Ideal Steel Blocks
for
Manila Rope
Block Size
Diameter Rope
Sheave Size
Weight
Working Load Limit
O.D.
Rim Thickness
Center Pin Dia.
Single
Double
Triple
Single
Double
Triple
3"
3/8"
1-3/4"
1/2"
3/8"
1 lb.
1-1/2 lbs.
2 lbs.
300 lbs.
400 lbs.
600 lbs.
4"
1/2"
2-1/4"
5/8"
3/8"
2 lbs.
3 lbs.
3-1/2 lbs.
500 lbs.
600 lbs.
900 lbs.
5"
5/8"
3"
3/4"
3/8"
2-1/2 lbs.
3-1/2 lbs.
5 lbs.
700 lbs.
900 lbs.
1500 lbs.
6"
3/4"
3-1/2"
1"
1/2"
3-1/2 lbs.
5-1/2 lbs.
7 lbs.
1200 lbs.
1600 lbs.
2000 lbs.
8"
1"
4-3/4"
1-1/8"
5/8"
4-3/4 lbs.
11-1/2 lbs.
15 lbs.
1800 lbs.
2500 lbs.
3200 lbs.
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