Comments for Relationship of Torque and Shaft Size at http://pump-zone.com , comment 1 to 4 out of 4 comments http://pump-zone.com Thu, 29 Jul 2010 20:31:55 +0100 FeedCreator 1.7.3 http://pump-zone.com/motors/motors/relationship-of-torque-and-shaft-size.html#comment-597 I must point out that all of these calculations are for static strength only! If the shaft is running through a torsional critical speed, the torque can easily be double or triple the static value. And with keyways or sharp fillets, there is a stress concentration factor. For dynamic reasons, don't consider thinning up a shaft unless you are certain there is no possibility of running through a torsional resonance! - Lyn Greenhill Thu, 22 Jul 2010 14:35:54 +0100 http://pump-zone.com/motors/motors/relationship-of-torque-and-shaft-size.html#comment-588 I am trying to design a shaft for the drum of a mooring winch reel to be used in ocean wave energy conversion. The winch reel speeds are very low (less than 10 rpm) which requires a very large shaft (12+ inches) by these equations. Is there a method to calculate shaft size without using angular velocity (rpm)? - Michael Raftery Wed, 07 Jul 2010 07:55:19 +0100 http://pump-zone.com/motors/motors/relationship-of-torque-and-shaft-size.html#comment-524 Has shaft diameter of a motor got any effect on the perforamance of the motor itself? - Ackim Chirwa Wed, 05 May 2010 01:57:12 +0100 http://pump-zone.com/motors/motors/relationship-of-torque-and-shaft-size.html#comment-447 excuse me can i know the hp of electric motor from diameter of shaft - majid Sat, 16 Jan 2010 04:33:47 +0100