USEFUL INFORMATION
CALCULATION OF DRUM CAPACITIES

CAPACITIES IN FEET OF ROPE (A + B) ACM

Example
How much 1/4″ diameter rope can be spooled on a drum having a 36″ diameter flange, 24″ diameter drum and 30″ width between flanges?

Using the above formula the number of feet equals (6 + 24) x 6 x 30 x .152 Answer — 821 feet. The value of “M” is taken from the previously calculated table of values shown below. For 1/4″ diameter this value “M” is .152

Values for M

Size Rope Inches M Size Rope Inches M Size Rope Inches M
1/4 3.29 7/8 .308 1 3/4 .0770
3/8 1.58 1 .239 1 7/8 .0675
7/16 1.19 1 1/8 .191 2 .0597
1/2 .925 1 1/4 .152 2 1/8 .0532
3/16 .741 1 3/8 .127 2 1/4 .0476
5/8 .607 1 1/2 .107 2 3/8 .0419
3/4 .428 1 5/8 .0886 2 1/2 .0380

 

Print Friendly, PDF & Email