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. 423-1703
FabrikantnummerMJC19-8-A
FabrikantRuland
€ 11,92
Each
Aantal stuks
8mm Curved Jaw Coupling 19.1mm 27.2mm Clamp - - - - - - - - -
RS-stocknr. 748-207
Fabrikantnummer321.07.1414
FabrikantHuco
€ 70,57
Each
Aantal stuks
3mm Bellows Coupling 6.35mm 14mm Set Screw 41Ncm 7Nm/rad 1.3 x 10^-8kg/m² 11° 1mm 0.65mm Electrodeposited Nickel - -
RS-stocknr. 814-540
FabrikantnummerPSMR10-3-3-A
FabrikantRuland
€ 25,96
Each
Aantal stuks
- Beam Coupling 9.5mm 14.3mm - 0.62Nm 11.83°/Nm - 0.203mm 0.127mm - - -
RS-stocknr. 750-6732
FabrikantnummerE69-C06B
FabrikantOmron
€ 22,38
Each
Aantal stuks
6mm - 15mm 22mm - 0.8Nm 7Nm/rad - 0.5mm ±0.4mm - - -
RS-stocknr. 477-9766
FabrikantnummerFCMR19-5-5-A
FabrikantRuland
€ 38,01
Each
Aantal stuks
- Beam Coupling 19.05mm 31.75mm - 2.94Nm 1.331°/Nm - 0.203mm 0.127mm - - -
RS-stocknr. 423-1804
FabrikantnummerMJS19-6-A
FabrikantRuland
€ 10,96
Each
Aantal stuks
6mm Curved Jaw Coupling 19.1mm 27.2mm Set Screw - - - - - - - - -
RS-stocknr. 808-7266
FabrikantnummerROTEX14-Complete-KTR
FabrikantKTR
€ 24,82
Each
Aantal stuks
6 → 16mm Curved Jaw Coupling 30mm 35mm - - - - 1.2° 0.17mm -0.5 mm, +1.0 mm - - -
RS-stocknr. 423-1905
FabrikantnummerJD12/19-98R
FabrikantRuland
€ 4,50
Each (In a Pack of 2)
Aantal stuks
- Curved Jaw Coupling 19.1mm - - - - - 0.8° 0.08mm 0.51mm - 98Shore A 19 mm Hubs
RS-stocknr. 492-9270
FabrikantnummerKUP-1010-B
FabrikantSick
€ 31,70
Each
Aantal stuks
10mm - 21mm 29mm - - 120Nm/rad - 0.3mm 0.4mm - - -
RS-stocknr. 701-9143
FabrikantnummerJD12/19-85B
FabrikantRuland
€ 8,17
Each (In a Pack of 2)
Aantal stuks
- Curved Jaw Coupling 19.1mm - - - - - 0.13mm 0.51mm - - -
RS-stocknr. 296-9800
FabrikantnummerMCLX-6-6-F
FabrikantRuland
€ 22,75
Each
Aantal stuks
6mm Rigid Coupling 18mm 30mm - - - - - - - - - -
RS-stocknr. 423-1898
FabrikantnummerJD12/19-92Y
FabrikantRuland
€ 4,235
Each (In a Pack of 2)
Aantal stuks
- Curved Jaw Coupling 19.1mm - - - - - 0.9° 0.1mm 0.51mm - 92Shore A 19 mm Hubs
RS-stocknr. 814-635
FabrikantnummerPSMR25-10-10-A
FabrikantRuland
€ 30,15
Each
Aantal stuks
- Beam Coupling 25.4mm 31.8mm - - 1.8°/Nm - 0.381mm 0.254mm - - -
RS-stocknr. 423-1781
FabrikantnummerMJS19-4-A
FabrikantRuland
€ 10,35
Each
Aantal stuks
4mm Curved Jaw Coupling 19.1mm 27.2mm Set Screw - - - - - - - - -
RS-stocknr. 607-6750
FabrikantnummerKUP-0610-B
FabrikantSick
€ 31,70
Each
Aantal stuks
6mm - 21mm 29mm - - 120Nm/rad - 0.3mm 0.4mm - - -
RS-stocknr. 423-1680
FabrikantnummerMJC19-5-A
FabrikantRuland
€ 11,74
Each
Aantal stuks
5mm Curved Jaw Coupling 19.1mm 27.2mm Clamp - - - - - - - - -
RS-stocknr. 325-8173
FabrikantnummerMWS15-3-3-SS
FabrikantRuland
€ 37,46
Each
Aantal stuks
- Beam Coupling 15mm 20mm - 0.85Nm 4.44°/Nm - 0.2mm 0.12mm - - -
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. 410-6499
FabrikantnummerRS3520065
FabrikantHengstler
€ 38,35
Each
Aantal stuks
10mm - 25mm 32mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -
RS-stocknr. 410-6506
FabrikantnummerRS3520033
FabrikantHengstler
€ 11,50
Each
Aantal stuks
5mm - 25mm 32mm - 80Ncm - - ±4° ±0.25mm ±0.4mm - - -
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