The variable pitch pulley is of the type having two opposed flanges (1,2) defining a groove (3) with inclined sides for receiving a V-belt. A flange (1) has an axial hub (4) provided with external thread (5) intended to receive the other flange (2) through an axial center (14) bore provided with internal thread (15). At least one of these threads (5, 15) is provided on two separate pieces (2, 6), thereby forming a small axial gap (13) there between and forcing means (9, 17) are provided for forcing said two pieces (2, 6) once said other flange (2) has been screwed on the first flange (1) in the axial desired position, which axially act on said threads (5, 15) so as to lock the two flanges (1, 2) in their desired mutual position, both under tension and under push forces.
PCD means Pitch Circle Diameter
`i think flange is what you need son
PCD (Pitch Circle Diameter) is the diameter of a circle that goes through each of the bolt holes. You can find it by measuring distance from centre of one bolt hole to the centre of opposite end bolt hole...
Circumference is the distance around a circle (closed curve) which in this case would be the flange's circumference. A circumference is calculated by using the mathematical constant of Pi (3.143). It entails multiplying the outside diameter by 3.143.Example: Diameter = 145mm145 multiplied by 3.143 equals 455.735mm
The term"counter flange" is used in Europe to refer to a mating flange to make up a flange pair. For example a "counter flange" attached to a pipe must have the same bolt circle diameter, number of bolts, and size of bolts and pressure rating at the equipment nozzle flange provided by an equipment manufacturer.
What is difference between ASME B16 & ASME B16.5 Flange
What is the difference between a Cast Hoop and Triple Flange hoop?
Schedule 160 is thicker than 80
They are made differently and forged flanges are stronger than plate flanges.
http://www.tubecraftflange.com/products/slipon.htmTubeSlip-On Flanges are probably the most common type of flanges in the industry and are ideal for lower pressure applications. You do not have to specify the pipe schedule when using slip-on flanges due to the fact that its inside diameter is determined by the outside diameter of the pipe. This outside diameter of the pipe does not change for the different schedules. This often makes these easier to stock for vendors. Fabricators also like the fact that these flanges are slightly easier to align than weld neck flanges. They also are slightly easier to cut pipe to the proper length for. They can be used for high temperature and pressure applications but are not generally recommended as compared to other types of flanges. ASME B16.5 Code limits their usage in the 1500#-2500# (lbs.) weight classes.
get an "ID" (that is Inside Diameter) pipe wrench. they are available at most good hardware stores. this will allow you to turn the flange from the inside.
A box end wrench if you can slip it over the end and down to the flange. Hold it down on the flange and gently tap the wrench with a hammer working around the circle of the line until it bottoms out.