Electric Chain Hoists (Single Brake)
Model NECH
PAGE: 35
NECH-0214
ACI Hoist & Crane | 2721 NE 4th Ave Pompano Beach, FL 33064| 954.367.6116
Visit WWW.ACIHOIST.COM for the most current information
Figure 6.4.1
Hook Dimension Reference
Table 6.4.1
Hook Dimensions
Capacity*
a*
b*
c*
d*
e*
g*
0.25 0.5
1.02
0.75
1.02
0.75
1.3
1.1
1
1.34
0.94
1.3
0.94
1.65
1.18
2
1.81
1.22
1.69
1.18
1.93
1.57
3
2.2
1.42
1.97
1.42
2.32
1.89
5
2.64
1.61
2.24
1.61
2.36
1.89
7.5
3.43
2.36
3.31
2.36
3.35
2.76
*Capacity in tons & measurements in inches
Figure 6.4.1
Hook Dimension Reference
Table 6.4.2
Hook Throat Opening and Hook Depth Dimensions
Capacity*
Dimension g*
Dimension c*
New
Hook
Replace
Hook
New
Hook
Replace
Hook
0.25 0.5
1.1
1.16
1.02
1.07
1
1.18
1.24
1.3
1.36
2
1.57
1.65
1.69
1.78
3
1.89
1.98
1.97
2.07
5
1.89
1.98
2.24
2.36
7.5
2.76
2.89
3.31
3.47
*Capacity in tons & measurements in inches
•
A bend or twist exceeding 10° from the plane of the unbent hook requires the replacement of the hook.
•
A hook latch, when required, that is missing shall be replaced
•
A hook latch, when required, that is inoperative shall be repaired or replaced.
•
Hooks having damage from chemicals, corrosion or deformation shall be repaired or replaced. Damage in the
form of cracks, nicks and gouges may be repaired by a designated person by grinding longitudinally, following
the contour of the hook, providing no dimension of the hook is reduced by more than 5% of the original
dimension of a new hook. If the repair reduces the dimension of the hook by more than 5% of the original
dimension of a new hook, the hook shall be replaced.
Never repair hooks by welding or reshaping. Heat applied to the hook will alter the original
heat treatment of the hook material and reduce the strength of the hook.
Any hook that requires replacement because of excessive bends, twists or throat opening
indicates abuse or overloading of the hoist therefore, other load supporting components of
the hoist should be inspected for possible damage when such conditions are found.
