 ...In
describing wire rope it's necessary to talk about wire rope construction.
There are many different types of wire rope construction to do many
different jobs. To make easier to identify the different types of wire
rope they are separated into "classes" by the manufacturer.
Each class may have many different types of construction. For example.
Ford could be considered a "class" of car, and Pinto, Maverick,
LTD, etc.could be considered a "type" of Ford car. By the
same token, 6 X 19 Class wire rope has eight or more types of construction
within that 6 X 19 class. Therefore, it is recommended that a
certain type of construction be ordered instead of Class, even though
the manufacturers of wire rope ask that the wire rope be ordered by
class, always order the exact wire rope as needed for your application.
Before we go into the wire ropes used on a crane, we should know what
the numbers mean in, say, a 6 X 25 wire rope. The first number "6"
means that the are are 6 strands or larger wires making up the wire
rope and the second number "25" means that there are 25 smaller
wires laid around each other to make up each strand. There are other
wires in some wire ropes that should be mentioned. These are called
"filler wires", they help. 19 minutes. |
