RH-Series

C-axis Rotary Table - THE FAVORITE EXPANSION

RHA170

The RH series is an optional C-axis driven by a Harmonic Drive gear and is popularly used as a low-cost positioning unit as an installation or in CNC machine tools as a fourth axis. For example, it can be installed parallel to the X-axis, Y-axis or Z-axis of the machine tool to add a rotary axis to the machine. Siemens and Bosch-Rexroth are available as drives. The RH series can be used as a dividing head or for continuous movements, which also makes it popular for use in automation and expands the machining range.

Other RH series products and sizes

 RHA170 Highlights

  • High load capacity. Harmonicdrive transmission. Together with the number of teeth engaged at the same time, the load capacity is higher than other transmission methods. Smooth transmission, no vibrations.
  • The Harmonicdrive reduction gear consists of a shaft generator, a shaft gear and a spur gear, where the shaft gear is a flexible, thin-walled, elastic part with an outer ring gear that continuously deforms during ring transmission. This eliminates backlash when interacting with the spur gear and achieves high precision and low transmission backlash.
  • Large gear ratio. The single stage reduction ratio can reach 80-100, so you can get a large output torque.
  • Pre-installed brakes with optional powerful brakes for heavy duty machining.
  • Smooth transmission, low effort, no noise.

Harmonicdrive

The internal drive is a simulated engagement of multiple teeth in a symmetrical position of 180 degrees, so that the gear pitch error and the cumulative tooth pitch error have a more uniform effect on the drive accuracy and a very high positioning accuracy can be achieved.

Size

Small sizes and low weight compared to conventional gearboxes. The significant reduction in sizes and weight allows for a very small design. As a result, the Harmonic axis saves space on the machine and reduces the load on the table.

Gear ratio

The single-stage gear ratio can reach 80-100, so you can achieve a large output torque.

Specification

Model
Working disc diameter
Reference aperture of working disc Center height
Deceleration ratio
mm
mm
mm
RHA170
170
30
/
1 :  100
RHB145
170
40
/
1 : 101
Continuous holding torque Vertical kg 25 40
Vertical+Tail type kg / /
Horizontal kg / /
Allowable load Allowable axial load N / /
Brake torque N-m 153 140
Continuous holding torque N-m 436 178

Dimensional drawings

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