Key stock

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Geochurchi
Posts: 30
Joined: Mon Feb 22, 2021 7:49 am

Key stock

Post by Geochurchi » Sat Jul 31, 2021 7:13 am

Hi, how do I determine the correct length of a key on a shaft?
Geo 🇺🇸

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Bill Shields
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Re: Key stock

Post by Bill Shields » Sat Jul 31, 2021 7:38 am

If there are two grooves existing...like a pulley on a shaft...then the key should fill both. Key should be tight on the sides with a little clearance top and bottom to ensure things do not jam up during assembly

If you are starting from scratch designing and keying two components together...the first thing you need to know is how much maximum torque you need to transmit...and if it is a steady or reciprocating load / fluctuating value.

You also need to know the od of the shaft being keyed.

Do you have this information?
Too many things going on to bother listing them.

Geochurchi
Posts: 30
Joined: Mon Feb 22, 2021 7:49 am

Re: Key stock

Post by Geochurchi » Sat Jul 31, 2021 7:46 am

Thanks, it’s an existing pump.
Geo 🇺🇸

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