The mechanical drivetrain comprises individual units such as motor, gear unit and driven machine. The coupling connects these component assemblies. As well as the transmission of rotary motion and torque, other requirements may be made of the coupling. » Compensation for shaft misalignment with low restorative forces. » Control of characteristic angular vibration frequency and damping. » Interruption or limitation of torque. » Noise insulation and electrical insulation. Couplings are frequently chosen after the machines to be connected have already been selected. Thanks to a large number of different coupling assembly options, specified marginal conditions for clearance and connection geometry can be met from the standard range. The coupling also performs secondary functions, e.g. providing a brake disk or brake drum for operating or locking brakes, the ability tomeasure rota onal speed and op ons for the a achment of sprockets or pulleys. Couplings are divided into twomain groups, couplings and clutches. Clutches interrupt or limit the transmissible torque. The engaging and disengaging forces on externally operated clutches are introduced via a mechanically, electrically, hydraulically or pneumatically operating mechanism. Overload, centrifugal or freewheel clutches draw their engaging energy from the transmitted output. Rigid couplings, designed as clamp, flanged or mechanism couplings, connect machines whose shafts are perfectly aligned. Hydrodynamic couplings, also known as fluid or Fottinger couplings, are used on applications where there is a need to accelerate driven parts with high mass moment of inertia up to the required operating speed. In drive technology very often flexible, positive couplings, which may be designed to be torsionally rigid, torsionally flexible or highly flexible, are used. SHAFT COUPLINGS COUPLINGS CLUTCHES Externally Operated Clutches Torque Controlled Safety Couplings Speed Controlled Centrifugal Clutches Rotation Direction Controlled Freewheel Clutches Overrunning Clutches Rigid Clamp Couplings Flanged Couplings Mechanism Couplings Flexible Friction Hydrodynamic Couplings Magnetic Couplings Friction Couplings Positive Torsionally Rigid Gear Couplings All Steel Membrane Couplings Universal Joint Couplings Parallel Crank Couplings Torsionally Flexible Steel Spring Couplings Pin and Bush Couplings Pin Couplings Rubber Element Couplings Highly Flexible Rubber Tyre Couplings Rubber Disc Couplings Rubber Spacer Ring Couplings Technical Information Mechanical Power Transmission Couplings www.jbj.co.uk/couplings.html#flender 1 #DriveLineHarmony
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