R..EDR.. Helical Gearmotors

SEW Eurodrive


Explosion Proof Gearmotors


-Contact Us For Discount Pricing-

Explosion-proof helical gear unit


RX series (single-stage)


  • Highly efficient helical gear units in 6 sizes
  • High output speeds up to 830 Nm
  • Gear unit ratios up to i = 8.65
    • Available in foot-mounted or flange-mounted design


R series (two-stage and three-stage)


  • Fifteen different sizes allow for an optimum ratio between performance and space requirements
  • Finely stepped gear unit ratios up to i = 289.74, or i = 27 001 for double gear units
  • Available in foot-mounted or flange-mounted design
  • Also available with reduced backlash


RM series (two-stage and three-stage)


  • Explosion-proof helical gear units with extended output bearing hub
  • Specifically designed for agitating applications
  • 10 sizes
    • Offer gear unit ratios up to i = 289.74
    • Allow high overhung and axial loads as well as bending moments


Explosion-proof AC motors


EDR.. series


  • Compliant with EC Directive 94/9/EC (ATEX), or as of April 20, 2016 of the EU Directive 2014/34/EU (ATEX) and IECEx
    • Can be used in categories 2G, 2GD and 3GD, 3D for zones 1 / 21 and 2 / 22
    • Also available as brakemotor in category 3
    • Conform to the efficiency class IE2
    • In accordance with IECEx to EPL Gb and Db as well as Gc and Dc
    • In accordance with the IECEx Certified Equipment Scheme, EDRS and EDRE motor types are audited and certified by PTB by means of ExTr, QAR, and CoC. For more information on the certification system, see the website of the International Electrotechnical Commission.
    • Operation on a frequency inverter, also in field-weakening operation, for categories 2 and 3 and/or EPL .b and .c
  • According to HazLoc-NA® (NEC500/C22.1)
    • Motors are certified according to the Class Division System and therefore meet the explosion protection requirements for the North American market
    • Available as CID2 type, for Division 2 Class I for gas groups A, B, C and D
    • Available as CIID2 type, 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 brakemotor
    • Operation with frequency inverter possible

Explosion-proof helical gearmotors


The explosion-proof helical gearmotors are also always a safe option for you. Choose the right combination for your plant from 10 motors and 21 helical gear unit sizes – ATEX compliant as always!


The safe gearmotor variant for potentially explosive atmospheres


R..EDR.. helical gearmotors fully comply with the ATEX standard. In II2GD and II3GD versions, they offer the ideal combination of performance and explosion protection.


Particularly when selecting motors, you should not have to make compromises. The ATEX-certified EDR.. motors are critical components when it comes to drive safety in potentially explosive areas. A number of motor sizes cover a power range from 0.12  kW to 45 kW and offer a large degree of flexibility in terms of selection.


Plant-specific torques ranging from 50 Nm to 18,000 Nm can be flexibly realized in combination with the robust, explosion-proof helical gear units from the R series.


This broad spectrum is made possible by the SEW-EURODRIVE modular concept. These explosion-proof R..EDR.. helical gearmotors are available for categories 2 and 3. They can also be safely used in gas zones 1 and 2 and/or in dust zones 21 and 22.


The explosion-proof R..EDR.. helical gearmotors also always meet high demands in terms of low weight and space-saving installation.

Please feel free to contact us – We are ready to help with any application. Call us at (208) 322-2425