Replace Rothe Erde Slewing Bearings

With the development of intelligence and mechanization in the smelting industry, it provides irreplaceable huge business opportunities for the application of slewing bearings. Because it can be used in robotic arms, fully automatic intelligent robots, ladle rotary tables and other industries. Therefore, flexible mechanical equipment will become the general trend of many factories. The rotary table is composed of arm system software, fixed tower, rotating drive and other components. It is typically a light-loaded low-speed turning machine.
The slewing bearing of the rotary metallurgical furnace generally uses a three-row roller structure slewing bearing. This structural product is a slewing bearing with high bearing capacity, which is mainly used in the operation with a large load. It is composed of three ferrules, the upper and lower rows of rollers are horizontally distributed, and the radial force is borne by the three rows of rollers arranged vertically, so it can bear the axial force and tilting moment from two directions. This kind of large three rower slewing bearing is our featured product with advantages of high load, high precision and long service life.

The single-row cross-roller slewing bearing consists of two rings, with compact structure, high manufacturing accuracy, small assembly clearance, and high requirements for installation accuracy. It can bear overturning moment and large radial force and it is widely used in transportation, construction machinery and military products.
There are two basic working modes: 1. The inner ring fixes , and the outer ring rotates; 2. The outer ring fixes and the inner ring rotates. The raceways of the slewing bearing are all treated by surface induction hardening, and the quenching hardness is guaranteed to be HRC55~62, which can achieve sufficient hardened layer depth.
Slewing bearing is usually made with internal teeth, external teeth or no teeth. The heat treatment of gears is generally normalized or quenched and tempered. The tooth surface can also be quenched according to the user's requirements, the quenching hardness is HRC50-60, and sufficient depth can be guaranteed. Teeth grinding is also supported.

Medical equipments do not have high requirements on the load-carrying capacity of the slew ring, so the slew rings generally selected are characterized by lightness and small size. The slew ring selected for medical devices require high precision, including axial and radial clearances and surface precision, to ensure the accuracy of medical devices.
The product we made has been finely ground to improve the precision, flexible rotation and high precision. It is mostly used in automated production lines, robot arms, bases, and medical machinery with stable quality.

The double row ball slewing bearing has three seat rings. The steel balls and isolators can be directly arranged into the upper and lower raceways. According to the stress conditions, the upper and lower rows of steel balls with different diameters are arranged. This kind of open assembly is very convenient. The bearing angle of the upper and lower arc raceway is 75 degrees. It can bear a great deal of axial force and overturning moment. When the radial force is greater than 0.1 times the axial force, the raceway must be specially designed. The axial and radial dimensions of the double row ball slewing bearing are relatively large and the structure is fastened. It is especially suitable for handling tower cranes, truck cranes and other loading machines that require medium or above diameters, military products.
The double-row four-point contact ball slewing bearing structure is similar to the single-row ball slewing bearing, the difference is that it uses two rows of steel balls as rolling elements, the two rows of steel balls have the same size, and a single isolation block is set between the steel balls. The inner and outer rings are integral, and the steel balls are loaded by plugging the holes. It requires a product for a heavy-duty, radially constrained host.
Double row different diameter ball slewing bearing structure is characterized by the upper and lower double-row steel balls, inner and outer rings, isolation blocks and lubrication and sealing devices. However, the double-row different diameter slewing bearing is a three-piece slewing bearing, and its structure is more complicated.

Flange slewing bearings are light in weight, thin in thickness, and flexible in movement. It is widely used in food machinery, filling machinery, environmental protection machinery, etc. The flange slewing ring bearing mainly includes outer and inner rings, grease fittings, sealing strips, gaskets, load plugs and taper pins, and its characteristics are: both the inner and outer rings are L-shaped; the sides of the rings are provided with grease cups, and the outer Steel balls are assembled between the ring and the inner ring. Each ball is separated by a spacer, and the steel ball and the spacer are installed through a load plug and a tapered pin to protect the running of the ball.

1. The work is simple and sensitive, and the rotation resistance is small.
2. The structure is compact and the dimensions (mainly height) are small.
3. Convenient maintenance and long service life.
4. It is composed of ring gear, seal and screws, etc. It is easy to install and convenient for specialized centralized production.
5. There is no intermediate pivot, and other components can be installed in the middle space.