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HUB

The portion of the coupling that attaches to the shaft.

Related Terms

QUICK DISCONNECT COUPLING

A coupling which can quickly join or separate lines.

COUPLING

A straight connector for shafts or flow lines.

PROPELLER

An arrangement which consists of hub and number of blades mounted on a rigid shaft protruding from the hull of a vessel, usually driven by an inboard motor.

FAST TIME CONSTANT CIRCUIT

A type of coupling circuit, with high pass frequency characteristics used in radar receivers to permit discrimination against received pulses of duration longer than the transmitted pulse. With the fast time constant (FTC) circuit in operation, only the leading edge of an echo having a long time duration is displayed on the radarscope. The use of this circuit tends to reduce saturation of the scope which could be caused by clutter. Also called ANTI-CLUTTER, RAIN, DIFFERENTIATOR

CLEARANCE FIT


One piece in assembly slightly large than the other. F.e. hub that is frequently removed from a shaft. Also called sliding fit

SACRIFICIAL ANODES

Coupling of a more active metal to a structure resulting in a galvanic current flow through the corroding electrolyte.

ELASTOMERIC

A coupling that has resilient materials through which the power is transmitted. They are in some way attached to the coupling halves. They are usually made of rubber, synthetic rubber or plastic materials.

FLANGED COUPLINGS

A type of rigidity coupling used to join shafts of the same or different diameter. Keys are required.

FRAME-MOUNTED PUMP

End suction centrifugal pumps designed so that the pump bearings and pump shaft are independent of the motor. This type of pump requires a coupling between the pump and the motor in order to transfer energy from the motor to the pump.

GRID-TYPE COUPLING

A mechanical coupling in which a metal grid is meshed between the teeth of two shaft hubs.
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