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Explosion Proof Belt Driven Modular Linear Actuators

The carriage is driven by an external linear belt that can be adjusted to reduce lash and is driven along the external roller bearings. The pulleys have maintenance-free ball bearings. Belt tension can be readjusted by a simple screw adjustment device in the carriage.


Safety is particularly important where people are working with flammable substances. The appropriate permits and certifications are therefore necessary for explosion-proof equipment. Our linear axes are certified in accordance with ATEX guidelines and thereby meet the high safety requirements for the explosion protection field.

Our linear axes that are specially developed for the explosion-protection field meet the highest safety standards in accordance with the following guidelines:

  • ATEX-R2014/34/EU
  • II 2G Ex h IIB T4 Gb
  • II 3D Ex h IIIB T125°C Dc
    • ISO 80079-36:2016
    • ISO 80079-37:2016
    • Technical Rules for Hazardous Substances (TRGS) 72

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External Belt Driven



This special lifting unit consists of an aluminum square profile with hardened steel guide rods. The carriages, which have internal linear ball bearings that can be adjusted free of play, are driven along the guide rods by a timing belt. The rotating timing belt pulleys have maintenance-free ball bearings. One rotation of the drive pulley complies with 1/2 linear circumference of the drive pulley. Belt tension can be readjusted by a simple tension device in one of the carriages. This device can also be used for symmetrical adjustment of two or more linear units running parallel.

  • Fitting position: As required. Max. length without joints 6,000 mm.
  • Carriage mounting: T-slots.
  • Unit mounting: T-slots or tapped holes in the bearing blocks, or mounting sets.
  • Belt type: HTD with steel reinforcement, no backlash when changing direction, repeatability ± 0.1 mm

ATEX 95 II 2G EEx c IIB T4:

All application areas except for underground mining. Gas atmosphere category 2, explosion protection category: protection due to secure construction (design security). Equipment group IIB. Temperature class T4=135°C

ATEX 95 II 3D T125°C:

All application areas except for underground mining. Dust atmosphere category 3. Maximum permissible surface temperature: 125°C.

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