EN pg.14
Table 8-3 Top Hook & bottom Hook Dimensions (Inches)
Capacity
T/B
a
b
c
d
e
g
1000 Ton
T/B
1.14
.76
1.02
.76
1.09
0.87
2000 Ton
B
1.42
.94
1.25
.93
1.89
1.36
2000 Ton
T
1.31
.94
1.23
.92
1.56
1.26
These values are nominal since the dimension is not controlled to a tolerance. The “D” dimension
should be measured when the hook is new, this becomes a reference measurement. Subsequent
measurements are compared to this reference to make determinations about hook deformation/stretch.
Table 8-4 Chain Wear Dimensions
Standard Dimension
d
Ø 6.3
Limit Dimension
mm
Ø 5.7
Wear Standard Dimension
p
19.1
Wear Limit Dimension
mm
20
C. INSPECTION CLASSIFICATION:
The inspection procedure for hoist in regular service is divided into two general classifications based
upon the intervals at which inspection should be performed. The intervals in turn are dependent upon
the nature of the critical components of the hoist and the degree of their exposure to wear, deterioration
or malfunction. The two general classifications are designated as Frequent and Periodic, with respective
intervals between inspections as defined below.
