Author Topic: Servo output shaft strength  (Read 3103 times)

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Offline SpecterTopic starter

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Servo output shaft strength
« on: October 06, 2008, 01:52:13 PM »
If a servo is being used as a knee joint, aside from mechanical failure how can i find out how much weight can be held by the shaft at a perpendicular angle with out jamming up the servo.

Right now I'm planning on using HS-5475HB from Hi-tech, but I haven't been able to find any info in the specs about the shaft strength.

Also, does the stall torque also mean it can sustain holding that much weight with out loosing position?

Great site BTW, thanks in advance for your responses.
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Offline pomprocker

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Re: Servo output shaft strength
« Reply #1 on: October 06, 2008, 04:11:18 PM »
Check the data sheet of your servo and use the RMF calculator

http://www.societyofrobots.com/calculator.shtml
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Offline Admin

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Re: Servo output shaft strength
« Reply #2 on: October 08, 2008, 05:21:38 AM »
Spector, there isn't really any way to know until trying. Servo datasheets are fairly limited and don't say much. I've had servos break even before ever reaching the maximum listed torque. Every servo type acts differently. I honestly wish servo manufacturers would do better with documentation.

Holding a servo at stall torque is bad . . . the motor/electronics will overheat.
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