View Full Version : Kress Spindle speed fluctuatling randomly?
Millatime16
04-11-2023, 12:17 PM
My Kress spindle has started fluctuating speeds. The sound of the blade goes up and down occasionally. (doing it more and more)
Is this a brush issue with in the unit? or is it replacement time?
I'm not sure which model it is, but its in use a lot of the time. (its manual speed control, not controlled by Mach3)
32018
Voicecoil
05-11-2023, 06:42 PM
My Kress spindle has started fluctuating speeds. The sound of the blade goes up and down occasionally. (doing it more and more)
Is this a brush issue with in the unit? or is it replacement time?
I'm not sure which model it is, but its in use a lot of the time. (its manual speed control, not controlled by Mach3)
32018
I would suggest checking the brushes first, also take a look at the commutator to check for wear.
Millatime16
06-11-2023, 07:57 PM
I would suggest checking the brushes first, also take a look at the commutator to check for wear.
Thank you.
I bought new brushes and installed them (the old ones were only a 3rd of length left).
Sounds different and wavers a bit on start up.
Do they need a bedding in period?
I guess if it still plays up, its time for a new spindle. Seems the replacement is an AMB 800 FME-Q only available fir Germany.
They seem to have a hard wired lead though. Mine has a connected that goes back to the CNC brain (for stop start). It doesn;t control blade rotation speed though.
Voicecoil
07-11-2023, 05:42 PM
Thank you.
I bought new brushes and installed them (the old ones were only a 3rd of length left).
Sounds different and wavers a bit on start up.
Do they need a bedding in period?
They can do in order to make full contact with the commutator: the shape of the end of the brush doesn't always match it exactly particularly if old.
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