New compact all-in-one linear actuators available from Mclennan

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New compact all-in-one linear actuators available from MclennanNew from AMP and available from Mclennan, NEMA size 11 StepServo integrated motors are now available as compact all-in-one linear actuators fitted with precision ball screw or lead screw output shafts and anti-backlash nuts. As a convenient and cost-effective drop-in option, the new TBSM11 linear actuator includes the positioning mechanics, servo drive, motor, feedback and motion control elements that are required for a variety of high-precision linear positioning and force/tensioning tasks.

AMP's StepServo extends closed-loop servo performance to traditional stepper motor-based motion systems with 'integrated motor' packages that include microstepping motors with built-in drives, encoder feedback, motion controllers and optional fieldbus communications. Highly developed servo control algorithms provide up to 50 per cent more torque than normal steppers with significant benefits including higher precision control, higher acceleration, faster machine cycles and greater productivity as well improved energy efficiency and quieter operation.

For the current TBSM11 series AMP has used its miniature NEMA size 11 motor that has a nominal torque around 8Ncm to provide around 100N of usable force for the actuator (based on a 5mm pitch ball screw). With screw pitches from 1mm to 5mm/rev and repeatability to +/-0.02mm, users can choose ball screw or lead screw options with diameters up to 6mm.

Mclennan's sales and engineering team can specify the optimal screw and mating nut option with stroke length, end machining and nut preloading designs. From a mechanical installation perspective, the TBSM11 reduces design effort, saves space and removes the need for couplings – while directly offering a typical closed-loop positioning resolution to 0.005mm per motor step. The use of an integrated motor also means less wiring and an easier and altogether more compact installation.

The TBSM features on-board motion control with AMP's Q Programming software that enables operation as a standalone axis with motion profiles stored in non-volatile memory. Software-supported set-up, configuration, programming and firmware management is via an RS-485 communication port that also enables network connections for multiple axes.

The comprehensive StepServo range is available in a wide selection of motor powers and sizes from NEMA 11 through to NEMA 34 frame motors. Motion control options include pulse or analogue control as well as a choice of built-in Modbus/RTU or CANopen multi-axis networking. Pre-programmed standalone operation using AMP's 'Q' motion software and Ethernet-based fieldbus including EtherCAT is also available.

Mclennan supports the complete range of StepServo, DC servo intelligent drives, separate stepper and servo drives, motors and other motion components from AMP which offer similar levels of control where all may be mixed for complete and competitively priced multi-axis motion and machine control system products. Go to for more information.

04 April 2018

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