Selection of hook size according to load capacity

This table specifies the drive group as a function of hook strength class and the lifting capacity as a function of hook number.

Selection of hook size according to load capacity
Strength Grade Drive group Strength Grade
M ––––M3 / 1 BmM4 / 1 AmM5 / 2mM6 / 3mM7 / 4mM8 / 5m M
P –––M3 / 1 BmM4 / 1 AmM5 / 2mM6 / 3mM7 / 4mM8 / 5m– P
S ––M3 / 1 BmM4 / 1 AmM5 / 2mM6 / 3mM7 / 4mM8 / 5m–– S
T –M3 / 1 BmM4 / 1 AmM5 / 2mM6 / 3mM7 / 4m–––– T
V M3 / 1 BmM4 / 1 AmM5 / 2mM6 / 3mM7 / 4m––––– V
Hook No. Lifting Capacity (tons) Hook No.
1 543.22.521.61.2510.80.63 1
1.6 86.3543.22.521.61.251 1.6
2.5 12.51086.3543.22.521.6 2.5
4 201612.51086.3543.22.5 4
5 25201612.51086.3543.2 5
6 3225201612.51086.354 6
8 403225201612.51086.35 8
10 50403225201612.51086.3 10
12 6350403225201612.5108 12
16 806350403225201612.510 16
20 100806350403225201612.5 20
25 1251008063504032252016 25
32 16012510080635040322520 32
40 200160125100806350403225 40
50 2502001601251008063504032 50
63 32025020016012510080635040 63
80 400320250200160125100806350 80
100 5004003202502001601251008063 100
125 —50040032025020016012510080 125
160 ——500400320250200160125100 160
200 ———500400320250250160125 200
250 ————500400320250200160 250
Note: If working grade below M3 / 1 Bm, pls take it as M3 / 1 Bm into consideration. the table applies to both single and ramshorn type hooks.

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