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Equipment Outfitting a serious gym. Vendors & suppliers. Devices & equipment

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Old 03-30-2006, 02:31 PM   #1
Dan Snyder
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Does anyone know where I can get a pair of the rollers pictured below? It'd be great to install a rolling pullup bar at work.
http://www.crossfit.com/discus/messages/26/22218.jpg
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Old 03-30-2006, 03:25 PM   #2
Doug Ralston
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Dan,
The object in the photo is called a pillow block bearing. Any bearing or power transmission supplier will have a few dozen on the shelves. Not to make any recomendations, but Kaman Industrial and Applied Industrial Technologies both have locations in the Denver area.
Do you have a regular pull-up bar at work? If you can wait a couple of days I'll post some photos of a real cheap version of a rolling pull-up bar (that can hang from a regular pull-up bar) that I've put together.

Doug
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Old 03-30-2006, 03:43 PM   #3
Paul Findley
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McMaster Carr also.
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Old 03-30-2006, 08:14 PM   #4
Dan Snyder
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Excellent, thanks!
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Old 03-31-2006, 06:53 AM   #5
Doug Ralston
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Here's the quick and dirty description of what I've done several times. I press a pair of bearings into the end of a piece of pipe or tube, run a piece of allthread through it and lock everything in place with a pair of nuts. The rolling bar hangs from a standard pull-up bar on a pair of rope loops.
Here's the end of the roller.
http://www.crossfit.com/discus/messages/26/22251.jpg
The washer inbetween the nuts just makes sure that the rope loop doesn't slide off.

Here are the bearings.
http://www.crossfit.com/discus/messages/26/22252.jpg

I've bought the bearings at a local hardware store and used electrical conduit for the pipe. I recommend trying to get the bearings and the pipe at the same time so you can test fit the pieces.
I'll try to do a more thorough write up later.

Doug
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Old 03-31-2006, 07:17 AM   #6
Michael Ledney
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Even more quick and dirty, we've put an othwerwise unsecured 1 1/4" bar around a mounted 3/4" bar. Doesn't rotate entirely freely, but freely enough to give me popeye forearms.
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