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(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 specified (recommended) torque.
⑥ Finish the Split Type Holder so that the inside diameter of the Split Type Holder is φ40 with its tolerance
range from - 0.01mm to - 0.015mm, and its roundness and cylindricity of less than 5µm.
⑦ When inserting the Brushless Motor Spindle loosen the Fastening Bolt, and tighten the Screw for Removal,
widening the Slit Area.
CAUTION
・ How to confirm the correct tightening or clamping of the Brushless Motor Spindles in the holder.
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 50mA (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 final 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 specifications.
Please carefully check the Brushless Motor Spindle's specifications against the requirements of
your equipment and verify suitability and safety of the Holder prior to initial use.
36
Fastening Bolt
Slit
Spacer
Front View
Screw for Removal
Fastening Bolt
Spacer
Side View
Fig. 28
Screw for Removal
Fastening Bolt
Spacer
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