Arb190 - how much force to drive the moving roller through the bearings?

[Soeren]

Hi,

 

I had today some piece of iron rod which wrapped around the shaft of the moving roller. I had to dismantle the whole roller slide plate unit, the motor and roller to get rid of this iron, no visible damage from the so far. But I was lucky to have this iron, because I noticed that two screws, which hold together the roler slide plate and guide mounting plate had been gone since my last inspection! This happened some time ago already and caused a major damage, so I'm quite glad to have this iron in the machine and just cheking this by coincidence.

 

However, I'm currently trying to drive the roller shaft throught the two bearings. It looks like I need really a big hammer to do this. I cannot remember how it was two years ago when I had dismantled all these parts, but I would say it wasn't that difficult. And yes, I removed the circlip before ,-)

So just to be on the safe side, could it be that one really need a lot of force to drive the shaft through the bearings? Btw. the roller turns absolutly smooth, I don't think the iron caused any damage.

 

Thanks,
Soeren

[Jase hutch]

Hi Soeren, 

It's normally tight and usually requires a puller although you may be lucky with a large hammer and soft drift to avoid damaging the feedroller shaft.

Jase.

[Soeren]

Okay, thanks Jase, I'll give it a try with a hammer and maybe some wood or piece of pipe with the shaft's diameter.

 

Thanks, Soeren

[Sutton]

Just as metal expands with heat, so it contracts with cold

 

You might not be able to heat up the bearings but

 

Put your iron rod in the freezer for a few hours before hand

[Soeren]

Good hint, but maybe I was a little unclear: I'm currently trying to separate the roller from the plate but the bearings are really tight. For putting everything together that's a good method (just need to check when my wife is away a couple of hours so I'll get a hand on our freezer 😆)

 

Best,
Soeren

[dumper]

You can get freeze spray for installing shafts and bearings get mine from local bearing factor