Couplings

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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Description Prix 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
N° de stock RS 810-0694
MarqueRS PRO
10,88 €
Each
Unité
8 → 19mm Gear coupling 32mm - - 16Nm - - 1mm - - - -
N° de stock RS 810-0726
MarqueRS PRO
7,92 €
Each
Unité
- Gear coupling 66mm 46mm - - - - - 1mm - - - -
N° de stock RS 810-0729
MarqueRS PRO
11,58 €
Each
Unité
- Gear coupling 76mm 48mm - - - - - 1mm - - - -
N° de stock RS 810-0690
MarqueRS PRO
9,17 €
Each
Unité
6 → 14mm Gear coupling 25mm - - 10Nm - - 1mm - - - -
N° de stock RS 810-0707
MarqueRS PRO
19,85 €
Each
Unité
10 → 28mm Gear coupling 44mm - - 45Nm - - 1mm - - - -
N° de stock RS 183-782
MarqueRS PRO
4,11 €
Each
Unité
31mm HRC Coupling - 29mm - - - - - - - - - -
N° de stock RS 810-0717
MarqueRS PRO
5,90 €
Each
Unité
- Gear coupling 52mm 41mm - - - - - 1mm - - - -
N° de stock RS 810-0710
MarqueRS PRO
3,75 €
Each
Unité
- Gear coupling 40mm 37mm - - - - - 1mm - - - -
N° de stock RS 810-0713
MarqueRS PRO
5,17 €
Each
Unité
- Gear coupling 48mm 37mm - - - - - 1mm - - - -
N° de stock RS 183-811
MarqueRS PRO
13,39 €
Each
Unité
50mm HRC Coupling - 38mm - - - - - - - - - -
N° de stock RS 183-186
MarqueRS PRO
11,27 €
Each
Unité
25mm HRC Coupling - 29mm - - - - - - - - - -
N° de stock RS 184-763
MarqueRS PRO
25,83 €
Each
Unité
42mm HRC Coupling - 38mm - - - - - - - - - -
N° de stock RS 810-0704
MarqueRS PRO
14,54 €
Each
Unité
10 → 24mm Gear coupling 36mm - - 20Nm - - 1mm - - - -
N° de stock RS 183-192
MarqueRS PRO
16,78 €
Each
Unité
28mm HRC Coupling - 29mm - - - - - - - - - -
N° de stock RS 184-785
MarqueRS PRO
11,27 €
Each
Unité
25mm HRC Coupling - 29mm - - - - - - - - - -
N° de stock RS 183-805
MarqueRS PRO
10,89 €
Each
Unité
45mm HRC Coupling - 38mm - - - - - - - - - -
N° de stock RS 184-735
MarqueRS PRO
17,72 €
Each
Unité
28mm HRC Coupling - 29mm - - - - - - - - - -
N° de stock RS 183-798
MarqueRS PRO
6,53 €
Each
Unité
32mm HRC Coupling - 29mm - - - - - - - - - -
N° de stock RS 184-684
MarqueRS PRO
25,83 €
Each
Unité
42mm HRC Coupling - 38mm - - - - - - - - - -
N° de stock RS 183-209
MarqueRS PRO
20,17 €
Each
Unité
42mm HRC Coupling - 38mm - - - - - - - - - -