can any one convert used machine to be new

[eng_rady]

can we convert the used thicknesser machine to be new ( good accuracy, high productivity )

how can we do this :C

[seanz]

Welcome aboard.

Can you tell the forum who manufactured the machine and what type it is?

I'm not a machine expert, so I will get out of the way now......hopefully an expert will be along soon.

[eng_rady]

the machine type is: scm-s630

i need the steps which i should do to maintain this machine

q1 : is it necessary to change all ball bearing?

q2 : is it necessary to turn the main arbor , and equilibrium?

q3 : if the maintenance procedure may make the used machine like the new one , why we have to buy new , why we don't buy used machines all time

[Master Splinter]

Rebuild to original manufacturers tolerances. Wear will most likely be apparent on bearings and any sliding parts, or on parts that have accidentally come into contact with the cutterhead.

Read the threads on lathe rebuilding for an idea of the processes involved; often this is a 'not economically feasible' activity if you can't do it all yourself. (even so, I suspect a few home rebuilders have spent more than the new price on reconditioning things!!)

You may find it's cheaper to buy a new one, especially if you have to hunt up specialised items like high precision bearings (ie not the normal off the shelf bearings) or get slides reground by a specialist machining firm - these sorts of things are not cheap.

[Master Splinter]

And why do we buy new...?

If you are doing a proper reconditioning job, the cost soon adds up - you're only buying one set of bearings, so it's going to cost you $25 (or $250 if they are high precision bearings), unlike the manufacturer who is buying 5,000 of them for $2.50 each.

If you are re-rubbering one set of infeed rollers, that's a custom job that might cost $200, compared to the manufacturer who has the equipment to do a run of 10,000 for $0.50 each.

[Cruzi]

Looks more like an industrial machine if this is the right machine:


Powered table lifting, complete with electronic digital readout of the working height (CE version) ,Working width 630 mm, Worktable dimension 640x1000mm, Working width 630mm, Max. (min.) working height 300 (3,5)mm,Min. working length 260mm, Max. stock removal 8mm, Cutterblock diameter (No. of knives) 120 (4)mm,Cutterblock speed 4500r.p.m,Feed speed 5-8-12-19m/min,Motor power KW (HP)5,5

Refurbishment may be cheaper if done by properly qualified agency.

[gerhard]

Of course you will have checked the blade sharpness, i wouldn't want to insult you by even bringing up the subject, but just for the general forum's sake i'm only mentioning it because dull blades are the first reason for result precision gradually going out the window. Dull blades squeeze and scrape the wood rather than slice and cut it, causing lots of pinching forces, with hard parts of the wood stock reacting differently from soft and more resilient parts.

If there is any serious play in the drum's bearings, you would be the first to know, because the running noise would be deafening. Bearing play starts to exist when there have been many hours of dry running without lubrication, or running in soiled conditions (penetrated dust or clogged remnants in the ball grooves) and odd noises will already be heard in early stages. Normal bearing wear does not usually result in noticeable planing depth faults or lack of precision.
The cause of precision faults must rather be found in play in the mechanical adjustments of all guiding and feeding parts around the blade drum/block/cylinder, like -for instance- in the threaded feeding table drive columns. Check all these adjustable parts around the blade drum first, before you disassemble the entire machine, which is a lot of work -and possibly not even necessary.

If there is indeed considerable play in the machine, you must rebuild it with possibly a lot of new components, which may turn out to be quite costly (provided the parts are still to be had). Universal parts like bearings will not be the problem, but custom-made one-off parts for specific models only, can be a headache to find.

success

gerhard

[joe greiner]

Additional to "why do we buy new?" -

If we all buy used machines, and refurbish them to original specifications, at any cost in labor and materials, eventually new machines will cease being manufactured. Then there will be no used machines available for repair.

Cheers,
Joe

[gerhard]

Hahaha, hi, Joe!

Yes, you've got a big point! But since i took hundreds of machines out of circulation in order to restore them for display purposes (which means that people can't buy and use them and have to search other machines), i think that i contributed in keeping the tool merchandise alive and don't have to feel all too guilty about it!

Cheers from Holland!

gerhard