problem with bosh ROS

**EMistral** · 16th January 2006, 02:41 PM

Hi guys,

you are going to think that I am stupid and you'll be right

Anyway I am renovating a room and after ripping the carpet off I have decided to sand the floor
It is a small room so I could not be bothered going out and rent a floor sander.
I used my Bosch PXE400 ROS.
The first night was fine. I used it for an hour and a bit
The second night was also fine but because it was producing great results, time flew and I realised I used it for 2.5 hours
I had to stop because I smelt burnt rubber
I had a look and the rubber sole on which you stick the velcro sanding pads had melted.
In fact it melted because the axle/arbour in which you screw the nut to hold the sole was pretty hot
At that point I thought the ROS was gone but I changed the pad, put a new one and just switched it on. Everything seemed OK but I stopped using it for a week
Yesterday I decided to finish sanding the floor
I switched it on and within 2-3 minutes, the axle/arbour was so hot that it melted again the rubber sole.
So now there is effectively a problem with the sander itself
I opened it to see if there was anything obivious like dust obstructing air vents, etc... but nothing
I also had a look at the axle/arbour and the part on which you screw the nuts seems to move
But I don't know if it is supposed to move or not.
And trying to use it is impossible since it generates so much vibrations that you can not even hold it in place

This ROS has a variable speed thumbwheel and when set to the lowest one, it can hardly move if not.
So I was wondering that maybe the excessive heat has dilated the arbour and changed its shape to the point that it is irreversible

I know it is my own fault and it is not designed for this type of job but the results were so great that I kept going.

Has anybody an idea of what could be wrong?
Is it worth it having it fixed ?
I paid this $160 2.5 years ago and I am guessing if I have it repaired, It could cost me $100, maybe more.
I was thinking that maybe buying a new one would be better than having it fixed
Thanks
Eric

**Greg Q** · 16th January 2006, 02:51 PM

Yeah, sounds like the little POS bearing has died. The one that supports the shaft at the bottom of the housing, just above the pad.

Remove the pad-there will be a centrally located fastener, often a 5mm hex screw. The pad will come off, revealing the bearing housing. (Yov may have to disassemble farther to remove the bearing.

Pass the Boschrepair place and do not even slow down (unless you need a new pad, too). Instead, go to a bearing supply shop, hand over your toasted bearing and pay $15.00 or less for a replacement. Re-install and finish the floor. Maybe buy two, and next time note that the duty cycle of a hand tool is something much less than 2.5 hours.

Cheers

Greg

**EMistral** · 16th January 2006, 04:16 PM

Hi Greg,

Thanks for your advice.
I have noticed that you ar ein Templestowe
I live in doncaster. do you know any bearing supply shop in the area?
Bearing shops are not the type of shop I usually go and I would have no idea where to look for (yellow pages or internet maybe but always better to go to a place someone recommends)
Thanks

**Greg Q** · 16th January 2006, 04:17 PM

I'll send you a PM...

Greg

**Sturdee** · 16th January 2006, 04:38 PM

Originally Posted by EMistral

I live in doncaster. do you know any bearing supply shop in the area?

There is a bearing shop in Nunawading, on Rooks Rd right next to the railway crossing near Whitehorse Rd. Can't remember the name but they have been there for more than 30 year ( that I can remember :eek: ) and they stock all kinds of bearings.

They were very helpfull to me when I needed bearings for building my drumsander. I can recommend them.

Peter.

**Greg Q** · 16th January 2006, 04:42 PM

Originally Posted by Sturdee

There is a bearing shop in Nunawading, .....They were very helpfull to me when I needed bearings for building my drumsander. I can recommend them.

Peter.

Thanks Peter, I'm going to attach this to my tool box.

editted because I see yours was homebuilt. Happy with it?
Greg

**EMistral** · 16th January 2006, 04:49 PM

Thanks Sturdee
I'll remember that too
always good to know a place someone is happy with

**Sturdee** · 16th January 2006, 04:51 PM

Yes, worth the effort of making it.

I found out that the sandpaper needed to be cloth backed, and I've recently picked up a roll at a reasonable price for the sander, but I've still have to try that.

Trouble is I've a number of jobs outside like the garden and BBQ area that needs to be done first before I can get back and hide away in the workshop.

Peter.

**AlexS** · 16th January 2006, 10:22 PM

Don't know about the Bosch, but some ROS have a friction adjustment that controls the amount of 'randomness'. It may be that it's too tight and you're just getting an OS without the R. Just a possibility.

Thread: problem with bosh ROS

Thread Tools

Search Thread

problem with bosh ROS

Similar Threads

Thicknesser Problem

Triton Mitre Problem

Dust Collector Problem

Has any have this problem

Problem with secret nailing stapler

Tags for this Thread

Posting Permissions