Nakanishi iSpeed3 Operation Manual page 36

CAUTION
Do not allow set screws to come
directly in contact with the spindle
body as shown in Fig. 38, as this
will result in damage to the spindle
housing and internal components.
When installing, never clamp directly
over the bearings, as this will result in
bearing damage (Refer to Fig. 39).
78
Deformation
Damage of Internal
Components
Fastening Bolt
Bearing
Fig. 39
Fastening Bolt