slewing ring

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.

1. With good moment, thrust and radial loading capacity. 2. Suitable for light to medium duty. 3. Easy installation 4. light weight and thin section 5. Flexible rotation

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.

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 material pitch bearing rings is 42CrMo, the heat treatment adopts the overall quenching and tempering treatment, and the surface of the raceway is quenched. The force of pitch bearings is complex, and the impact and vibration are relatively large. Therefore, the bearing is required to withstand both impact and large load. The life of the wind turbine main engine is required to be 20 years, and the cost of bearing installation is relatively large, so the life of the yaw and pitch bearings is required to reach 20 years. The hardness of the bearing ring base is 240-280HB, which can withstand impact without plastic deformation. At the same time, the surface quenching hardness of the raceway reaches 55-62HRC, which can increase the contact fatigue life and ensure the service life of the bearing.

Slewing ring is widely used in construction equipment like excavators. It is wear parts. We are specialized in the production of engineering machinery slewing bearings, drive shafts and matched pinions. If you need replacements of the steel balls, rollers or spacers, it is also available. For some common model excavators slewing bearing, we have ready stock and can deliver within one week. EX200, EX300, ZX470-5 is the hot selling models. If you have old slewing bearing in hand, we can instruct you to measure the detailed size to make a professional drawing and then manufacture it for you. Our company has a special quality testing laboratory, devoted to product design and development, product application and testing methods. At the same time, the company also has advanced production equipment and testing equipment to ensure that products have high performance, long life, low friction, high precision.

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.

Slewing bearing is an important "joint" of the crane. Various loads and moments on the working device need to be transmitted to the chassis through the slewing bearing. Because the slewing bearing is overloaded, it is also the part where the crane is prone to failure, so it is necessary to install a new slewing bearing after long-term use. Truck cranes, crawler cranes and other heavy construction cranes are usually using large single row four-point contact ball slewing ring bearing. This type of slewing bearing can bear larger axial load, radial load and tilting moment, enabling crane to lift heavy loads stably and reliably. To improve the manufacturing accuracy and working life of the slewing bearing, we focus on the heat treatment process, raceway quenching to prevent quenching cracks on the surface of the raceway. For high precision products, precise grinding is used to effectively control the parameters of ring ellipse, wall thickness and flatness, so as to ensure that the precision of finished products meets the requirements of standards or customer drawings. So our slewing bearings are with features of high precision, long working life and durable to use.

Tunnel boring machine as known as shield machine, is the main construction machinery in the process of shield construction. It must have high reliability and be able to work steadily and reliably. The main bearings of large-scale shield machine mostly adopt three rows roller slewing bearings, which need to bear large axial force and overturning moment, and also bear certain radial force. The loading situation is complex, and it is easy to produce large deformation, which affects the construction safety of the shield machine. The slewing includes an upper ring and a lower ring. The upper ring is connected with the lower ring by bolts to form an outer ring structure. The gear ring is located in the inner ring structure. The side of the gear ring is provided with a convex platform. The upper ring and upper ring of the convex platform are provided with an upper raceway, the upper raceway is equipped with an upper row of rollers, the lower raceway is equipped with a lower row of rollers, and the side and outer ring of the convex platform are equipped with a lower row of rollers. There is a radial raceway between them, and a radial roller is arranged in the radial raceway. The inner edge of the upper ring and the upper end of the gear ring are connected with double sealing rings, and the lower end of the gear ring is connected with a lower sealing belt.