PRÄZISIONSKUPPLUNGEN

FOR USE IN HAZARDOUS AREAS

Marking example

Based on the ATEX markings the product can be certified for suitability under certain conditions.

ATEX Bellows Couplings

  • CONSTRUCTION
    Dimensions and materials of the standard models remain largely intact.
  • PERFORMANCE RATINGS
    All permitted misalignment, speed, and torque ratings of the standard models must be reduced by 30%.
  • OPERATION
    ATEX metal bellows couplings must only be operated inside a sealed housing. Both the input and output shafts must be monitored to guarantee shut down in the case of coupling failure.
    With blind mate style bellows couplings it is also neces- sary to guarantee electrical continuity between both shafts. This is necessary due to the electrically isolating properties of the coupling, and the need to prevent sparking from any electrostatic charges.

ATEX Elastomer Couplings

  • CONSTRUCTION
    Dimensions and materials of the standard models remain largely intact. For ATEX elastomer couplings the inserts come in version "D" (Sh65D) which is electrically conductive to provide continuity for any potential electrostatic charges.
  • PERFORMANCE RATINGS
    All permitted misalignment, speed, and torque ratings of the standard models must be reduced by 30%.
  • OPERATION
    In the case of model TX thermoplastic hub elastomer cou- plings it is also necessary to guarantee electrical continuity between both shafts. This is necessary due to the electri- cally isolating properties of the coupling, and the need to prevent sparking from any electrostatic charges.

ATEX Safety Couplings

  • CONSTRUCTION
    Dimensions and materials of the standard models remain largely intact.
    Generally full disengagement style safety couplings are used in ATEX environments in order to avoid high tempera- tures from excess friction after disengagement.
    For ES2 safety couplings the inserts come in version "D" (Sh65D) which is electrically conductive to provide continu- ity for any potential electrostatic charges.
  • PERFORMANCE RATINGS
    All permitted misalignment and speed ratings of the stand- ard models must be reduced by 30%.
  • OPERATION
    ATEX safety couplings must be used with an ATEX prox- imity switch. The emergency stop function in conjunction with activation of the switch must be fully tested for proper function prior to commissioning of the machine.
    When bellows couplings are incorporated they must only be operated inside a sealed housing. Both the input and output shafts must be monitored to guarantee shut down in the case of bellows failure.
    With blind mate style bellows couplings it is also neces- sary to guarantee electrical continuity between both shafts. This is necessary due to the electrically isolating properties of the coupling, and the need to prevent sparking from any electrostatic charges.

ATEX Line Shafts

  • CONSTRUCTION
    Dimensions and materials of the standard models remain largely intact.
    For EZ type line shafts the inserts come in version "D" (Sh65D) which is electrically conductive to provide conti- nuity for any potential electrostatic charges.
  • PERFORMANCE RATINGS
    All permitted misalignment, speed, and torque ratings of the standard models must be reduced by 30%.
    The allowable operating speed depends on the overall length of the line shaft and is available upon request.
  • OPERATION
    When bellows couplings are incorporated they must only be operated inside a sealed housing. Both the input and output shafts must be monitored to guarantee shut down in the case of bellows failure.

ATEX Disc Pack Couplings

  • CONSTRUCTION
    Dimensions and materials of the standard models remain largely intact.
  • PERFORMANCE RATINGS
    All permitted misalignment, speed, and torque ratings of the standard models must be reduced by 30%.
  • OPERATION
    Both the input and output shafts must be monitored to guarantee shut down in the case of disc pack failure.

 

Prior to deviating from any of the previous safety instructions please contact R+W.

The use of devices and components in explosive areas is governed by the European directives 94/9/EC (for manu- facturers) and 1992/92/EC (for operators). The presented products are non-electrical equipment of category 2. All necessary documents and certifications are stored in a known location. The conformity of these products with these guidelines is established and may be declared by the manufacturer.

According to Directive 94/9/EC, delivery of an ATEX cou- pling requires the inclusion of special installation and op- erating instructions along with the EC declaration of con- formity issued by the manufacturer. All necessary values for installation, operation and removal are included.

All statements made about ATEX conforming products are based on our present knowledge and experience. R+W re- serves the right to change technical specifications.