Difference Between Spindle and Shaft?

@Keerthivasan Ravisankar • 04 Feb, 2012 • 2 likes "SPINDLE"
https://www.yourdictionary.com/spindle
https://www.thefreedictionary.com/spindle
The Spindle is driving shaft in a lathe in which chuck is connected to it directly.
Where as
"SHAFT"
https://www.thefreedictionary.com/shaft
A shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance from power transmission which is also called as driving shaft.

@ArunSrinivassan • 05 Feb, 2012

rkvasan68

"SPINDLE"
https://www.yourdictionary.com/spindle
https://www.thefreedictionary.com/spindle
The Spindle is driving shaft in a lathe in which chuck is connected to it directly.
Where as
"SHAFT"
https://www.thefreedictionary.com/shaft
A shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance from power transmission which is also called as driving shaft.

Thank u sir...........Hope to have more doubts that can be clarified from u as well as frm other seniors

@Keerthivasan Ravisankar • 06 Feb, 2012 You are welcome

@zaveri • 24 Mar, 2012 • 6 likes shaft : transmits torque and supports the driven member

spindle : transmits torque only, but does not support any driven member

similarly there is another type of shaft which is designed only as a load carrying member and not torque transmission. that is the axle shaft in automobiles

@Siddhant Mukherjee • 25 Mar, 2012 • 1 like spindle is a wider term than that of shaft . It consists of the rotating axis of a machine tool including the shaft, bearings and parts attached to it such as centers in case of lathe. But the shaft is the main component which defines the spindle.

so we can say that every spindle is a shaft but every shaft is not a spindle.

@Teja Reddy • 27 Feb, 2020

Shaft :- shaft is used for the transmission of torque and bending moment. The various members are mounted on the shaft by means of keys or splines. The shafts are usually cylindrical, but may be square or cross-shaped in section. They are solid in cross-section but sometimes hollow shafts are also used.

An axle, though similar in shape to the shaft, is a stationary machine element and is used for the transmission of bending moment only. It simply acts as a support for some rotating body such as hoisting drum, a car wheel or a rope sheave.

A spindle is a short shaft that imparts motion either to a cutting tool (e.g. drill press spindles) or to a work piece (e.g. lathe spindles).