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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Omschrijving Prijs 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-stocknr. 693-2499
Fabrikantnummer530.34.3232
FabrikantHuco
33,34 €
Each
Aantal stuks
10mm Bellows Coupling 34mm 40mm Set Screw 4.62Nm 1740Nm/rad 975 x 10^-8kg/m² 2.5° 0.1mm 0.6mm Stainless Steel - -
RS-stocknr. 745-0073
FabrikantnummerE69-C610B
FabrikantOmron
45,44 €
Each
Aantal stuks
6mm - 22mm 25.6mm - 0.8Nm 7Nm/rad - 0.5mm ±0.4mm - - -
RS-stocknr. 692-8103
Fabrikantnummer236.25
FabrikantHuco
9,93 €
1 Bag of 10
Bag(s)
- Oldham (Torque disc) - - - 4Nm 205Nm/rad - 0.5° 0.2mm 0.1mm - - -
RS-stocknr. 809-0786
Fabrikantnummer047.40.3838.RS
FabrikantHuco
19,05 €
Each
Aantal stuks
14mm Double Loop Elastomer - 56mm - 10Nm - - 15° - 11mm - - -
RS-stocknr. 489-3761
Fabrikantnummer13005523
FabrikantLenze
2,58 €
Each
Aantal stuks
- Straight Jaw Coupling - - - - - - 0.4mm 0.45mm - - -
RS-stocknr. 477-9889
FabrikantnummerPCMR25-10-8-A
FabrikantRuland
42,70 €
Each
Aantal stuks
- Beam Coupling 25.4mm 31.8mm - - - - 0.381mm 0.254mm - - -
RS-stocknr. 693-0786
Fabrikantnummer452H25.28
FabrikantHuco
7,25 €
Each
Aantal stuks
8mm Oldham (Sliding disc) 25.4mm - - - - - - - - - - -
RS-stocknr. 693-0806
Fabrikantnummer452H41.32
FabrikantHuco
11,50 €
Each
Aantal stuks
10mm Oldham (Sliding disc) 41.3mm - - - - - - - - - - -
RS-stocknr. 692-8115
Fabrikantnummer236.41
FabrikantHuco
11,65 €
1 Bag of 5
Bag(s)
- Oldham (Torque disc) - - - 17Nm 1200Nm/rad - 0.5° 0.25mm 0.15mm - - -
RS-stocknr. 693-0768
Fabrikantnummer452H19.20
FabrikantHuco
5,33 €
Each
Aantal stuks
5mm Oldham (Sliding disc) 19.1mm - - - - - - - - - - -
RS-stocknr. 423-1797
FabrikantnummerMJS19-5-A
FabrikantRuland
10,35 €
Each
Aantal stuks
5mm Curved Jaw Coupling 19.1mm 27.2mm Set Screw - - - - - - - - -
RS-stocknr. 410-6477
FabrikantnummerRS3520066
FabrikantHengstler
33,93 €
Each
Aantal stuks
6mm - 25mm 32mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -
RS-stocknr. 692-8137
Fabrikantnummer238.13
FabrikantHuco
6,74 €
1 Bag of 10
Bag(s)
- Oldham (Torque disc) - - - 0.5Nm 65Nm/rad - 0.5° 0.1mm 0.05mm - - -
RS-stocknr. 423-1775
FabrikantnummerMJC33-12-A
FabrikantRuland
17,34 €
Each
Aantal stuks
12mm Curved Jaw Coupling 33.3mm 44.5mm Clamp - - - - - - - - -
RS-stocknr. 423-1848
FabrikantnummerMJS25-10-A
FabrikantRuland
14,16 €
Each
Aantal stuks
10mm Curved Jaw Coupling 25.4mm 35.3mm Set Screw - - - - - - - - -
RS-stocknr. 748-257
Fabrikantnummer321.12.2424
FabrikantHuco
64,99 €
Each
Aantal stuks
1/4in Bellows Coupling 12mm 23mm Set Screw 79Ncm 27Nm/rad 18.5 x 10^-8kg/m² 14° +1.6 → -2.2mm 1.72mm Electrodeposited Nickel - -
RS-stocknr. 693-0774
Fabrikantnummer452H25.22
FabrikantHuco
7,25 €
Each
Aantal stuks
6mm Oldham (Sliding disc) 25.4mm - - - - - - - - - - -
RS-stocknr. 221-932
Fabrikantnummer466.33.3232
FabrikantHuco
56,30 €
Each
Aantal stuks
10mm Disc (Membrane) 33.5mm 40.1mm - - - 730 x 10^-8kg/m² - - - Aluminium - -
RS-stocknr. 325-8252
FabrikantnummerMWS25-10-10-SS
FabrikantRuland
44,96 €
Each
Aantal stuks
- Beam Coupling 25mm 24mm - 3.1Nm 1.75°/Nm - 0.38mm 0.25mm - - -
RS-stocknr. 296-9838
FabrikantnummerMCLX-10-10-F
FabrikantRuland
29,23 €
Each
Aantal stuks
10mm Rigid Coupling 29mm 45mm - - - - - - - - - -
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