The cross roller bearing (cross cylindrical roller slewing bearing) is very similar in structure and function. For example, in terms of accuracy, it has high rigidity, high stable rotating torque and long life. On the CNC machine tool turntable and indexing plate, CNC vertical grinder, machine tool direct drive motor and other mechanical equipment, in the industrial robot shoulder, waist, wrist, elbow, finger joints, etc., as well as high-precision medical equipment, More and more high-precision CNC machining equipment such as optical equipment has abandoned the traditional design, and then uses precision cross-roller bearings with better performance.
The cross-roller slewing bearing is also known as a cross-roller slewing bearing or a cross-roller slewing bearing. Compared with the slewing bearing of the three-row roller combination structure, it has small size, high precision, high rigidity, large load bearing capacity and resistance to damage. point. Cross-roller slewing bearings are often used in large-scale rotary devices such as bucket turbines, overweight transportation machinery, port machinery, mining machinery, park amusement machines, filling machines, construction machinery and missile launchers. Very important help. Precision cross cylindrical roller bearings have many advantages such as high rotation precision, strong resistance to deformation, large bearing capacity and flexible structural design. They are widely used in the joint and rotary parts of industrial robots, CNC rotary tables, precision test turrets, and opticals. Precision equipment such as telescopes and large radar antennas. The slewing bearing plays a vital role as the core component in the precision slewing equipment. The main factors affecting the bearing rotation accuracy are bearing manufacturing precision and bearing rigidity.
The rolling elements of the cross-roller bearing are generally cylindrical or tapered rollers arranged in a crisscross pattern in a single track groove, and the rollers are spaced apart by a brass retainer or an engineering plastic spacer to have a high rotation. Accuracy, large load capacity, small form factor, high rotational speed and rigidity, and a wide range of applications. Crossed roller bearings are suitable for industrial robot joints, CNC rotary tables, DD motors, medical equipment and other fields.
Advantages of crossed roller bearings
1. The cross roller bearing can be easily assembled in all directions of the main shaft. It can be mass-produced through standardization and serialization, and it is convenient to assemble and use.
2. Cross-roller bearings can withstand both radial and axial loads, so cross-roller bearings can be much more simplified than multiple sets of combined bearing structures.
3, cross roller bearing due to high rotating power and low heat dissipation, lubricating grease consumption is small.
4, the cross roller bearing radial and axial dimensions can be limited, so save space, you can use the high-precision, high-rigidity occasions with small space requirements.
