pairing is maintenance-free.

5. Applications:

• Spherical plain bearings are used in a variety of applications, including agriculture, construction, forklift trucks, material handling, metals, mining, railways, trucks, and wind energy. They are particularly useful in applications that require spatial adjustment movements between the shaft and housing, swivel movements, tilting movements up to a certain angle, and orbital movements at relatively low sliding speeds.

6. Advantages:

• Some key advantages of spherical plain bearings include their ability to compensate for misalignment, handle oscillating movements, and support heavy loads. They are suitable for applications with alternating loads, medium to large swivel movements, and medium sliding speeds.

7. Maintenance:

• Bearings with steel/bronze and steel/steel friction pairings require regular relubrication, while those with steel/PTFE are maintenance-free and do not require any maintenance.

8. Special Types:

• Spherical plain bearings with roller bearings function similarly to self-aligning ball bearings or barrel bearings, offering high load ratings and suitability for alternating loads, large swivel movements at medium to high speeds, and full rotations at medium to high speeds.

9. Standards and Customization:

• Spherical plain bearings are subject to the standard DIN ISO 12240-1, which specifies dimensional series, dimensions, tolerances, and radial internal clearance. However, the standard is broadly defined, allowing for a large number of friction pairings, materials, and surface treatments. This can make interchangeability between products from different manufacturers challenging, but alternative products are often available.

In summary, spherical plain bearings are indispensable in various industries due to their ability to handle complex movements and loads while compensating for misalignments and offering long service life with minimal maintenance.

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