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Old 09-27-2013, 12:19 PM   #21
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Naw. He indicated that a foot of suitable delrin would already cost 150 bucks, and you may as well mill a couple of spares for that price. I don't know what kind of material Krogen is quoting, but the price sounds better all the time. Sorry.
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Old 09-27-2013, 01:30 PM   #22
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That 5" Windline roller looks like your best bet to me. I think you would have to drill out the hole to accept your 1" shaft. You could file or machine a groove, but I'd worry that there wasn't enough material between the groove and the shaft hole.
I may have one in my store. When I get to work I'll take a look and see how thick it will be after drilling it out to 1".

I think that was one of the reasons yours broke, not enough material between the groove and the shaft hole.
Thanks but I think part of the failure, if you look at picture in post #1, is the grove was not wide enough for the "new" anchor that we bought last March. The new roller will accommodate the "new" anchor shank width.

I talked to a plastics guy about the groove. With 1" diameter hole and the groove cut at 2.5" of the 5" diameter stock, the UHMW will have enough strength.
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Old 09-27-2013, 02:24 PM   #23
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Naw. He indicated that a foot of suitable delrin would already cost 150 bucks, and you may as well mill a couple of spares for that price. I don't know what kind of material Krogen is quoting, but the price sounds better all the time. Sorry.
Thanks for the effort! I looked at Delrin and came up with the about the same $'s. The plastics guy I talked to said UHMW (black) was a good choice and will last.

I'm not sure what Krogen uses either. They would have it made over seas with one of their suppliers that makes the rollers for Krogen.

I just heard back from a machine shop here in Jacksonville. Without seeing the roller, but I gave them all the specs, $75-100 each. I can get black UHMW for $63 which will make 2. Krogen is $118 each. So the numbers are pretty close and I get exactly what I want. I'll go visit the shop next week and let you know what I find out.
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Old 09-28-2013, 01:51 AM   #24
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What about a synthetic roller from a boat trailer manufacturer. They would have a range of sizes, and they would be so cheap it would be feasible to replace it every few years if it wore, and that's a big if, as they are made of the UHMW stuff. The rollers my Sarca sits on are made of that, and I can hardly see any wear after 10 years use, and with all chain rattling over it.
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Old 09-29-2013, 08:20 AM   #25
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What about a synthetic roller from a boat trailer manufacturer. They would have a range of sizes, and they would be so cheap it would be feasible to replace it every few years if it wore, and that's a big if, as they are made of the UHMW stuff. The rollers my Sarca sits on are made of that, and I can hardly see any wear after 10 years use, and with all chain rattling over it.
Peter: you confirmed what I've been told that the UHMW is good stuff. I checked with 2 boat trailer manufacturers. They don't have the size I'm looking for so I would still have to put it on a lathe and drill the hole out. I did got an email back from Winline (thanks Bensjoy).

Hi Larry,

I will send this to someone to see if we can make it or if we have it.

All the best,
Windline

I'll decide what route we're taking in the next week or so.
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Old 09-29-2013, 01:51 PM   #26
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If boat trailer rollers are an option, try eastern marine.com
A lot of options
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Old 09-30-2013, 08:01 AM   #27
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I had one fail at the end of last season and had no luck finding a relacement with the correct size hole (5/8"). So I was able to have a couple made in our shop out of black Delrin. It was about a 30 minute job to make 2 by a guy on an old CNC lathe.

So far so good after one season.
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Old 09-30-2013, 01:25 PM   #28
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An OLD CNC lathe?! Dang, I been around too long!
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Old 09-30-2013, 02:07 PM   #29
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An OLD CNC lathe?! Dang, I been around too long!
Maybe you're right, Steve. The rest of us don't remember a CNC, cuz they didn't start making them until we were out of the business. Here's the one I started on....Barnes Velocipede.
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Old 10-24-2013, 03:31 PM   #30
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I picked up the new anchor rollers today. Here's the before and afters. The 12" x 5" piece of black UHMW-PE from Granger's was $68. The CNC machine shop here in Jacksonville was $149 for both. The end cost, with tax, was $108.50/roller. Krogen quoted $118/per plus tax and shipping from Stuart.

The only change I made was having the groove cut for the width of the anchor shank. Hopefully this will be the last time I have to replace them. Thanks all.
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Old 10-24-2013, 03:39 PM   #31
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Great looking result. No doubt, you saved yourself some wear and tear by grooving the roller to match the anchor shank, and at a savings too!
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