My Delta Scroll Saw 40-695 motor vibrates almost to a point you can not use it. Motor is loose in the housing. How is this fixed?

check to make sure the tension isn't too tight, loosen and see if starts moving, if not then the motor is bad

a bad centrifugal starter or inside capacitor and or the electric field if an old type with induction motor , but if it has carbon brushes in the motor instead of an induction motor the commutator on the armature short brushes or a bad bearing(s) on the motor or other gearbearings on the saw drive are worn , it must have a smooth turn if turn on the armature if remove the field /motor house.. look in the motor if running at the end if the carbon brushes you see are make to much sparks a worn bearing without the balls or bad armature collectors or electric field . watch if the bearing is worn by blue hot it can have melting the seat in the motor house replace it all.

You must lower the motor down as far as possible and then tilt the saw blade so the back end of the motor where the belt is housed is exposed and accessible as possible. Then remove the cover housing at the back end of the motor. This will expose the belt. Thenyou can remove the old belt and install the new one.

UNPLUG the saw! IF your saw is a direct drive; either the blade is loose or the center of the blade is broken, Or the motor shaft has broke off. IF your saw is BELT DRIVEN, check the belt tension, or belt condition.

Try to contact ereplacement . Or check out the motor from Baldor electric company. They have available motors. If you need band saw blade, my supplier is sawblade.com . Check them out.

There could be several problems. First, make sure you have a sharp blade. Then check the arbor for drag just after you have been using it. Unplug it, lift the motor a bit (to loosen the drive belt) and turn the blade with your hand - it should turn very freely. Check the motor shaft for drag too by turning the motor pulley with your hand (with the belt loose). The motor should have just a tiny bit more drag than the arbor shaft. If all of these check out ok, then you might have an insufficient gage of wire between the electric panel and the saw - a thin wire long extension cord is often a problem. If you are using an extension, try to eliminating it and plugging directly into the wall. (It depends on the length, but in general don't use a cord lighter than 14 ga - higher numbers mean skinnier wire). And it could be that the house wire is too light - a long run of 14 gage wire is too light - you want 12 gage wire and a 20 Amp rated outlet. If all of these are not the problem, then you have a bad motor that is partially burned out (that is, the insulation on the coil windings has melted and the coil wires are shorting out resulting in coils with a lot less turns than the motor was designed for. You can replace the motor or get it re-wound. Good luck!

replace capasitor

The part number you reference is a start capacitor. (details can be seen here: http://www.superioressex.com/uploadedFiles/Distribution/North_America/Essex_Brownell/Downloads/Linecards_and_Catalogs/capacitors_w.pdf )

It appears that the component capacitors (there are 2) are not available as separate parts from Delta. They only reference the motor itself (part 220 in the diagrams listed below.)

http://www.ereplacementparts.com/delta-36650-type-table-saw-parts-c-3275_3334_13634.html

At this point, I would try to locate another saw of the same model and read any numbers that may appear on the original capacitors on the motor. Please note the location and connections of each. There should be a run cap and a start cap on the motor.

The differences between a 47uFD and 20uFD caps are not an issue in this application.

Dan

I would bet it's the Motor Brushes.They are locaded on the housing of the saw, accesed by unscrewing the plug.The brushes are replaceable and your saw will be fixed.Where to buy replacents could be an issue,Check manufacturer or search power tool replacement motor brushes.If stuck you can try to unscrew the plug the brush is at the bottom engaging the motor armerure,there shoud be a spring keeping contact.Inspect brush condition it looks like a carbon block worn to the curve of the motor.Go online do a search on how electric motors work you'll see exactly what I'm explaining.Cheap part easy fix.Good Luck.

The machine should have a data plate somewhere. This may give blade RPM or motor rpm, then its out witrh the calculator to work out the blade speed. The crucial number however is not the rpm but the peripheral speed in feet or meters per minute.
Used to work with a power tool manufacturer, a standard woodcutting chop saw will safely cut alloy. Two things, watch the blade type, and watch out for metal swarf entering the motor and switchgear !.