Nakanishi PLANET600 Series Operation Manual page 5

CAUTION
④ When cleaning the Air Turbine Spindle, stop the Air Turbine Spindle and remove
debris with a soft brush or a cloth. Do not blow air into the end of spindle area (refer
to section " 6 - 2 Outside View " ) with compressed air as foreign particles or grinding
debris may get into the ball bearing.
⑤ Always clean the shank of the grindstone before installing the grindstone into the
spindle.
⑥ When choosing the correct collet size to fit the shank of the grindstone, the collet size
tolerance of - 0 〜 +0.1mm maximum is strongly recommended. If the shank diameter
is any amount larger than the collet diameter, or, more than .1mm smaller than the
collet diameter, clamping will be improper and accuracy will be compromised.
⑦ Operating the Air Turbine Spindle with insufficient Oil Lubrication will cause low
rotational speed, damage to the internal components and shorter life of the Air Turbine
Spindle.
⑧ Be sure to drain moisture and condensation from the Air Line Kit (air filter bowl)
regularly to avoid moisture being carried to the Air Turbine Spindle. This may cause
damage to the Planet Air Turbine Spindle.
⑨ Check to make sure the Air Turbine Spindle Shank is properly and securely mounted
in the machine prior to use. If the Air Turbine Spindle is not properly aligned or there is
excessive play, do not use the Air Turbine Spindle until this situation is corrected.
⑩ Select suitable products or grindstones for all applications. Do not exceed the
capabilities of the Air Turbine Spindle or the grindstone.
⑪ Do not stop the Air Turbine Spindle while coolant spray is being applied to the
grindstone. Removing the air pressure from the Air Turbine Spindle causes a loss of
purging, allowing the Air Turbine Spindle to ingest coolant and debris. This will cause
damage to the Air Turbine Spindle.
⑫ Carefully direct coolant spray directly on the grindstone. Do not spray directly on the
Air Turbine Spindle body or the collet nut. Large amounts of coolant sprayed directly
on the Spindle end of the Air Turbine Spindle may cause excess load of the Spindle,
causing a loss of durability and longevity of the Air Turbine Spindle.
⑬ Stop the Air Turbine Spindle immediately when extreme rotation fluctuations or
unusual vibration is observed. Immediately, check the content of section
" 16. TROUBLESHOOTING ".
⑭ Always check if the grindstone, collet, collet nut, connection hose and supply / oil hose
for damaged before and after operating.
⑮ If the collet or collet nut show signs of wear or damage, replace them before a
malfunction or additional damage occurs.
⑯ After installation, repair, initial operation, or long periods of non operation, please refer
to section " 10. BREAK-IN PROCEDURE ". When checking the Air Turbine Spindle, no
vibration or unusual sound should be observed during rotation.
⑰ Do not disassemble, modify or attempt to repair the Air Turbine Spindle. Additional
damage will occur to the internal components. Service must be performed by NSK
NAKANISHI or an authorized service center.
⑱ When using this Air Turbine Spindle for mass production, please consider the purchase
of an additional Air Turbine Spindle to be used as a back-up in case of emergency.
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