Recent content by tpa

The box is placed on the conveyor rollers and must "self start" with no assist down the conveyor. That is the formula I am looking for. How do you calculate the start up torque required for a self start in this scenario "per roller" under the box.

Thanks for the correction, as I mentioned it is the only formula for this calculation I could find and it was printed that way. The math I can correct, the real question is, is the formula correct??

Attached is the only information I have ever seen on start up torque. Included is a sample roller drawing of a 1.9" OD roller with ball bearings each end and a shaft through the bore of the bearings. The shaft ends mount in a frame and the roller tube turns. can you verify the calculation is...

Nidum, Customer is demanding values for start up torque for every roller produced. Even though they are all the same product. My way of thinking is that first we need to establish how much start up torque is required to get that 5 pound box to free start when it sits on 4 to 6 rollers, then...

The problems I have are these: 1. I still need a formula to that shows how to calculate the value. 2. The machine I am talking about needs to be able to measure the value of at minimum 3500 different tubes per day. On a production basis. I don't know if that could be accomplished by using a...

How to calculate the start up torque in inch pounds to start a plastic tube of 1.90" OD x 1.50" Id that has a shaft and ball bearings on each end. The shaft will be supported on each end, and will not rotate. The tube is horizontal. It would be similar to putting a conveyor roller in a frame...