McLane Research Laboratories Mark 78H-21, Руководство пользователя

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Drive Motor
The drive motor assembly contains the following:
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A high-torque electronic stepping motor
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A reducing gear train
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A microswitch/cam device
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A titanium main drive shaft
The motor’s main drive shaft generates 30 kg/cm torque at the spur gear. A switch and cam
assembly in the stepper motor confirms proper alignment of each bottle. The firmware also records
the time and fill position when each bottle advances.
The motor housing interior is filled with 450 ml of silicone fluid (a quad-ring around the main drive
shaft securely separates the silicone fluid from seawater). A bladder of flexible, impermeable
Nitrile allows compression of the silicone fluid to compensate for external static pressure. At l,000
atm, the fluid compresses to 92% of its volume compared at one atmosphere. All interior motor
housing shafts are supported by high precision ball bearings.
Figure 1-15: Drive Motor Housing