With the rapid development and increasing maturity of domestic high-precision processing equipment, more and more traditional designs are abandoned on high-precision CNC processing equipment such as CNC indexing plates, vertical machining centers, vertical lathes, grinders, etc., and better cross roller bearings are adopted. It has the characteristics of high rotation accuracy and speed, large load-bearing capacity, small size, strong rigidity, etc., and has a wide range of uses and advantages that other bearings cannot match.
HRBH type (inner and outer rings are integral without mounting holes), since the outer and inner rings have no mounting holes, flanges and support seats are required for fixing during installation. In addition, since the outer and inner rings are both integral structures, installation has no effect on performance, so stable rotation accuracy and torque can be obtained, which is suitable for occasions where the outer and inner rings rotate but have size miniaturization requirements.
HRU type (inner and outer rings are integral, with mounting holes), since both the outer and inner rings have mounting holes, solid flanges and support seats are not required during installation. In addition, since the outer and inner rings are both integral structures, installation has almost no effect on performance, so stable rotation accuracy and torque can be obtained, which is suitable for occasions where the outer and inner rings rotate.
The inner and outer rings of the HRW bearings are designed with an integrated structure. Due to the double-row rolling surface and the use of small-diameter rollers, the number of rollers is about 5 times that of the conventional cross roller ring RU type* (RW228 type). While maintaining compactness, improving rigidity and precision, the torque is also reduced. Since the size and number of mounting bolt holes are designed optimally, the deformation of the rolling surface caused by installation can be reduced, thereby obtaining stable rotation performance.
Crossed tapered roller bearings consist of two rows of mutually perpendicular bearing raceways and rollers. The rollers are arranged alternately on the raceways, and the bearing assembly height is slightly higher than that of single-row tapered roller bearings. In addition, the inclination angle of the bearing raceway and the geometry of the tapered rollers protect the bearings and will not cause stress concentration problems during use. Finally, the effective span of the cross tapered roller bearing is many times larger than the bearing width.
Since the outer dimensions are miniaturized to the maximum, and the bearings have high rigidity, rotational accuracy and composite load-bearing capacity, they are most used in the joints or rotating parts of industrial robots, rotary tables of machining centers, rotating parts of manipulators, precision rotary tables, medical machines, measuring instruments and other applications.
Our company supports non-standard customized design and processing of various types of high-precision bearings with an inner diameter of 20mm to an outer diameter of 2300mm. We cooperate with many universities, machine tool companies, mechanical research institutes and scientific research institutions all year round to carry out joint development of major equipment and assist customers in sample and mass production.
