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Posted
On ‎4‎/‎22‎/‎2019 at 8:32 AM, dikman said:

Sounds like the little motor could be a no-go. This is what I meant by a top-mount servo.

 

111W117 motor1a.jpg

Hello Dikmann. Can you provide me with what kind of servomotor, you have got here. I like to look into the specifications/manual. I am interested in the shaft power of the motor and the weight of the motor.

I do know something about electromechanics, and I do wonder about why these servo motors for sewing machines are that big. My guess is, that this servomotor could have an input max power of 550 W but an output max shaft power (continous) of about 300 W. And the motor weight is  5 kg?

For general industrial servomotors like I link to below. you can get a motor with 200 W continous output power and 600 W peak power with a weight of 0.86 kg. However I think the shaft RPM is high.

http://www.allaboutmotion.com/wp-content/uploads/2013/12/Parker-Aries-Brochure.pdf
 

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Posted

I'm on holidays at the moment so not home. I can tell you that the servo is a fairly generic one that I bought off ebay, the vendor was here in Australia so I didn't have to buy from overseas. It's rated at "550w" but as you know that can mean anything! It's perfectly adequate for the machine it's on and can punch through 1/2" of veg with no problems.

Machines wot I have - Singer 51W59; Singer 331K4; Seiko STH-8BLD; Pfaff 335; CB4500.

Chinese shoe patcher; Singer 201K (old hand crank)

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