View Full Version : Pcd

6th Nov 2006, 12:32 pm
General question if someone would be so kind to answer the drawing says dia 36 PCD can someone explain what PCD stands for?

6th Nov 2006, 12:35 pm
In what context? :huh:

6th Nov 2006, 12:48 pm
Its an engineering drawing and has an array of circles around 1 circle I understand the PCD means an array (i think) I just wanted to know what PCD stood for.

6th Nov 2006, 12:53 pm
Pitch Circle Diameter

The diameter that the array of holes is centred on.

6th Nov 2006, 12:54 pm
The best TLA-annihilator known to man ;)

6th Nov 2006, 01:04 pm
as already stated the PCD is the pitch cicle diameter and refers to the size of the circle that the holes (or what ever) are arrayed around normally the text would specify how many holes what diameter they are and what the pcd is, ie 6 off dia 10mm holes equispaced on a PCD of 200mm.

6th Nov 2006, 01:12 pm
Thanks to everyone who answered.
Yedan very easy to follow answer thank you.
Great link Tuoni Ill be using that site:)

6th Nov 2006, 01:24 pm
Great link Tuoni Ill be using that site:)

You're quite welcome :)