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CAUTION
Do not allow set screws to come directly in contact
with the Brushless Motor Spindle body as shown
in Fig. 17, as this will result in damage to the
Brushless Motor Spindle housing and internal
components.
When installing, never clamp directly over the
bearings, as this will result in bearing damage
(Refer to Fig. 18).
③ How to fabricate the Split Type Holder
(1) Rough bore the inside diameter of the Split
Type Holder.
(2) Cut a slit. (Ex. Slit 2mm) wide.
(3) Tighten the Screw for Removal and Force
Open the Slit Area.
(4) Insert a spacer (Ex. thickness = 2mm)
into the Slit Area.
(5) Loosen the Screw for Removal, and tighten
the fastening bolt with its speci¿ed torque.
(6) Finish the Split Type Holder so that the inside
diameter of the Split Type Holder is
its tolerance range from - 0.01mm to
- 0.015mm, and its roundness and cylindricity
of less than 5 m.
(7) When inserting the Brushless Motor Spindle
loosen the Fastening Bolt, and tighten the
Screw for Removal, widening the Slit Area.
CAUTION
・ How to con¿rm the correct tightening or clamping of the Brushless Motor Spindles in the holder
Measure the current value of the CONTROLLER's power cord by the clamp meter.
Fasten the holder so that the increase in the no-load current value (during rotation at the maximum
rotation speed) with the Brushless Motor Spindle fastened is 20mA (for type 120V) / 10mA (for
type 200V / 230V) or less, compared to the no-load current value (during rotation at the maximum
rotation speed) without fastening the Brushless Motor Spindle. Do not over-tighten the Fastening
Bolt. It may damage Brushless Motor Spindle's precision and shorten the life of the bearings.
・ The ¿nal responsibility for ensuring holderʼs safety for use in a given application is left to the
designer of the equipment in which NAKANISHI's Brushless Motor Spindle is installed.
NAKANISHI offers Brushless Motor Spindle with a wide variety of capabilities and speci¿cations.
Please carefully check the Brushless Motor Spindle's speci¿cations against the requirements of
your equipment and verify suitability and safety of the Holder prior to initial use.
Fastening Bolt
30 with
Front View
Deformation
Damage of internal
Components
Fastenig Bolt
Fig. 18
Screw for Removal
Fastening Bolt
Spacer
Slit
Spacer
Side View
Fig. 19
Bearing
Screw for Removal
Fastening Bolt
Spacer
9
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