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Innovative hollow shaft rotary actuators available from Mclennan

12 December 2019

Recently announced by JVL A/S, its new HLMT series hollow shaft rotary actuators take a novel approach to decentralised precision positioning tasks on rotary tables and automated machines where a through aperture is required for routing services or maintaining a clear line of site.

Available in the UK from Mclennan, JVL’s distribution partner, the design features an offset motor mounting in five model variants with clear through-hole diameters from 20 to 30mm and rated torque output of 5 to 142Nm. The actuators are used with JVL’s MAC motor and ServoStep integrated servo and stepper motors or with other manufacturers motors in NEMA 17, 23 and 34 frame sizes.

The HLMT includes a comprehensive choice of options making installation straightforward and cost-effective. These include built-in absolute encoders for positioning accuracy to +/- 10 arc-sec and lost motion to 2 arc-min. Built-in home (datum) sensors are also available and standard or crossed-roller bearings options suit standard or heavy-duty axial and radial rigidity requirements (axial load to 800N on the largest model). Gear ratios available are 5, 10 or 18:1 with higher ratios on request.

With its inherent high torque, axial load capability, low run-out and platform parallelism the HLMT series is particularly suited to rotary table applications but will also suit machine set-ups where slip rings, electrical wiring, rotary fluid power joints or laser line-of-sight needs to be routed for moving to stationary platforms. The durable geared actuator meets the IP65 protection class, as does many of the JVL integrated motors

The product depth and flexibility of JVL’s range of integrated servo and stepper motor allows almost any choice of machine control interfacing with the added benefit of decentralised control for reduced installation and wiring. With no need for control cabinets, decentralised control can yield tangible cost and time savings. Control options cover individual or multi-axis stand-alone motion control with step and direction or analogue +/- 10 VDC inputs. JVL’s own ‘point & click’ graphical programming is also available across all its integrated motors. For MAC series integrated servomotors, the control options extend to a wide choice of Industrial Ethernet or other common protocols including CANopen, DeviceNet, Profibus, Profinet, EtherNet/IP, EtherCAT. POWERLINK and more. Wireless Bluetooth, WLAN and Zigbee systems are also available. The HLMT series may be purchased for use with third-party stepper and servomotors of choice, allowing the option to build through-hole rotary actuators with the customer’s preferred motor/motion controls supplier.


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