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  • CAD data and documentation for your configuration
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Your advantages

Safe operation
because this proven motor / gear unit combination in ATEX design offers maximum explosion protection.

Utilise variance
as the modular system for EDR... motors and ATEX helical gearboxes is particularly wide-ranging.

Realise high torque
because the R..EDR.. helical gearmotors deliver strong performance even when high torques are required.

Explosion-protected parallel shaft gearmotors F..EDR..

The safe gearmotor variant for potentially explosive atmospheres

The R..EDR.. helical gearmotors fully comply with the ATEX standard. In the II2GD and II3GD designs, they offer you an optimum balance of power rating and explosion protection.

Do not make any compromises, especially when selecting the motors. Our EDR... motors with ATEX certification are the decisive components when it comes to the safety of drives in potentially explosive atmospheres. With our wide range of motor sizes, we cover a power range from 0.12 kW to 45 kW and offer you a large dimension of flexibility in your selection.

In combination with the robust, explosion-protected helical gear units of the R series, torques from 50 Nm to 18,000 Nm can be realised for specific systems.

The modular system from SEW-EURODRIVE makes this broad spectrum possible. Our explosion-protected R..EDR.. helical gearmotors are available for categories 2 and 3 and can be used safely in gas zones 1 and 2 or in dust zones 21 and 22.

The explosion-protected R..EDR.. helical gearmotors also meet your high demands in terms of low weight and space-saving installation at all times.
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Directives and standards worldwide Adapters Extended Warranty Surface and corrosion protection Lubricants DUO diagnostic unit Brakes and brake control Encoder systems /DUE diagnostic unit option Oil seals Other additional features Find out more

Explosion-protected helical gearbox

RX series (single-stage)
  • Highly efficient helical gearbox in 6 sizes
  • High output speeds, up to 830 Nm
  • Gear unit ratios up to i = 8.65
    • available in foot or flange-mounted design

R series (two- and three-stage)
  • 15 sizes enable an optimum ratio between power rating and space requirement
  • finely stepped gear unit ratios up to i = 289.74; for double gear units up to i = 27 001
  • Available in foot or flange-mounted design
  • also available in reduced backlash design

RM series (two- and three-stage)
  • Explosion-protected helical gearboxes with extended output bearing hub
  • specially designed for agitating applications
  • 10 sizes
    • offer gear unit ratios up to i = 289.74
    • allow high transverse and axial forces as well as bending moments
 More about explosion-protected R series helical gearboxes

Explosion-protected AC motor

Series EDR..
  • 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 audited and certified by the PTB in accordance with the IECEx "Certified Equipment Scheme" with ExTr, QAR and CoC; more information on the certification system can be found on the PTB website.International Electrotechnical Commission.
    • Operation on frequency inverter, also in field weakening mode, for category 2 and 3 or EPL.b and .c
  • in accordance with HazLoc-NA® (NEC500/C22.1)
    • motors are certified in accordance with the Class Division System and are therefore tailored to 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 EDR series...

Gearmotor RX..EDR..
RX.. gear unit (single-stage) EDR.. motoring operation
Gearbox size mAmax Gear unit
Nm 		Size Power rating
kW
57 69 71S4 - 132M4 0.12 - 5.5
67 134 71S4 - 132M4 0.12 - 5.5
77 215 71S4 - 160M4 0.12 - 9.2
87 405 71S4 - 180L4 0.12 - 18.5
97 595 71S4 - 225M4 0.12 - 45
107 830 100M4 - 225M4 2.2 - 45

R..EDR.. gearmotor
R..-gear unit (two- and three-stage) EDR... motor
Gearbox size mAmax Gear unit
Nm 		Size Power rating
kW
07 50 71S4 - 71M4 0.12 - 0.37
17 85 71S4 - 80M4 0.12 - 0.75
27 130 71S4 - 100LC4 0.12 - 3
37 200 71S4 - 100LC4 0.12 - 3
47 300 71S4 - 132M4 0.12 - 5.5
57 450 71S4 - 132M4 0.12 - 5.5
67 600 71S4 - 132M4 0.12 - 5.5
77 820 71S4 - 160M4 0.12 - 9.2
87 1 550 71M4 - 180L4 0.37 - 18.5
97 3 000 71M4 - 225M4 0.37 - 45
107 4 300 100M4 - 225M4 2.2 - 45
127 6 000 100M4 - 225M4 2.2 - 45
137 8 000 132M4 - 225M4 5.5 - 45
147 13 000 160M4 - 225M4 9.2 - 45
167 18 000 160M4 - 225M4 9.2 - 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:
    • Rotary tables
    • Pumps and fans
    • Waste water and sewage treatment plants
    • fans
    • Roller conveyors
    • Belt conveyors
    • Chain conveyors
    • Corner transfer units