Re: [CAD_CAM_EDM_DRO] Router life, getting better bearings,

Brent,

Your problem may be with the foam that you are cutting.

I used a Bosch router cutting Sentra (PVC sheet material). The bearings
started to make a lot of noise after about 100 hours.

Sheet PVC does put off a gas that has an effect on the bearings.

The PC 3.25 HP router should last about six months with constant use. I had
one customer who would run his machine all night. About ever five months
before the bearing replacement warranty from PC ran out he would take the
router back and have the bearings replaced free.

Bob Campbell

----- Original Message -----
From: "thorcnc" <bthorley@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, November 01, 2003 12:22 AM
Subject: [CAD_CAM_EDM_DRO] Router life, getting better bearings,


> Hey all,
>
> I have been using a 3.25Hp Porter Cable 5-speed router on my CNC
> table, and I am finding that the bearings are wearing only after
> about 100 hours of use. I've just worn the bearings on my second
> router (purchased while the first one was being rebuilt, complements
> of Porter Cable). I see the wear by the amount of axial end-play --
> .010" is too much for me and too much according to Porter Cable.
>
> I thought I read a post that someone had their PC router rebuilt with
> better bearings? Have any of you done this? How much does this
> improve the life between rebuilds?
>
> Does anybody have suggestions for a better single-phase current
> router suggestion? The repair shop I went to stated that Porter
> Cable is pretty much the best for single phase, but I wanted to check
> with your experiences.
>
> Another question re: Speed control on routers. I'm finding my PC
> 3.25Hp can really start to hunt for the correct speed when under a
> pretty heavy load. This is at either 10K or 13K rpm. I'm trying to
> keep the speed down for proper feeds & speeds. Ideally I'd like to
> have some more speed flexibility than 10K-21K rpm so I can use some
> larger bits, such as 1/2". (By the way, I mostly cut very high
> density foam, not metal.) Any suggestions?
>
> Thanks in advance! Great forum!
>
> Brent
>
>
>
>
>
>
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