Component

Rotary Swivel Unit DSH-M

The isel DSH-M Rotary Swivel Unit is a compact, high-precision rotary axis designed to add 4th and 5th axis capability to CNC machines. Built around advanced Harmonic Drive technology, it delivers exceptional positioning accuracy, high torsional rigidity and zero backlash for demanding machining applications. With maintenance-free operation, IP65 protection and a choice of reduction ratios, the DSH-M is an ideal solution for precision multi-axis machining.

Highlights & Features

Features

Ideal for retrofitting CNC machines with a 4th and 5th axis
High-precision Harmonic Drive gearbox
Zero backlash with high torsional rigidity
High load capacity and rigid output bearing
Powerful EC60 TM 200 W / 48 V servo motor
Reduction ratios of 1:51 or 1:101
Transmission accuracy below 1.5 arcmin
Repeatability below ±6 arcsec
IP65 protection against dust and water
Maintenance-free operation

Highlights

The DSH-M Rotary Swivel Unit delivers outstanding precision and rigidity for advanced CNC machining. Its Harmonic Drive gearbox, zero-backlash transmission and exceptional repeatability make it ideal for demanding 4th and 5th axis applications where accuracy, reliability and long-term performance are essential.

Equipment, Options & Controls

Options

NEMA 23 compatible (stepper motor MS 200)
Choice of stepper or servo motor drives
Various limit and reference switch configurations
Customisable swivel range

Applications & Workpieces

Applications

Suitable for CNC machining centres, multi-axis milling, automation systems, precision engineering and industrial applications requiring accurate rotary positioning and 4th or 5th axis capability.

Technical Specifications

Technical Data

Performance

Reduction ratios: 1:51 or 1:101
Rated output speed: up to 20 rpm
Maximum output speed: up to 78 rpm
Rated torque: up to 38 Nm
Maximum short-term torque: up to 80 Nm
Nominal holding torque: up to 108 Nm
Maximum gearbox load capacity: up to 157 Nm

Accuracy

Transmission accuracy: <1.5 arcmin
Repeatability: <±6 arcsec

Construction

High-precision Harmonic Drive gearbox
Rigid output bearing
Zero backlash design
Protection class: IP65
Weight: Approx. 25 kg