overrunning clutch

[Matt51]

Hi,

I need a sanity check. If I have a shaft at rest connecting through the bore of a sprag clutch, which is also the output shaft. And I have a faster running shaft connected to the od of the sprag. In normal operation, the faster running shaft connects to the output shaft through the sprag clutch. Both shafts turning in the same direction. Then I want to turn on the inner shaft, which was at rest. So lets say the outer race is running at 3000 rpm. My inner shaft is now driven, at the same time the outer is driven. The inner shaft is now at 1000 rpm. Will the output be 1000 rpm? Or have I broken the clutch?
Thanks for any help.

 

[MikeHalloran]

To connect three shafts so that the faster input always drives the output, you need two sprag clutches.



Mike Halloran
Pembroke Pines, FL, USA

 

[desertfox]

Hi Matt51

Go to page 22 of this catalogue it explains relative overrun speeds which should answer your question.

http://www.formsprag.com/litportal/pdfs/P-1052-FCLO.pdf

regards

desertfox

 

[Matt51]

Thanks guys,

I have it sorted out now. I appreciate this forum, as people are very helpful.