778322 COUPLING Centaflex Replacement Rubber Coupling 2019608 3633643
The numbers: 778322, 2019608, 3633643 are the serial number of the Centaflex CF-A series flexible rubber couplings.
When we are confirming the flexible rubber couplings, we CAN'T depend on the numbers 778322, 2019608, 3633643. If you count on these numbers, you may find the WRONG size which doesn't fit your machine.
How to confirm the CORRECT Centaflex CF-A series flexible rubber coupling? Here is the strategy that may help you. In just 2 steps, you can easily confirm the correct flexible rubber coupling.
Step 1: Confirm the hole type.
There are two kinds of hole types of this kind of coupling. Many people may not concern about it. Though it doesn't affect a lot (If you choose the wrong hole type, you can just change the coupling bolt/pin which uses with them. (We have another article talking about the coupling spline bolt and coupling pin
, you can have a check there.)
Below is the illustration of the coupling hole types
There are straight holes (A-type) and step holes (AS type)
A type coupling refers to CF-A-OS
AS type coupling refers to CF-A-O0
Step 2. Confirm the size.
In some cases, you can directly find the size number on the rubber. As you can see in the below picture, you can find the size number information beside the word "size''.
It's very easy to confirm the size if you have the size number on the rubber. But sometimes life is not easy. When a machine breaks down, the flexible rubber coupling may destroy or the information of the rubber is worn out that you can't with the size with the words on it.
In this case, the best solution is to find the dealer and send them the photos and dimensions of the coupling you have in your hand. They know which size it is with the flexible rubber coupling and confirm it for you.
Of course, if you don't mind, you can just throw the photos and dimensions of the coupling to a flexible rubber coupling supplier
, they will confirm all the information to you. You just drink your coffee and wait for them. :D