Rotary bearings, also known as slewing bearings, come in various models and designs to suit different applications. These bearings are specifically engineered to handle axial, radial, and moment loads simultaneously. While there are many manufacturers producing slewing bearings, each with their specific model designations, here are some common types of rotary bearings categorized based on their construction and design.
1. Single-Row Ball Slewing Bearings
Type 01: Single-row four-point contact ball slewing bearings are the most common type, suitable for moderate axial, radial, and moment loads.
Type 08: Single-row crossed roller slewing bearings feature crossed cylindrical rollers, providing high load-carrying capacity in a compact design.
2. Double-Row Ball Slewing Bearings:
Type 02: Double-row ball slewing bearings have two rows of balls and can support heavier loads than single-row designs.
3. Three-Row Roller Slewing Bearings
Type 13: Three-row roller slewing bearings consist of three rows of cylindrical rollers, offering exceptional load-carrying capacity and resistance to shock loads.
4. Cross Roller Slewing Bearings
Type 11: Cross roller slewing bearings feature cylindrical rollers arranged in a cross pattern. They provide high rigidity and accuracy, making them suitable for precision applications.
5. Wire Race Slewing Bearings
Type 21: Wire race slewing bearings use a wire raceway to support the loads. They are lightweight and have a compact design, often used in applications where weight and space are critical factors.
6. Specialized Slewing Bearings
Custom Designs: In addition to standard designs, manufacturers can create specialized slewing bearings tailored to specific applications, such as those requiring high precision, corrosion resistance, or extreme temperature tolerance.
Please note that these are general categories, and within each type, there can be numerous specific models and sizes, each designed for different load capacities, speeds, and operating conditions. When choosing a rotary bearing, it's essential to consult the manufacturer's catalog or contact them directly to select the most suitable model for your particular application. Different manufacturers may use unique designations for their slewing bearing models, so it's important to refer to their documentation for precise information about their offerings.