The Shop > Tools
Sieg Super C3 bearing change
John Rudd:
Sooo, after adding the new spacers, time for a trial fit of all the bits..
Apologies for this too...(I'm no good with a camera, can you tell? :lol: )
Now the spindle drive pulley lines up nicely....
After adding the nuts and setting the preload we seem to be getting somewhere..
Even the gears for the tumbler reverse line up... :clap:
Not much left to do now...
John Rudd:
Completion of the rebuild is basically just adding back all the bits that were taken off and giving them a clean and grease/lube in the process...
A couple of more hours work yesterday saw the machine back together in its glory...( is it a 'glory' machine? :scratch: I'm rather taken by it personally...)
I've since added new brass gibs to the crosslide/topslide and made saddle stop and added a qucik change tool post...I've yet to complete the holders for that..
A quick wipe with an oily rag and that's me done....
My thanks go to Ketan and the staff at Arc for their help on relieving of my hard earned for the latheand the gib strip kit and also the advice I received from them on the choice of grease, that was free of charge...
I'd like to thank myself for taking the time to strip and rebuild the lathe and also 'Er indoors' for enduring my never ending whinging about the cold in the garage.
Brass_Machine:
Nice write up! :thumbup:
You said you got a gib kit from Arc?
Eric
Stilldrillin:
Nicely done and shown, John. :clap:
It will make an L of a difference! (Love the soft focus shots)..... :thumbup:
Eric. My lathe's having a brass cross slide gib, sometime this winter.
Near bottom of page...... http://www.arceurotrade.co.uk/Catalogue/Machines-Accessories/Lathes/Model-C3-Mini-Lathe/C3-Super-C3-Mini-Lathe-Accessories/C3-Super-C3-Upgrades
David D
loply:
John,
I have a similar lathe myself and have extensively modified it.
I'm interested in your comments about the taper bearings requiring a sliding fit. I fitted the same to mine many moons ago and this never occurred to me, I just pressed them on using a screw press of some kind. I wonder if I should re-do this.
Whilst I'm here can I share with you what I think is a real big tip for these lathes- The cross slide screw has a 'bearing' surface which is like a plain metal disc turned in to the screw, this bears against the metal part where the dial is. The trouble with this arrangement is that the materials involved are steel on steel which has a bad amount of friction, further compounded by the tightening of cross slide gibs which pushes the two surfaces into each other with greater force. End result? Tightening the cross slide gibs produces a disproportionate increase in force required to turn the cross slide handle, which is small to begin with, meaning you will not tighten the gibs enough.
Solution is to remake the whole lot using thrust bearing to absorb the obvious thrust without increasing friction, and also give yourself a bigger handle with a rotating outer cover whilst you're at it. You will consequently be able to tighten the gibs up to the necessary amount and thus take either larger or more stable cuts.
All of the above applies to the compound too.
I also had good results from increasing the size of the pulley on the back of the headstock, off the top of my head to 67t, whilst decreasing the size of the one on the motor, to give new top speeds of 800rpm and 1600rpm in high and low gears. Makes it a lot harder to stall and allows deeper cuts.
Cheers,
Rich
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version