It is currently 29 Mar 2024, 14:57
Trevanion wrote:Hello Scaron, Welcome to the Woodhaven
Well, I think you came to the right place to ask, does it look anything like this one out of my catalogues?
I personally suspect that C.D. Monninger didn't actually make their own machinery and that they were bought in from a different manufacturer, although I could be wrong, the people who would know for definite are long dead.
So to your machine, generally for cutting wood you want the rim-speed of the wheels to be somewhere between 4000-5000 feet per minute, which on 24" wheels your circumference would be 75.4"
4000 x 12 = 48000 inches / 75.4 = 636RPM
5000 x 12 = 60000 inches / 75.4 = 795RPM
So realistically you want your wheel RPM to be about 650-800RPM for efficient woodcutting, so realistically your 8-pole motor would simply need a 10" flat pulley to achieve about the right speed at a 1:1 ratio, it should be powerful enough for the job if you have a three-phase supply.
Scaron wrote: having CD Monninger, St Anna Works in raised lettering in brass. It appears to be an older model than your catalogue one because the shaft bearings are the plain (sleeve type?) not ball type, if it is a Monninger.
Scaron wrote:So,assuming the saw is one of the old variety, mainly from the plain bearing, should it be run at a slower speed than 4000 ft. p.m. The drive shaft was replaced with a new one a while back so there is no movement at all there, however, would there be a danger of overheating? I am thinking that there is more friction in a plain bearing than ball type. Should I set it up with speed between 2000 to 3000 ft. p.m. or would that make it too inefficient? Or maybe install ball bearings? Your comments,as always, are received gratefully.
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