Couplings are used to join two shafts together for the purpose of transmitting power.

Couplings can be either material flexing or mechanical flexing.

Typical uses for couplings are motor to pump, motor to gear box and motor to electric actuator.

Factors to consider unless you are replacing a like for like coupling are:

  • Horsepower of the motor

  • RPM

  • BSE (the distance between shaft ends

  • Operating temperature

  • Space available

  • Run cycle

  • Angular, parallel or axial misalignment handling

There are many different types of couplings available and many factors should be considered before deciding on a specific type.

Some of the types of couplings available:

General purpose, backlash free, flexible beam couplings feature multiple helical cuts and are machined from one piece material. They have 0.4 to 12 Nm nominal torque range and reduces wind-up compared to single beam coupling. Flexible beam couplings are used in a variety of motion-control applications, from aviation and lab equipment to robotics and medical devices. A common industrial application arises when a motor is connected to a pump. Factory automation equipment and other machine tools rely on flexible beam couplings to transmit power from a motor source.

Bellows couplings are made of a thin-walled, flexible metal corrugation (bellows) that is connected between two clamping hubs. They are designed to create a low inertia zero-backlash coupling which will last a long time without maintenance. Bellows couplings can accommodate all forms of misalignment and have a balanced design for reduced vibration at high speeds. They’re best suited for applications where precise positioning is required, such as in material handling or general automation and assembly.

Jaw couplings are used within electrical motor and internal combustion systems to transmit power (torque). They are designed to connect two shafts, enabling smooth torque transmission and reducing loss of power. Jaw couplings work by preventing shock loading (the sudden and drastic increase of load in a system) and/or accommodating shaft misalignment where this has been caused by thermal expansion or manufacturing inefficiencies.

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Beskrivning Pris Bore Coupling Types Outside Diameter Length Fastening Type Torque Rating Torsional Stiffness Moment of Inertia Misalignment - Angular Misalignment - Parallel Misalignment - Axial Bellows Material Shore Hardness Suitable For Use With
RS-artikelnummer 410-6499
Tillv. art.nrRS3520065
384,03 kr
10mm - 25mm 32mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -
RS-artikelnummer 410-6512
Tillv. art.nrRS1761026
113,85 kr
- - 15mm 20mm - 70Ncm 12Nm/rad - ±2.5° ±0.3mm ±0.2mm - - -
RS-artikelnummer 410-6506
Tillv. art.nrRS3520033
114,26 kr
5mm - 25mm 32mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -
RS-artikelnummer 410-6455
Tillv. art.nrRS3520035
331,60 kr
5mm - 19.2mm 28mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -
RS-artikelnummer 410-6477
Tillv. art.nrRS3520066
350,84 kr
6mm - 25mm 32mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -
RS-artikelnummer 410-6348
Tillv. art.nrRS0070653
468,71 kr
- - 19.2mm 28mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -