Driving up the portcullis

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Driving up the portcullis

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18-01-2016, 21:11

Bob Steele Bob Steele is offline

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Re: Driving up the portcullis

Quote:

Originally Posted by RoboChair

The portcullis uses ball bearings at the top and bottom of the door in a steel track. So even with huge side loads there should be very little friction(page 253 of 2016FieldComponents.pdf)

bearings at the top and bottom... Not sure i understand...
Do you mean the top and bottom of the sides? Probably ...

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