Shown here with 4 arms & planets

[PL-481712U Technical Specifications]
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The PL-481712U Planetary System, 48 inch diameter, is a well proven design having been in constant use for well over 16 years. The gears are made from alternating materials of 304 SS and Vacuum heat-treated 17-4 for superior wear characteristics. Each planetary uses ceramic ball bearings with custom ball seperators and treated races. This gives the planetary superior life without the use of lubercants. The counter-rotating mask system works in conjuction with the ceramic bearings to give a tenth of 1% uniformity over the entire planet surface and from one planet to another. With the included heat shields the planetary will operate at up to 300˚ C. The planetary has a 3.75 inch hole through the center to provide for Chip Changer, Crystal Head & Temp Sensor to be centered in the system. Also included is a 1.0 inch ferrofluid feedthrough, drive gears, drive motor and motor controller.

This model includes:

• (8) Arms (with gear)
• (8) Planets (support substate holders up to 12 inches in diameter.)
• (1) Ring Gear (mounts under the Main Gear)

(shown is the 36" model, mounted on a test rig)

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