• Detailed information on your customised product
  • CAD data and documentation for your configuration
 Configure product now
Your advantages

Integrate safety
because these gearmotors fulfil equipment categories II2GD and II3GD with ATEX certification.

Realise running smoothness
because the S...EDR worm gearmotors are designed to run particularly quietly and smoothly.

Compact installation
is easy to implement thanks to the right-angle gear unit design and the small installation space requirement.

Explosion-protected helical-bevel gearmotors K..EDR.. Explosion-protected SPIROPLAN® right-angle gearmotors W..EDR..

Explosion-protected worm gearmotors for potentially explosive atmospheres

Are you looking for a reliable, low-maintenance and explosion-protected drive solution? Then our worm gearmotors from the two-stage S..EDR... series are a very good choice.

The combination of a reliable motor and robust worm gearbox offers you ATEX-compliant protection in the medium torque range. Thanks to their special design features, these gearmotors are particularly running smoothness and low noise. Thanks to the two-stage design, the explosion-protected S..EDR.. worm gearmotors have a comparatively high efficiency.

You can also benefit from the special cost-effectiveness of this drive. Thanks to their simple yet robust design, you save measurable costs, can reduce the installation space and have an optimised explosion-protected drive solution.

Our S..EDR.. worm gearmotors are available with motor outputs from 0.12 kW to 45 kW. Depending on the selected gearbox configuration, output torques ranging from 92 Nm to 4,000 Nm are available. Take advantage of all the possibilities offered by the optional equipment as a flange or foot gearmotor - either as a solid or hollow shaft design.
Contact form Worldwide locations Locations in the UK

By activating the postcode search, data is transferred to the USA by Google. For more information, see our privacy policy.

Directives and standards worldwide TorqLOC® hollow shaft mounting system Adapters Long-term warranty Surface and corrosion protection Lubricants DUO diagnostic unit Brakes BE.. Encoders Diagnostics units option /DUE Oil seals Other additional features Find out more

Explosion-protected worm gear unit

S series: two-stage
  • Gear unit complies with Directive 94/9/EC (ATEX) or, from 20 April 2016, EU Directive 2014/34/EU (ATEX), equipment group II, equipment category 2, design II2GD
    • for use in the European market
    • accepted in China
    • Accepted in Russia in connection with EAC certificates (successor to GOST-R)
  • certified protection types:
    • Protection type "c": Protection by safe design (constructive safety) EN13463-1 and -5
    • Protection type "k": Protection by liquid encapsulation EN13463-1 and -8
  • Standard-compliant impact-resistant bonnets as shrink disc covers on the gear unit
  • All screws are additionally secured against automatic loosening
  • gear unit has a separate nameplate
  • High-quality oil seals
  • High temperature resistance of the lubricant
  • Significantly better efficiency than pure worm gearboxes due to helical gear/worm combinations
  • particularly quiet rotor
  • possible designs:
    • Foot or flange-mounted design
    • B5 or B14 flange-mounted design
    • Full wave or hollow shaft
    • Hollow shaft with keyway connection, shrink disc, splined hollow shaft or TorqLOC®
 More about explosion-protected worm gearboxes S series

Explosion-protected AC motor

EDR.. series
  • Compliant with Directive 94/9/EC (ATEX), or from 20 April 2016 EU Directive 2014/34/EU (ATEX) and IECEx
    • Can be used in category 2G, 2GD and 3GD, 3D for zones 1 / 21 and 2 / 22
    • also available as a brakemotor in category 3
    • fulfil efficiency class IE2
    • in accordance with IECEx according to EPL Gb and Db as well as Gc and Dc
    • Motor types EDRS and EDRE motors audited and certified by the PTB in accordance with IECEx "Certified Equipment Scheme" with ExTr, QAR and CoC; more information on the certification system on the International Electrotechnical Commission website.
    • Operation on frequency converters, also in field weakening mode, for category 2 and 3 or EPL .b and .c
  • according to HazLoc-NA®.® (NEC500/C22.1)
    • motors are certified according to the Class Division System and are therefore designed to meet the explosion protection requirements of the North American market
    • available as type CID2, for Division 2 Class I for gas groups A, B, C and D
    • available as type CIID2, Division 2 Class II for dust groups F and G
    • available as type /CICIID2, for Division 2 Class I for gas groups A, B, C and D and Class II for dust groups F and G
    • Also available as a brakemotor
    • Operation with frequency inverter possible
 More about explosion-protected AC motors series EDR...

Gearmotor S..EDR..
S.. gear unit (two-stage) EDR... motoring operation
Gearbox size mAmax Gear unit
Nm 		Size Power rating
kW
37 92
71S4 - 90L4
0.12 - 1.5
47 170
71S4 - 100LC4
0.12 - 3
57 295
71S4 - 100LC4
0.12 - 3
67 520
71S4 - 132M4
0.12 - 5.5
77 1 270
71S4 - 160M4
0.12 - 9.2
87 2 280
71M4 -180L4
0.55 - 18.5
97 4 000
71M4 - 225M4
0.55 - 45
  • Potentially explosive users with air-gas or air-dust mixtures in accordance with Directive 94/9/EC (ATEX) or, from 20 April 2016, EU Directive 2014/34/EU (ATEX)
  • Applications with equipment category II2GD and II3GD
  • Use with air mixtures
    • with gases (G): in zones 1 and 2
    • with dusts (D): in zones 21 and 22

Examples:

  • Adjustment drives
  • presses
  • Rotary tables
  • Corner transfer units