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Linear positioning drives in Nema 8 and Nema 14

Nanotec (Germany) has introduced hybrid linear positioning drives. They are controllable by CANopen connectable motion control units.

THE LAUNCHED MODELS IN NEMA 8 (20 mm flange size) and Nema 14 (35 mm flange size) format include a rotating screw mounted on the stepper motor. The linear movement is generated with the aid of an external nut. These motors are suitable for the design of compact linear axes as there is no need for the coupling and the bearing support point for the screw. The linear positioning drives are used, for example, for scanning tasks in optical, mechanical or acoustic test equipment.
The products use maintenance-free thermo-plastic nuts. Despite its small size, the Nema-8 model LS2018 delivers a force of 40 N and a step resolution of 0,005 mm. The Nema-14 model LS3518 delivers a force of 140 N and a resolution of 0,01 mm. Screw lengths of 75 mm or 150 mm are available; customer-specific screw lengths can be optionally obtained.
Both actuators can also be supplied with high-resolution (2000 increments per revolution) encoders. The company offers motion control units for these linear drives, which provides CAN connectivity. Besides its proprietary protocol, the controllers also support the CiA 301 and CiA 402 specifications.

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