Milling spindles
HC, HCS
Bearing design
GMN high frequency spindles of the HC/HCS series utilize hybrid ball
bearings.
These bearings have standard steel bearing races and are matched
with silicon nitride balls. Advantages of hybrid bearings compared with normal
spindle bearings are improvement of:
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Reduced wear
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Rigidity
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Friction
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Axial movement
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Reliability of operation
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Vibrations
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Fatigue life
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Accuracy
Oil/air lubrication (Oil/air lubricators PRELUB)
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High reliability due to the separate lubrication supply to each bearing set,
and the required amount of lubricant (oil/air lubricator)
-
Ecologically compatible due to low oil consumption and dispensing with oil
mist
-
Prolonged bearing life and higher load capacity due to the use of additives
such as EP and HT
-
Large spectrum of applicable oils
Cooling system (Chillers)
Permanent grease lubrication
-
Low maintenance cost due to permanent grease lubrication
-
No environmental pollution by oils
-
High reliability due to air purge sealing
-
No lubricator required, therefore lower initial investment
Inverter
-
To fully utilize the high power density of the integral motors GMN can
provide the proper power supply, either open or closed-loop design
-
The drives will be programmed to match the spindle parameters tested and
comply to CE standards
Tool change
GMN can provide high frequency spindles to accept standard tooling
interfaces. The HSK style is
preferred for "HIGH SPEED and HIGH PRECISION" manufacturing.
Tooling is clamped via a high pressure spring pack and unclamping requires
hydraulic pressure.
The following methods are available for providing coolant through the spindle
shaft:
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