Jump to content

Recommended Posts

  • Members
Posted (edited)

Hi, I'm going to be picking up a v-belt for an industrial cylinder arm machine with a servo that has a small pulley (50mm) installed. I have the motor mounted and sitting in what looks to be the perfect angle (the relationship between the foot pedal and servo arm linkage). When I put a flexible measuring tape around both pulleys (not down in the grooves) I get 52"... when I fit a length of twine around and "into" both pulleys, I get 49". I know there is plenty of adjustment to the motor but since these belts are readily available in all sizes [48,49,50,51,52,etc], and I like where everything is sitting now, which length would you get? I'm thinking 50" would be the best - but I'm not sure if the stated belt sizes are measured around the outside or inside? They look to be about 1/4" thick. thanks.

Edited by CustomDoug

Does Anyone Know Where the Love of God Goes When the Waves Turn Minutes to Hours?

  • Ambassador
Posted

Pully 1 diameter x PI (3.14)/2

Pully 2 diameter x PI (3.14)/2

Plus length of pully 1 center to center of pully 2 multiply x 2.

Add it all together is your length.

Shawn Zoladz (The Major)

dba Major Productions

Everything Leather

Saddles and Shoes Excluded

You can lead me. You can follow me. Or you can get the hell out of my way.

-Gen. Geo. S. Patton

  • Members
Posted

Pully 1 diameter x PI (3.14)/2

Pully 2 diameter x PI (3.14)/2

Plus length of pully 1 center to center of pully 2 multiply x 2.

Add it all together is your length.

Wow, the scientific method ! ; ) That's good info. Sounds like the 52" (flexible tape wrapped around the top of both pulley's) was the correct number... and that those belts are measured around the outside diameter. Thanks.

Does Anyone Know Where the Love of God Goes When the Waves Turn Minutes to Hours?

  • Members
Posted

The cross-sectional thickness of the belt determines the flat layout dimension that will fit over a given configuration.

Here is a site that has a calculator on-line.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...