4
9. To install a screw shaft or cover to the base, avoid drilling large holes so as not to reduce the surface
area of contact between the jack and the base.
10. See table 1 for bolt sizes to fasten the jack. Strength class 8.8 or above bolts are usually used for
mounting. Use 10.9 or above when load applies directly to the mounting bolts as in Fig.2.
Table 1. Bolt Sizes
11. Attach shaft end by applying an adhesive agent to its set screw. it is possible for the shaft end to
become detached by the rotational torque applied to the shaft. To avoid this, use one of the following
adhesives:
Provide a locking mechanism to the shaft end when an end fitting is attached . The screw shaft
receives a rotational torque and cause the end fitting to drop. Follow the instructions below to avoid
drop of the end fitting.
1) Apply an adhesive agent. Use the following brands or their equivalent. Read instructions and
safety precautions provided with each product before applying.
2)
After tightening the end fitting, fix with the attached set screw (cone point or cut point) as a
locking device.
For set screw sizes, refer to the end fitting configuration (dimensional drawing).
3) In atmospheres with a lot of vibration or temperatures higher than the operating temperature
range use dowel pins instead of set screws.
12. The jack’s thrusting force may cause the screw shaft (nut in the case of travel nut type) to rotate, in
which case a rotation prevention is required. When operating with the shaft end unconnected or
pulling the rope, use the rotation prevention type.
13. Do not use mechanical stops. This will cause major internal damage.
14. Apply load in the same direction as that of the screw shaft.
Load from inappropriate angles can bend the shaft (Fig.3).
For side load, make sure to use guides so the load or bending
momentum do not apply directly to the jack.
15. Be certain that the jack rating exceed the maximum possible stroke.
If the stroke capacity is exceeded, the shaft may disengage from the
unit or fail to function.
16. Consider maximum possible inertia before setting the limit switch.
This means calculating the maximum coasting distance affected
Frame No.
Mounting
hole
Bolt Size
002
4
－
φ
7
M6
005
4
－
φ
7
M6
010
4
－
φ
9
M8
025
4
－
φ
11
M10
050
4
－
φ
18
M16
100
4
－
φ
22
M20
150
4
－
φ
22
M20
200
4
－
φ
26
M24
300
4
－
φ
33
M30
500
4
－
φ
42
M39
Maker
Brand
Nihon Lock Tight
#262, 271
Three Bond
#1307N
Table 2. Tightening Agent
Mounting bolt
Fig.2
Fig.3
W
W
