14
During maintenance work the condition of the load hook (wear and centre punch spacing), the rubber buffer, the
pressure bearing, the safety latch and the pin, which secures the hook nut, have to be checked. If required, the axial
bearing has to be cleaned and greased. The plastic cover of the hook tackles of chains 4×12 mm, 5×15 mm and
5.2×15 mm has to be checked additionally and changed if worn.
For the assembly of the hook tackles please tighten the connection screws with the following torque:
Max. S.W.L. [kg] Dimension of screws Quantity
Tightening torque [Nm]
hook tackle for chain 4×12 mm
250
-
-
-
hook tackle for chain 5×15 mm
500
-
-
-
hook tackle for chain 5.2×15 mm
500
-
-
-
hook tackle for chain 7×22 mm
1000
M10×40 DIN 912
2
35
hook tackle for chain 7.2×21 mm
1250
M10×40 DIN 912
2
35
Table 1: Tightening torques of screw connections
3.1.2
Hook block
The hook block is used to attach the load in double fall version.
Casing
Radial ball bearing
Load hook complete
(incl. pressure bearing and
hook nut)
Rubber buffer
Sprocket wheel
Screws complete with self-locking
nuts and tooth washers
Figure 7: Details of the hook block
During maintenance work the condition of the load hook (wear and centre punch spacing), the rubber buffer, the
pressure bearing, the safety latch and the pin, which secures the hook nut, have to be checked.
During assembly of the hook blocks the connection screws should be tightened with the following torque:
Max. S.W.L. [kg] Dimension of screws Quantity
bottom/top
Tightening torque [Nm]
bottom/top
Hook block of chain 4×12 mm
500
M6×40 DIN 912
2/1
10/6
Hook block of chain 5×15 mm
1000
M6×40 DIN 912
2/1
10/6
Hook block of chain 5.2×15 mm
1000
M6×40 DIN 912
2/1
10/6
Hook block of chain 7×22 mm
2000
M8×50 DIN 912
2/1
20/10
Hook block of chain 7.2×21 mm
2500
M8×50 DIN 912
2/1
20/10
Table 2: Tightening torques of screw connections
Summary of Contents for STAGEKET
Page 55: ...55 13 Example of Declaration of Conformity...
Page 56: ...56 14 Example of Declaration of Incorporation...
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