Double Row Ball Slewing Bearings

The double row ball slewing bearings have two-row steel balls for structure. It has a bigger load capacity than a single row slewing bearing. It has a better safety factor and could simultaneously bear axial load, radial load, and tilting moment. The double row slewing ring has three seat rings. The steel ball and the spacing block can be directly arranged into the upper and lower races, and two rows of upper and lower steel balls with different diameters are fitted according to the stress condition. The double row ball slewing bearing ring’s axial and radial size are relatively large and solid, so it is usually used in diameter tower cranes, truck-mounted cranes, etc. The double row slewing bearing ring is mainly made of 50Mn, 42CrMo, and C45.

Product parameters

(1) Model and size parameters of external gear double-row ball slewing bearing

(2) Internal gear double-row ball slewing bearing model size parameters

Features of double row ball slewing bearing

1. For mid-to-heavy load applications

2. Suitable for vibration conditions

3. Require less demanding mounting structure

4. Provide a high load for a restricted installation space

5. Available in gearless, internally geared, and externally gear versions

6. Available in induction hardened gears

7. Typical sizes range from 300mm-2000mm, with other sizes upon request.

8. Available with different corrosion protection coatings

9. Mating pinions are available for all slewing bearings.

Applications of double row ball slewing bearing

Double row ball slewing bearings have widely applications.  Such as earthmoving machinery, excavators, disintegration machines, stacker reclaimers, graders, road rollers, powerful boring machines, rock drilling machines, roadheaders, etc.

Others include concrete machinery: concrete pump trucks, concrete mixing and distribution booms, belt conveyors, feeding machines: disc feeders, sand mixers; lifting machinery: wheeled cranes, crawler cranes, doors, Seat cranes, tower cranes, forklifts, cranes, gantry cranes; ground-based processing machinery: impact reverse circulation drilling rigs, rotary drilling rigs, move rotary drilling rigs, rotary drilling rigs, reverse circulation rotary drilling rigs, positive circulation Rotary drilling rig, long spiral engineering drilling rig, diving engineering drilling rig, static pressure pile machine, pile driver; engineering ship: dredger; particular vehicle: bridge inspection vehicle, fire truck, window cleaning machine, flat beam truck, aerial work vehicle, Self-propelled aerial work platform; light industrial machinery: beverage machinery, blow molding machine, packaging machinery, filling machine, rotary bottle unscrambler, injection molding machine; marine crane: floating crane.

Company Information

We are a professional manufacturer and supplier of slewing bearings; We make all kinds of slewing bearings, such as four-point contact ball slewing bearings, single row cross roller slewing bearings, double-row ball slewing bearings, three-row roller slewing bearings, flange slewing bearings, light series slewing bearing. We are capable of designing and manufacturing non-standard slewing bearings independently. Our products’ applications in various applications, such as port, ship, vehicle, mining, engineering, lifting, environmental protection, oil, chemicals, light industry, metallurgical machinery, the military, etc. With thirty years of experience, widely export our products to the USA, Germany, Japan, Spain, Canada, Italy, France, Finland, Korea, India, Singapore, Brazil, Australia, etc. If you need slewing bearing, please feel free to contact us.