Coupling Flashcards
5 types of ridgid coupling
sleeve compression ribbed flange face threaded
simple rigid coupling use in low speed and low torque application made of a heavy walled tube .Has a keyway in the bore and set of set screws
sleeve coupling
rigid coupling grip shafts using tapered sleeve in tapered hub. Use in moderate to light loads
compression coupling
rigid coupling used in heavy load and torque services. The two halves of the coupling are split parallel to the shaft axes and have machined keyways in both shafts
ribbed coupling
Coupling use in vertical pumps to connect shafts of different diameter
rigid multibore
Rigid coupling with male and female counterpart. Shafts locked into place with key and setscrew
flange face coupling
Rigid coupling common on vertical pumps where drive unit is connect to the pump by a series of drive shafts
threaded coupling
The amount of allowable misalignment for various types of coupling specified by manufacturer
absolute maximum
3 ways flexible coupling are classified
mechanically flexible
material flexible
combination
4 types of mechanically flexible coupling
roller
silent
synthetic chain
gear
mechanically flexible coupling with 2 sprockets keyed to the shaft
roller chain
mechanically flexible coupling for heavy duty drives used on two wide sprockets
silent chain coupling
mechanically flexible coupling used in light drives, for food, textile or other industries where oil and gas is not desirable
synthetic chain coupling
mechanically flexible coupling with 2 hubs with external sleeve and a sleeve with internal teeth
gear coupling
4 types of material flexible coupling
rubber tire
elastomeric
pin and biscuit
flexible metal disc coupling
5 types of material and mechanically flexible coupling
steel grid jaw and spider splined and rubber pin and disc pin and rubber
material and mechanically flexible coupling with steel spring grid that allows for torsional flexibility and minor amounts of misalignment
steel grid coupling
material and mechanically flexible coupling torque passed through spider and spider insert acts as a dampener reducing shock and vibration
jaw and spider coupling
material and mechanically flexible coupling with a rubber sleeve with internal and external teeth. High torsional flexibility, can tolerate shock loads, reversing and dampen vibration. Allows shaft misalignment and considerable axial movement
splined rubber coupling
material and mechanically flexible coupling with flexible disc to transmit power between hubs with pins
pin and disc coupling
material and mechanically flexible coupling consist of 2 hubs. One has holes all around and the other removal rubber studs.
pin and rubber coupling.
Joint with 2 yokes for one angle, and limited to low forces, speeds and small angle
single universal joint
2 universal joints for angular and parallel offset. Angles are equal
Double universal joint
2 universal joints when angles are unequal
Constant velocity joint
4 characteristic of centrifucal design coupling
soft start
smooth acceleration
overload protection
dampening shock loads
what are the 2 operating members in a fluid coupling
impeller or pump
turbine or runner
Amount of slip in fluid coupling
2-6%
How much to fill fluid coupling
80% of maximum
shearing pin couplings are made of soft steels such as
mild steel
brass
aluminum
copper
2 coupllngs used to change shafting space
spacer
floating
5 high power and torque coupling
gear universal joint silent chain flange face flexible metal disc
6 low powered coupling
sleeve coupling roller chain rubber tire steel grid jaw and spider splined rubber
