Dog & Spline Clutch

The complete guide about Dog and Spline Clutch. Here we provide Dog and Spline Clutch working, Advantages (Pro’s), Disadvantages (Con’s), and Applications, etc.



What is Dog Clutch?

Dog clutch is a type of clutch that is used to lock two shafts or shaft and the gearbox. The two parts of clutch one push the other and it causes both shafts to rotate with the same speed and without slipping.



What is the Spline Clutch?

The spline is a tooth on the driven shaft that mesh with grooves in a mating piece and it is used to transfer torque to it. It has an angular correspondence between them. A gear on the shaft has a male spline on the shaft and it matches with the female spline on the gear.

The splines on the drive shaft match with the female splines in the center of the clutch plate, when the smooth tip of the axle is supported in the pilot bearing in the flywheel.



Working of Dog and Spline Clutch

This type of clutch is used to connect or lock two shafts. It has a sleeve having two sets of internal splines. The internal splines slide on a splined shaft with smaller diameter splines and the bigger diameter spline match with the external diameter.

The sleeve is made to slide on the splined shaft and its teeth match with the dog clutch teeth of the driving shaft. Thus the sleeve turns the splined shaft with a driving shaft. When the clutch is engaged this process is dun.

In order to disengage the clutch, the sleeve is moved back on the splined shaft to avoid contact with the driving shaft. The driven shaft revolves exactly with the driving shaft with same speed when the clutch is engaged. This is also known as the Positive clutch.




⦁ It is used in Sturmey Archer bicycle hub gear.
⦁ It is used in manual automobile gearbox.




⦁ This type of clutch does not slip.
⦁ It transmits large torque.
⦁ It will not produce heat during engagement or disengagement.




⦁ During high-speed engagement of the clutch is not possible.
⦁ During starting some relative motion may be required to engage.





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