Yamaha 3-axis model Hexagon socket head cap screw M8 Strength 8.8T, Recommended nominal length

		Chapter 9 MXYX
1	Installation
	WARNING
	Always turn the controller power OFF before installing the robot. Serious
	accidents might occur if the robot starts to operate during installation.
	Install the MXYX by tapping holes into the installation base and securing the
	robot to the base with M8 bolts from the inside of the robot.
1-1	Installation bolt types
	• Use the following type of installation bolt.
	Hexagon socket head cap screw M8 Strength 8.8T

1-2 Installation bolt nominal length

!CAUTION

Do not use washers or spring washers with the tightening bolt.

The bolt head could interfere with the linear guide’s bearings and be damaged.

If the installation base is made of steel, secure 1D or more (8mm or more for M8) for the screw fitting length. When made of aluminum, secure 1.5D or more (12mm or more for M8).

The frame thickness is 26.5mm. (Refer to Fig. 9-1.)

Recommended nominal length
When installation base is made of steel	35mm or more
When installation base is made of aluminum	40mm or more

26.5

Fig. 9-1

1-3 Tightening torque

•The accurate tightening torque will differ according to the seating face fric- tional coefficient and the female screw material, etc. The following tightening

torque is recommended as a guide.

Recommended torque 22.5N·m to 36.3N·m (230kgf·cm to 370kgf·cm)

9-1