Rigid couplings are used to connect shafts that are precisely aligned.

Flexible couplings are used to connect shafts that need to be accommodated for their misalignment.

Flanged couplings are designed for use in low torque applications under 20,000 ft-lbs.

Sleeve couplings attach to shafts with locking setscrews.

Clamp rigid couplings allow for even distribution of clamping forces around the shaft.

Flexible couplings can accommodate up to 3 degrees of angular misalignment between shafts.

To reduce wear, some gear couplings are hardened

Manufacturers rate a coupling for its maximum misalignment capability.

Disc couplings transmit torque by a simple tensile force.

Chain couplings are selected for applications requiring low torque at high speeds.

Chain couplings are inherently quiet and have high vibration-dampening capability.

Hardened bushings and sprocket teeth increase wear.

Jaw couplings can have zero-backlash or non-zero backlash performance.

A metallic-grid coupling consists of two hubs with multiple slots through which a steel strip or grid weaves back and forth.

Spring couplings allow up to 1/8 in. parallel misalignments.

Oldham couplings are best suited for angular misalignment.

Universal joints should be used in applications requiring zero-backlash.

The AGMA publishes standards for flexible couplings.

Fluid couplings consist of a single hollow bowl filled with a fluid.

The rigid coupling with the highest RPM capacity is the:

Flexible shaft couplings provide flexing by:

When misalignment is present gear couplings have:

Plastic-chain couplings generally use a:

Fluid couplings that cushion startup offer several benefits including:

These universal joints are capable of misalignment up to 90 degrees:

A type of industrial elastomeric element coupling is:

What are the two types of magnetic couplings?

The shape of a disc coupling can be:

The primary advantage(s) of multiple sets of spiral cuts in beam couplings is:

Friction type clutches and brakes are the most common general purpose types.

Friction type clutches and brakes are all manufactured with fluid actuation.

C-Frame mount clutch/brake systems are popular but very difficult to connect.

The C-Frame mount style clutch/brake lends itself well to the food and braking industries.

Multiple-plate units produce large amounts of torque in a smaller diameter compared to single plate designs.

Caliper units are also non-friction interface units.

Multiple-plate clutch units produce large amounts of torque in a small diameter.

Eddy-current clutches and brakes cannot perform at zero slip.

Thermal Energy (slip watts) Tension Applications are considered continuous slip applications. In slip conditions, magnetic particle brakes generate considerable heat.

Precise control is a valuable, widely exploited nature of a hysteresis brake.

Hysteresis units suffer quick wear and have limited service life.

One of the newest clutching methods is a mechanical-lockup.

Square jaw clutches allow smooth, ramped engagement at speeds to 150 rpm in either direction.

Spring clutches are not suited for high speed.

The sprag clutch is bi-directional.

The roller-ramp clutch transmits torque through rollers that move on ramped-surface portions of an inner race (hub).

The disadvantage of mechanical actuation of clutches and brakes is the need for an operator

Electric actuation should be considered where remote control is desired or where special slip characteristics are needed.

To improve cooling, friction elements in multiple-disc clutches and brakes are often immersed in oil.

Mechanical actuation force of clutches and brakes is limited to:

For the actuation of clutches and brakes, the highest torque per unit volume is delivered by the following method:

The actuation unit typically requiring an exhaust valve and muffler is:

The most common general purpose clutches and brakes are:

The actuation method that can respond fastest is:

The mechanical-lockup clutch that can engage at speeds up to 400 rpm is the:

The least compact clutch is the:

A friction-type clutch intended for continuous slip duty is the:

A brake compromised of a rotating drum with a flexible steel band and lined with friction materials is called a: