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Copley Motion Systems is to launch the Servotube Hygienic, a high-performance direct-drive linear motor at SPS/IPC/Drives in Nuremberg.

The Servotube Hygienic is constructed from precision-machined austenitic stainless steel, with a smooth hygienic design that is free from dirt traps and suitable for use in demanding and corrosive industrial or aseptic environments.

There is no mechanical linkage between the fixed forcer body and the moving rod.

Therefore there is no wear and its integrated field-replaceable polymer bearings require no lubrication.

The position sensor is accurate and is protected from dirt or damage because it is built into the direct-drive linear motor’s body.

This elemental design meets DIN IP69K ingress protection requirements, allowing the linear motor to be used in dirty or wet environments and to be cleaned with pressurised jet-wash systems.

Direct-drive motion is also said to offer performance improvements compared with existing linear systems.

High peak force and low inertia guarantees highly dynamic movements and the Servotube Hygienic offers 25-micron repeatability throughout the lifetime of the linear motor.

The Servotube range of direct-drive linear motors require only a standard servo drive, and where applicable a linear rail to operate.

This reduces system complexity, maintenance and saves space because no servomotor or gearhead is required.

Electrically, the Servotube Hygienic operates from a three-phase 600V supply and provides a digital incremental encoder and commutation output for use with most standard digital servo drives.

The Servotube Hygienic will be initially available in two models that both offer +/- 400-micron position accuracy and 25-micron repeatability.

The XHB3804 and XHB3810 provide 744N and 1860N peak force capability and are capable of speeds of 4.7m/s and 2.6m/s respectively.

Both models can be water cooled providing up to 70 per cent extra continuous force for applications requiring high work rates or for use in environments with a high ambient temperature.

The Servotube Hygienic provides compact, high-throughput moving rod linear actuation with integrated field-replaceable polymer bearings to support the moving rod.

For off-axis loads an external bearing rail can be used.

This specialised linear direct-drive linear motor is said to be suitable for applications including food and pharmaceutical processing and packaging, industrial plants, chemical processing, and any environment where dirt, pressurised jet washing, and corrosive cleaning chemicals make standard linear actuation systems unsuitable.

Copley Motion Systems

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