Design and function

The ELPEX coupling's transmission characteristic is determined essentially by the flexible rings. The flexible rings are manufactured from a natural rubber mixture with a multiply fabric lining. The flexible rings are split so that they can be changed without having to move the coupled machines.

The flexible rings are fastened to the hub with a clamping ring and to the outer flange with a clamping ring, using pins and bolts.

On the type EFG, the outer flange is designed with connection dimensions for connection to e.g. a diesel engine flywheel. On ENG types, the outer flange is fitted to a second hub part, which then enables the shaft-shaft connection.

Materials:

Flexible ring materials:

ELPEX coupling types

Types ENG/ENGS

Types EFG/EFGS

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

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 required e.g. in the case of marine drives.

Fail-safe device