KMI Hollow Rotating Platform Gearhead HRG-280
Product model: HRG-280

1. Bearing supporting the rotating platform: the type of bearing used for the rotating platform.
2. Allowable torque: acceleration torque and load variation shall also be used below the allowable torque.
3. Inertia: the sum of the converted values of the rotor inertia of the motor part and the inertia of the reduction mechanism part on the rotating platform
4. Resolution: it means the number of pulse waves required for one revolution of the rotating platform.
5. Repeated positioning accuracy: the value indicating how much error occurs when the same position is repeatedly positioned from the same direction.
6. Positive and reverse angle error: it means the difference between the stop angle when the rotating platform is positioned from the positive direction and the reverse direction.
7. Angle transmission error: it means the difference between the logical operation angle of the rotating platform calculated from the input pulse number and the actual operation.
8. Allowable thrust load: refers to the allowable value of axial load applied from the axis direction of the rotating platform.
9. Allowable inertia load: when the load is applied at a position eccentric to the center of the rotating platform, the force that makes the rotating platform tilt will appear. At this time, the value calculated from the center to eccentric x load is the allowable value of inertia load.
10. Parallelism of the rotating platform: it indicates the inclination of the mounting surface of the rotating platform relative to the equipment side mounting surface of the brake.

Product data
Order number
Processing customized
Article number
Hollow rotating platform gearhead
Motor type
1000W servo motor
Rotary platform bearing
Cross roller bearing
Rated torque
Rated speed
Reduction ratio
Repeated positioning accuracy
Rated axial load
Rated inertia moment load

1. It can be matched with 100-750w servo motor
2. The working object can be locked directly
3. The rotating disk surface can directly lock the working objects and improve the convenience of workpiece loading
4. It is convenient for wiring. This rotating platform is hollow design, which is convenient for wiring or piping
5. High accuracy, positioning accuracy less than one minute, and repeated positioning accuracy up to ± 15sec
6. The operation is stable, the disk surface is smooth, and the positioning is fast
7. Suitable for all kinds of motors. The hollow rotating platform can be driven by various brands of servo motors

Hollow structure
The rotary table of the hollow rotating platform is of hollow structure, and the servo motor is connected at the side, which is convenient for the installation of gas pipes and wires in the metallurgical tools.
High repeat positioning accuracy
The hollow rotating platform adopts single-stage helical gear deceleration to increase the output torque, and the gear accuracy level is below level 5. In addition, the flexible gap adjustment mechanism controls the side clearance by changing the center distance of the two gears, so that the hollow rotating platform's air return is very small, and the repeated positioning accuracy is below 5 arc seconds.
High rigidity
The rotary table of the hollow rotating platform is supported by a set of precision cross roller bearings. The rollers in the bearings are arranged in a 90 degree staggered way, and the roller diameter is slightly larger than the raceway size between the inner ring and the outer ring of the bearing, so that there is a preload between the inner ring and the outer ring of the cross roller bearing and the rollers, so that the rotary table of the servo rotating platform supported by the bearings can bear various moments such as radial, axial and overturning, Its rigidity is more than 10 times that of traditional bearing.
High rotation accuracy
After the assembly of the servo rotating platform, the cross roller bearing of the platform is taken as the rotating center, and the outer diameter and end face of the rotary table are grinded again (the standard level is precision turning), so as to ensure the coaxiality and parallelism of the rotary table.
Any configuration of motor
The hollow rotating platform can flexibly change the size of the interface by customizing the flange and input shaft hole, which is suitable for connecting any brand of servo motor and stepping motor.