Linear actuators with polymer bearings and NEMA stepper motor

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Linear actuators with polymer bearings and NEMA stepper motorIgus UK is now supplying DryLin E actuators with polymer bearings and a NEMA stepper motor. The compact, light and quiet system is available ex-stock, individually configured to the required specification. Engineers benefit by spending less time on specifying, ordering and assembling components, and complete units can be reordered using a single part number.

Engineers have been using DryLin linear modules for many years, with around two-thirds of customers fitting their own choice of motors to drive the units. With the new DryLin E module from igus, the unit can be bought in as a complete item, ready to fit. By building up the unit using standard igus parts, the delivery lead time is extremely fast; a typical system can be delivered in 3 to 5 days. Previously igus has supplied motorised linear units, but these have been 'specials' built to order; the DryLin E module, on the other hand, is a standard catalogue product.

Matthew Aldridge of igus UK comments: "Until this point, the main focus of the igus linear drive product range has been on manual operation for format adjustments. Now, we have expanded our low-price, quick-delivery complete solutions by adding a NEMA motor to our ready-to-fit linear units. Stepper motors complement igus' DryLin linear drives perfectly due to their outstanding cost-effectiveness, precision and simple operation."

Stepper motor choices

Initially the igus motor range covers NEMA17 and NEMA23 stepper motors and is optionally available with encoder and/or brake. The motor units work reliably in a wide range of different environmental conditions (depending on the protection class chosen) and the NEMA standard guarantees global availability. As standard, the motors are sealed to IP65 and the shaft-to-module interface is protected to IP52.

Aldridge continues: "The company sets great store by the fact that the drive units for lubricant-free linear movements have been designed in such a way that they can also be driven by stepper motors made by other manufacturers. To achieve this, igus offers customers who already have a motor a 'quick-fit' aluminium spacer and motor flange connection to fit the NEMA motor."

Igus DryLin E SAW-0630 linear axis modules are suitable for simple lubricant-free format adjustments, feed movements and the handling of lightweight components. They are, via trapezoidal or high-helix thread lead screws, available in numerous pitches from 1.5mm to 15mm (design size 1040 up to 50mm).

Lead screw specifications

Lead screw nuts are made of iglidur high-performance polymers that are optimised for lubricant-free operation over the entire stroke length. Almost all of the components used for the ready-to-fit DryLin E actuators linear units are made of plastic and aluminium, which means they are extremely light.

The linear guide itself is based on the igus DryLin W system, which is virtually maintenance-free and has been in use successfully for many years. It comprises a bearing housing and tribologically optimised polymer gliding film for excellent friction and wear values.

Follow the link for more information about the DryLin E actuators or call igus UK directly on +44 (0)1604 677240. Currently the igus website has a user-friendly selector/configurator utility to help engineers specify the linear axis, with development soon to be complete on a further function for selecting motors. Meanwhile, contact igus directly for support with specifying motors.

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