crane slewing ring

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.

Palletizing robot require flexible operation, accurate point position, light and fast, so they are generally used in light and precision slewing bearings. Our company has a professional production line of this kind of product, specializing in the production of such high-precision rotary bearing, which is one of our company’s main product series. Small slewing bearing, as a key accessory of industrial robot, is an indispensable part of it. At present, from the perspective of the development trend of robots, modern robots are developing in the direction of lighter weight, precision and intelligence, which requires the supporting slewing bearing to have a lighter structure and more advanced manufacturing and assembly processes. Usually, The installation space of the industrial robot slewing bearing is very limited, and the slewing bearing must meet the performance requirements of the robot host for the bearing capacity, stiffness, precision and friction torque of the slewing bearing in the limited installation space. It is difficult to meet this requirement by selecting standard slewing bearings, and light slewing bearings can solve this problem well. This kind of slewing bearing has the characteristics of small diameter and large number of steel balls, and can bear radial load, bidirectional axial load and overturning moment.