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.


...
Read more Read less

Filters

Viewing 1 - 20 of 842 products
Results per page
Description Price Bore Coupling Types Outside Diameter Length Fastening Type Torque Rating Torsional Stiffness Misalignment - Angular Misalignment - Parallel Misalignment - Axial Bellows Material
RS Stock No. 477-9895
Mfr. Part No.PCMR25-8-6-A
BrandRuland
€35.87
Each
units
- Beam Coupling 25.4mm 31.8mm - 3.73Nm - 0.381mm 0.254mm -
RS Stock No. 692-8103
Mfr. Part No.236.25
BrandHuco
€20.04
1 Bag of 10
Bag(s)
- Oldham Coupling - - - 4Nm - 0.5° 0.2mm 0.1mm -
RS Stock No. 423-1719
Mfr. Part No.MJC25-6-A
BrandRuland
€18.48
Each
units
6mm Jaw Coupling 25.4mm 11.9mm - - - - - - -
RS Stock No. 477-9851
Mfr. Part No.FCMR38-16-16-A
BrandRuland
€88.00
Each
units
- Beam Coupling 38.1mm 57.15mm - 10.73Nm - 0.762mm 0.381mm -
RS Stock No. 808-7266
Mfr. Part No.ROTEX14-Complete-KTR
BrandKTR
€23.27
Each
units
6 → 16mm Jaw Coupling 30mm 35mm - - - 1.2° 0.17mm -0.5 mm, +1.0mm -
RS Stock No. 809-0777
Mfr. Part No.047.40.3232.RS
BrandHuco
€21.45
Each
units
10mm Specialist Coupling - 56mm - 10Nm - 15° - 11mm -
RS Stock No. 423-1747
Mfr. Part No.MJC25-10-A
BrandRuland
€16.82
Each
units
10mm Jaw Coupling 25.4mm 11.9mm - - - - - - -
RS Stock No. 808-7364
Mfr. Part No.ROTEX42PB-ALIHUB-KTR
BrandKTR
€71.96
Each
units
42 → 55mm Jaw Coupling 95mm 73mm - - - 0.9° 0.23mm -1.00 mm, +2.00mm -
RS Stock No. 809-0727
Mfr. Part No.047.10.2222.RS
BrandHuco
€14.65
Each
units
6mm Specialist Coupling - 27mm - 0.5Nm - 10° - 4.5mm -
RS Stock No. 810-0694
BrandRS PRO
€11.20
Each
units
8 → 19mm Gear Coupling 32mm - - 16Nm - 1mm - -
RS Stock No. 814-607
Mfr. Part No.PSMR19-6-6-A
BrandRuland
€22.44
Each
units
- Beam Coupling 19.1mm 22.9mm - 1.58Nm - 0.203mm 0.127mm -
RS Stock No. 808-7301
Mfr. Part No.ROTEX24-Complete-KTR
BrandKTR
€34.43
Each
units
22 → 28mm Jaw Coupling 56mm 78mm - - - 0.8° 0.22mm -0.5 mm, +1.4mm -
RS Stock No. 808-7367
Mfr. Part No.ROTEX42-Complete-KTR
BrandKTR
€169.96
Each
units
42 → 55mm Jaw Coupling 95mm 126mm - - - 0.9° 0.32mm -1.00 mm, +2.00mm -
RS Stock No. 837-1050
Mfr. Part No.L050
BrandSKF
€11.30
Each
units
6mm Jaw Coupling 27.5mm 16mm - - - - - - -
RS Stock No. 692-8077
Mfr. Part No.450H25.32
BrandHuco
€30.40
1 Bag of 4
Bag(s)
10mm Oldham Coupling 25.4mm - - - - - - - -
RS Stock No. 814-540
Mfr. Part No.PSMR10-3-3-A
BrandRuland
€20.50
Each
units
- Beam Coupling 9.5mm 14.3mm - 0.62Nm - 0.203mm 0.127mm -
RS Stock No. 296-9822
Mfr. Part No.MCLX-8-8-F
BrandRuland
€17.71
Each
units
8mm Shaft Coupling 24mm 35mm - - - - - - -
RS Stock No. 325-8038
Mfr. Part No.MWC15-5-5-SS
BrandRuland
€57.14
Each
units
- Beam Coupling 15mm 20mm - 0.81Nm - 0.2mm 0.12mm -
RS Stock No. 183-192
BrandRS PRO
€13.12
Each
units
28mm Jaw Coupling - 29mm - - - - - - -
RS Stock No. 745-8083
Mfr. Part No.OCT16-4-A
BrandRuland
€12.60
Each
units
6.35mm Oldham Coupling 25.4mm - - - - - - - -