turntable bearing (Slewing ring bearing, Swing Gears, Swing Bearings, Slewing Rings, Slew Rings)

WELCOME TO SBI® BEARINGS. Turntable Bearings, or slewing ring bearings are a SBI® specialty. We offer bearings of high-precision, high-speed and high-quality, which are widly used in many fields such as aerospace, aviation, navigation, metallurgy, petroleum, chemicals, power generation, pulp and paper, textiles, shipyards, mining machinery, engineering machinery, machinery, railways, automobiles, beer, cigarettes, household appliances, electrical and mechanical manufacturing, and so on. Typical applications include swing bearings (slewing rings) for cranes, excavators, aerial work platforms, gun turrets, radar pedestals, forestry equipment, agricultural vehicles, surveillance equipment, scanner equipment, excavators, cranes, tunneling machines, or material handling equipment. SBI® offers light- to medium-duty turntable bearings or heavy-duty turntable bearings for even greater load-handling capabilities.

Slewing rings or Turntable bearings are our specialty. SBI® slewing ring bearings ( turntable bearing) range cover the four-point contact ball slewing ring bearing / Four contact ball slewing bearing( turntable bearing), double direction angular contact thrust ball slewing ring bearing / Double-row ball slewing bearing( turntable bearing), cross roller slewing ring bearing / Crossed roller bearing( turntable bearing), triple-row cylindrical roller slewing ring bearing / Three row roller slewing bearing( turntable bearing).We adopt China state standard (JB/T 2300-1999) to manufacture slewing ring bearing( turntable bearing), also we can adopt other standard (such as API 2C) according to customer requirement. Our best-known product, available in several versions and sizes, for the most varied load conditions. SBIbearing also offers light- to medium-duty and heavy-duty turntable bearings, or custom bearings. Submit your online Bearing Application Data Sheet or call SBIbearing for free design assistance in selecting the right thin section bearing for your application.

About Slewing Rings and Turntable Bearings
Slewing rings and turntable bearings can accommodate axial, radial and moment loads. They are not housed or mounted on a shaft, but are instead mounted directly to a seating surface. The inner and outer rings are supplied with mounting holes and often include internal or external gears. There are several basic types of products. Single-row slewing rings and turntable bearings feature a single row of balls, a standard bearing raceway, and four points of contact between the balls and raceway. Double-row products feature two rows of ball bearings, two raceways, and eight points of contacts for each ball. Slewing rings and turntable rings with three independent rows of rollers are also available. Cross rollers have a single row of rollers with the axes of alternating, adjacent rollers at right angles to one another. Slewing rings and turntable bearings with a single row of balls and a single row of rollers are designed for small radial runout and high thrust roads. Typically, inserted raceways are made of wire and use either a ball or roller as the contact element.    

Slewing rings and turntable bearings vary in terms of physical dimensions and operating specifications. Bore size, outside diameter and overall width are the most important physical dimensions to consider. Metric bores are measured in millimeters (mm) and specified according to a standard numbering system that ranges from 00 (10 mm) to 20 (100 mm). Bore sizes 00, 01, 02, and 03 are 10 mm, 12 mm, 15 mm, and 17 mm, respectively. For bore sizes 04 and up, multiplying the bore size by 5 yields the bore diameter. Slewing rings and turntable bearings that are measured in inches (in) or fractions of an inch are also available. For flanged bearings, the outside diameter excludes the size of the flange. Overall width includes the size of the locking collar, if present. In terms of operating specifications, the most important measurements to consider are static axial or thrust load, static radial load, and moment load. Typically, these specifications are measured in pounds (lbs) or feet-pounds (ft-lbs).