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79 Cards in this Set
- Front
- Back
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What is the basic purpose of a shaft coupling ? |
Join the driver and driven shafts together |
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For a given horsepower, increasing the speed of the machine________ the torque transmitted. |
Decreases |
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What are three principle types of mechanical couplings ? |
1.Rigid 2.Flexible 3.Universal |
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Which type of mechanical coupling cannot tolerate any misalignment ? |
Rigid |
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Identify 4 sources of misalignment ? |
1. Poor alignment practices 2. Bearing wear 3. Settling of machine foundations 4. Thermal Expansion |
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Compression, Ribbed, Flange Face, and Threaded Couplings are classed as ? |
Rigid |
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Which type of coupling grips the shaft by compressive forces ? |
Compression |
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Which type of coupling is constructed with a male and female flange fitted together ? |
Flange Face |
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Which chain coupling is recommended for high torque loads ? |
Silent chain |
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The working principal of a gear coupling is similar to:______________________ . |
A spline |
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With perfect alignment, all the gear teeth are in contact and the load:______________ . |
Is divided equally among all the teeth |
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Which Type of gear tooth allows for misalignment ? |
Curved gear tooth |
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What is the main advantage of a flexible coupling over a rigid coupling ? |
They compensate for some misalignment |
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What are three types of shaft misalignment ? |
1. Parallel offset 2. Angular 3. Combination parallel and offset |
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A coupling which limits axial movement:____________ |
Should not be used where axial float in the drive exists |
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Flexible couplings can be classified as having _________ . |
1. Material flexibility 2. Mechanical flexibility 3. Combination of material and mechanical flexibility |
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Which type of flexible couplings will have internal clearances provided to allow movement ? |
Mechanical |
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When a shock load is applied through a mechanical flexible coupling, the shock is: ____________________ . |
Direct and virtually undampened |
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Mechanical flexible couplings require lubrication. True Or False ? |
True |
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Identify three types of chain couplings. |
1. Roller chain 2. Silent chain 3. Synthetic chain |
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Which coupling is easily connected/disconnected without disturbing the driver and driven shaft ? |
Roller chain |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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In operation, the application of torque in elastomeric coupling increases the ______________ on the loaded legs. |
Compressive stress |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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In operation, the application of torque in elastomeric coupling increases the ______________ on the loaded legs. |
Compressive stress |
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I the bushings on a pin and rubber bushing coupling are worn, this condition _____________. |
1. Increases mechanical looseness 2. Usually increases vibration 3. Usually occurs because of excessive misalignment |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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In operation, the application of torque in elastomeric coupling increases the ______________ on the loaded legs. |
Compressive stress |
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I the bushings on a pin and rubber bushing coupling are worn, this condition _____________. |
1. Increases mechanical looseness 2. Usually increases vibration 3. Usually occurs because of excessive misalignment |
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Which coupling(s) use resilient steel to give it flexibility Characteristics ? |
1. Roller chain 2. Steel grid |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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In operation, the application of torque in elastomeric coupling increases the ______________ on the loaded legs. |
Compressive stress |
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I the bushings on a pin and rubber bushing coupling are worn, this condition _____________. |
1. Increases mechanical looseness 2. Usually increases vibration 3. Usually occurs because of excessive misalignment |
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Which coupling(s) use resilient steel to give it flexibility Characteristics ? |
1. Roller chain 2. Steel grid |
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A series of steel discs is used in which coupling ? |
Flexible metal disc |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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In operation, the application of torque in elastomeric coupling increases the ______________ on the loaded legs. |
Compressive stress |
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I the bushings on a pin and rubber bushing coupling are worn, this condition _____________. |
1. Increases mechanical looseness 2. Usually increases vibration 3. Usually occurs because of excessive misalignment |
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Which coupling(s) use resilient steel to give it flexibility Characteristics ? |
1. Roller chain 2. Steel grid |
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A series of steel discs is used in which coupling ? |
Flexible metal disc |
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Which material flexible coupling(s) require lubrication ? |
Steel grid |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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In operation, the application of torque in elastomeric coupling increases the ______________ on the loaded legs. |
Compressive stress |
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I the bushings on a pin and rubber bushing coupling are worn, this condition _____________. |
1. Increases mechanical looseness 2. Usually increases vibration 3. Usually occurs because of excessive misalignment |
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Which coupling(s) use resilient steel to give it flexibility Characteristics ? |
1. Roller chain 2. Steel grid |
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A series of steel discs is used in which coupling ? |
Flexible metal disc |
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Which material flexible coupling(s) require lubrication ? |
Steel grid |
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The teeth of a steel grid coupling are _________ to allow minor amounts of misalignment. |
Contoured |
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List three advantages material flexible couplings have over mechanical flexible couplings. |
1. No lubrication 2. Smooth, uniform power transmission 3. Non-conductive |
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Which coupling offers excellent torsional flexibility ? |
Rubber Tire |
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Which flexible coupling uses a pair of three jawed hubs ? |
Jaw and Spider |
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In operation, the application of torque in elastomeric coupling increases the ______________ on the loaded legs. |
Compressive stress |
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I the bushings on a pin and rubber bushing coupling are worn, this condition _____________. |
1. Increases mechanical looseness 2. Usually increases vibration 3. Usually occurs because of excessive misalignment |
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Which coupling(s) use resilient steel to give it flexibility Characteristics ? |
1. Roller chain 2. Steel grid |
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A series of steel discs is used in which coupling ? |
Flexible metal disc |
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Which material flexible coupling(s) require lubrication ? |
Steel grid |
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The teeth of a steel grid coupling are _________ to allow minor amounts of misalignment. |
Contoured |
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Which type of coupling is best used where deliberate misalignment exists in the drive ? |
Universal joint |
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Power is transmitted from one shaft to another through the ____________ of a single universal joint. |
Yoke arrangement |
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Power is transmitted from one shaft to another through the ____________ of a single universal joint. |
Yoke arrangement |
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"Soft star" characteristics apply to which type of coupling ? |
Centrifugal |
