THK KRF - Base Mounting Method

7-15
KRF
7. Installation and Operation
7.
Installation and Operation
7. Installation and Operation
7-5
Base mounting method
[Standard base (Tap hole specification)]
Note) Secure the actuator using all the mounting holes.
Note) Use the bolt with the most appropriate length. See Table 1 for details.
Fit length
Mounting surface
Bolts for securing base
Fig. 4 Drawing for mounting KRF3/4/5 tap specification
Fit length
Bolts for securing base
Mounting surface
Fig. 5 Drawing for mounting KRF6 Tap specification
Model number KRF3 KRF4 KRF5 KRF6
Screw size M3 M3 M4 M6
Material of screw Steel SUS Steel SUS Steel SUS Steel SUS
Tensile strength rank 10.9 A2-70 10.9 A2-70 10.9 A2-70 10.9 A2-70
Fit length of screw [mm] 4.5 4.5 6 6
Tightening
torque
[N·cm]
Material of
mounting
surface
Iron 130 100 130 100 310 230 860 770
Aluminum 125 100 125 100 250 230 660 660
Table 1 Tightening torque for mounting base (when using bottom surface tap)