Servo drill press help – Motor Fault

[Chris Cartwright 1Participant @chriscartwright1]

Hi

Does anyone know of someone in the UK who can repair a servo precision collet drill press?

Thanks, Chris.

[Chris Cartwright 1Participant @chriscartwright1]

[not done it yetParticipant @notdoneityet]

Tell us a bit more about the fault. Electrical, mechanical, motor, run out, bearings broken housing, etc? Just plain worn out?

[Chris Cartwright 1Participant @chriscartwright1]

Hi

I think it's a wiring short. It blows the circuit breaker (and internal trip on the top) every time I turn it on. Accompanied by a crack and ozone smell from somewhere around the motor.

I've tried to dismantle it to check the wiring, but can't get the stator out since the wires attached to it are too short to clear the housing. Can't access the wiring from below. No obvious burnout on rotor or stator. Brushes fine.

Thanks, Chris.

[Michael GilliganParticipant @michaelgilligan61133]

Is this any help, Chris ?

**LINK**

http://servoproductsco.com/specs/dp_head_parts_list___drawing_4_pages.pdf

MichaelG.

[Chris Cartwright 1Participant @chriscartwright1]

Hi Michael,

Seen that

That got me as far as I've got in dismantling, but doesn't show the wiring harness that stops the stator coming out!

Thanks anyway

[Michael GilliganParticipant @michaelgilligan61133]

You will obviously know better than me, Chris; but it looks like there is a 'plug & socket' arrangement inboard of the Speed Control unit.

MichaelG.

[HughEParticipant @hughe]

Hi Chris,

Had a similar fault (smell and noise) on a precision drill press. The brushes were OK. It turned out to be a build up of carbon around the commutator. It took a lot of cleaning to clear the fault. I suspect the brushes had been replaced just before I acquired it. Sorry can't help you with gaining access to the stator.

Good luck Hugh

[Chris Cartwright 1Participant @chriscartwright1]

Good spot Michael – thanks.

Will try going in through the speed control and see if that helps.

Cheers, Chris.

[John ReeseParticipant @johnreese12848]

Try isolating the motor and powering it without the switch and controller in the system. If the motor runs you know the problem is in the controls. If it doesn't you know it is the motor.

[Chris Cartwright 1Participant @chriscartwright1]

Thank you all for your suggestions.

I've found out that Bridgeport (who distribute them in the UK) will take a look for me, so I'm going that route.

Cheers, Chris.

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