Explosion-Proof Helical Gear Units

explosion_proof_helical_gear_unit_rx_r_rm_series_390x220

The explosion-proof helical gear units have equipment group II approval for categorie 2. They drive systems and machines in potentially explosive atmospheres.
A total of six single-stage and 14 two and three-stage sizes cover a performance range of 50 Nm to 18,000 Nm. This gear unit series is also far ahead in terms of gear unit ratios: from i = 1.30 to i = 289.74, in double gear units even i = 27,001. Torque ratings and gear unit ratios this finely stepped are hard to find on the market.
The R gear units also meet demands for high output speeds and light weight, of course. With a consistently high level of efficiency, explosion-proof helical gear units offer an optimum ratio between torque output and installation space.

RX / R / RM series explosion-proof helical gear units

  • Gear units comply with directive 94/9/EC (ATEX), or as of April 20, 2016 of the EU Directive 2014/34/EU (ATEX), equipment group II, categorie 2, variant II2GD
    • For use on the European market
    • Accepted in China
    • Accepted in Russia in combination with EAC certificates (formerly GOST-R)
  • Certified protection types:
    • Protection type “c”: Protected by safe construction (design safety), EN13463-1 and -5
    • Protection type “k”: Protected by liquid immersion, EN13463-1 and -8
  • All screws are secured against automatic loosening
  • Gear unit has a separate nameplate
  • High-quality oil seals
  • Lubricant can withstand high temperatures
  • Single or multi-stage
  • Foot- or flange-mounted
  • Foot- and flange-mounted
  • Flange-mounted with extended bearing hub

Features

  • Fourteen frame 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 or flange-mounted design
  • Also available with reduced backlash

Technical Data

Sizes 07 / 17 / 27 / 37 / 47 / 57 / 67 / 77 / 87 / 97 / 107 / 237 / 147 / 167

Gear unit ratio i 3.21 – 289.74
Gear unit ratio – double gear units i 90 – 27 001
Max. output torque Nm 50 – 18,000*
Motor power range (Mounting via AM motor adapter) kW 0.09 – 160

Areas of Application

  • Applications in potentially explosive atmospheres with air/gas or air/dust mixtures according to directive 94/9/EC (ATEX), or as of April 20, 2016 of the EU Directive 2014/34/EU (ATEX)
  • Applications with equipment categories II2GD
  • 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