Re: [mill_drill] Harbor Freight Mill/Drill 33686 Bearing ?
- FrankCheck the bearing race ( the taperd cup ) it you find wear or a rige in it i would by all means replace the bearingsGP
From: Druid Noibn <druid_noibn@...>
Sent: Mon, February 25, 2013 8:56:28 AM
Subject: Re: [mill_drill] Harbor Freight Mill/Drill 33686 Bearing ?
Hi Frank,Just an additional 2-cents worth....Like the others, I do not see an advantage to replacing the original tapered bearing with the angular contact type. The added cost for the new bearings won't translate to benefit in the operation of the machine. I do see that the new AC bearings are likley to get beaten-up a bit due to the application.Get new taper bearings and races - clean out the old crud and well-lube the new ones - pay good attention to instlaltion and all will be well.Take care,DBN
--- On Sun, 2/24/13, olds7d442 <olds7d442@...> wrote:
From: olds7d442 <olds7d442@...>
Subject: [mill_drill] Harbor Freight Mill/Drill 33686 Bearing ?
Date: Sunday, February 24, 2013, 10:08 PMI have a harbor freight mill/drill and I took out the quill and spindle to check the bearings. The grease was old and the bearings are made in China. The bearings are a tapered roller bearing part #'s 30206p5 and a 30207p5. I decided to just replace them with a quality p5 tapered roller bearing with brand new grease and call it a day. Well. I got to thinking, what if I was to replace these with an angular contact bearing. The bearings I was looking at have the exact same dimensions as the tapered bearings and are a 7206p4 and a 7207p4. Here is a link to one of the bearings on ebay: http://www.ebay.com/itm/7207CYP4-Nachi-Angular-Contact-35x72x17-Abec-7-35mm-72mm-17mm-Ball-Ball-Bearings-/400241206925?pt=LH_DefaultDomain_0&hash=item5d303c268d
The bearings are obviously a lot more expensive then the tapered roller bearing and I was just wondering if:
1)I was wasting my money with this type of machine.
2)Is there a benefit to angular contact over the tapered bearings in my application.
3)Has anyone ever done this on this machine before?
Any and all answers are greatly appreciated.
- I am not sure what your milling table looks like but would you be able to
mount your tools on an adapter plate? I have this small vise attached to a
3/8 steel plate. It makes for very quick angle set-ups on the mill and
will bolt down to many of my other fixtures.