Owner's manual

2. Installation
31
(2) Mounting method
x There is a set hole on the actuator base. Fix the actuator using this set hole.
x The belt cover can be removed using the hexagon wrench with the distance to the
opposite side of 2 mm.
x For the set bolt, use hexagon socket head cap screw with the intensity classification of
10.9 or more and fasten it with the attached special washer.
Caution: Make sure to use the attached special washer. If the actuator is mounted
without using this washer, the bolt might be loosened due to the buckling on
the bolt-seated surface.
x Use a hex socket head cap screw for the attachment to the base.
x It is recommended to use high-tensile bolts with ISO-10.9 or more.
x Make sure to have the effective length of screw engagement described below or more for
the tightening of a bolt and a female screw.
x When female screw is on steel ĺ thread length same as nominal diameter
x When female screw is on aluminum ĺ thread length 2 times longer than nominal
diameter
x When using a bolt sized M8 or more and the seat for the bolt is made of aluminum, apply a
washer dedicated for high-tensile bolts (otherwise the bolt seat may sink). It is not
necessary if the bolt is M6 or smaller. Please do not apply a standard spring lock washer.
The recommended screw torque is given below.
Tightening Torque
Screw
nominal
diameter
In the case that steel is used for
the bolt seating surface:
In the case that aluminum is
used for the bolt seating surface:
M5 7.5N·m (0.77kgf·m) 4.3N·m (0.44kgf·m)
M6 12.9N·m (1.32kgf·m) 6.7N·m (0.68kgf·m)
M8 31.3N·m (3.19kgf·m) 14N·m (1.43kgf·m)
Model A B C Mounting screw
S Type 50mm 7 5mm M6
M Type 70mm 9 6mm M8