EP couplings are used as flexible compensating couplings in all applications requiring a reliable transmission of torque under harsh operating conditions. The conical seats of the buffer pins facilitate mounting and guarantee maintenance-free operation. The optimized shape of the barrelled buffers allows simple plug-in assembly and low circumferential backlash. Many type variants are offered, e. g. with brake disk, axial play limiting device, or brake motor couplings.

Examples of application

EP couplings are used in general mechanical engineering both as high-speed couplings and for high torques, e. g.

Cement processing machines

Advantages of the product

Flexible fail-safe pin and bush coupling for medium up to high torques

Compact design; low weights and mass moments of inertia

Independent of direction of rotation (suitable for reversing operation)

Suitable for plug-in assembly (blind assembly, bell housing installation)

Torque range of the standard series between 200 Nm and 1,300,000 Nm

Features – Simple in construction – Power transmission through high tensile bolts – Highly stiff rubber Bushes are capable to bear the shock load – Rubber bushes remain unaffected from water, oil or dust & suit to temperature up to 80ºC – Suitable for high-speed drives – On periodic maintenance, only Bushes have to be replaced as spares Flexible elements are loaded in compression – Fail safe design, High torque ratings, Capacity to withstand high overloads Full Description Flexible couplings transmit torque from one shaft to another and are particularly useful in cases where a limited amount of misalignment of the shaft is unavoidable. Elflex flexible couplings are cushioned drive type couplings that transmit the torque through rubber bushes which have an excellent capacity to absorb shocks. A barrel shape of the bushes guarantees a uniform distribution of loads, even in case of misalignment, thus limiting the bending moment resulting from the radial force on the pins. Bushes are composed of a NBR element containing natural rubber.

Type of pin & bush coupling with brake disk
The flexible coupling is a fail-safe pin & bush coupling with brake disk.

Depending on the plant EP couplings are often provided with brake disks, rather infrequently with brake drum. The coupling is either used as a holding brake or as a service brake.

The position of the brake disk is intended on the driven side. With high-speed drives we recommend dynamic balancing from 30 m/s. Safety-relevant drives are preferably combined with steel hubs. Applications with lower demands can be combined with cast iron hubs.

Combinations with pin & bush coupling and brake:
Available in combination with KTR brakes type KTR-STOP (hydraulic) or EMB-STOP (electromechanical) on request. In addition the customer benefits from a supply from one single source so that there is the option to develop the brake (KTR STOP) as well.

Applications of our pin & bush coupling with brake disk EP:
Our pin & bush coupling with brake disk is used both as a holding brake and as a service brake, e. g. on conveyor belts, generators, turbine drives, industrial fans, cranes, hoists, etc.

Safety-relevant drives are preferably combined with EP KX steel hubs. Applications with lower demands can be combined with GJL hubs. “

Features

• Vertical/horizontal mounting
• Adsorbs vibrations
• Progressive torsion spring properties due to primarily pressurised bushings
• Fail-safe in the event of the failure of the bushings
• Easy replacement of bushings without disassembly of the coupling halves
• Maintenance free, no lubrication necessary
• Declaration of conformity in accordance with ATEX 2014/34/EU possible

Typical applications

• Pump drives
• Belt drives
• Ventilators
• General mechanical engineering