I am Puzzled By this (work related )

[mallyboppa]

At work we have a 5 Mtr wide Shearing Machine Like this !

If you look at 1:01 on the video you will see that the Cylinder oscillates ( this bit is important !)

we recently had a specialist come in to regrind and lap both cylinders but since then one head has started to vibrate , My boss had him back in and he (suspects ) that the bearings need replacing on that head £900 ! I asked what kind of bearings thinking brass or gunmetal but he said Roller Bearings and he should know .
Back to the oscillating !! How can roller Brgs oscillate ? Anyone have an Idea , We are going to do this work in the next couple of weeks so I will find out (have a couple of theories ) But anyone see how this is Puzzling me ?

answers on a used tenner to Mallyboppa , com

[GLEN......]

Tis Simple......A Roller Bearing Can Indeed Oscillate If One Or More Of The Rollers

Has "Spat The Dummy".......Either By Disintergrating.......Or "Jumping Overboard".......



Cheers Glen.

[mallyboppa]

Tis Simple......A Roller Bearing Can Indeed Oscillate If One Or More Of The Rollers

Has "Spat The Dummy".......Either By Disintergrating.......Or "Jumping Overboard".......



Cheers Glen.

Thanks Glen ! But The Cylinder is (Meant to ) oscillate It has a Mechanism on the end to facilitate that ! What I don't understand is how this can work using roller bearings on the main (Cylinder ) Shaft ?

Have another look at 1:01 on my video (but you have to be quick ! )

[OP1]

I don't know anything about the particulars of this but I know that in general when it comes to repair, sometimes there's little incentive to actually fix things if you get paid more to not fix them and just find more problems.

[mallyboppa]

I don't know anything about the particulars of this but I know that in general when it comes to repair, sometimes there's little incentive to actually fix things if you get paid more to not fix them and just find more problems.

Gorra be fixed mate its vibrating like a Rampant Rabbit

Getting back to my Question ! I suspect the bearings are fitted in a cast iron or Brass sleeve that oscillates in the housing ?
We are doing it in two weeks time so I will post Pictures for anyone Interested

[mallyboppa]

OK we got the bearings out they are needle rollers ( but big )

[mallyboppa]

The rollers run on a hardened sleeve which allow oscillations
but were N.F.G. so had to be replaced

Worn rollers