© Siemens AG 2015 FLENDER Standard Couplings Highly Flexible Couplings — ELPEX Series General information ELPEX coupling types ENG Coupling as shaft-shaft connection EFG Coupling as flange-shaft connection ENGS as ENG with fail-safe device EFGS as EFG with fail-safe device Further application-specific coupling types are available. Dimension sheets for and information on these are available on request. The following versions have already been implemented a number of times:
• ELPEX coupling with brake drum, brake disk or flywheel mass • ELPEX coupling with axial backlash limiter • ELPEX coupling with adapter • ELPEX coupling in combination with a safety slip clutch • ELPEX coupling for engaging/disengaging during standstill • ELPEX coupling as part of a coupling combination ENG Fail-safe device of ELPEX coupling Types ENGS and EFGS are provided with a fail-safe device. In normal operation the torsion angle of the flexible rings is smaller than the gap between the cams. In normal operation there is no metal-metal contact. If the flexible rings fail, cams transmit the torque from the inner part and outer part.
These enable the coupling to be used in emergency mode for a short time. This option is frequently re- quired e.g. in the case of marine drives. G_MD10_XX_00038 ENGS Types ENG/ENGS A - A A A G_MD10_XX_00040 Types EFG/EFGS Fail-safe device 12 12/3 Siemens MD 10.1 · 2015 Type Description G_MD10_XX_00039 EFG EFGS