Nashua, NH July 16, 2001
The new FerroDrive range of motorized spindles from Ferrotec combines
a hermetic Ferrofluidic® vacuum feedthrough with a high precision
motor and controller. This results in a compact and high performance
integrated sealing and rotation system. Supplied ready to install, a
FerroDrive simplifies engineering and saves time and effort in choosing
and integrating components. FerroDrives are ideal for applications such
as thin film, optical coating, ion beam deposition, PVD, sputtering
and ion implantation.
Two different versions are available - a basic motorized spindle which
uses a standard controller and Hall effect sensors for simple velocity
control (within 2%), and a high precision version which features an
encoder and advanced digital controller for extremely accurate speed
and position control (within 0.01% or better). Shaft sizes of up to
2" (hollow or solid) are offered as standard products.
The FerroDrive is designed throughout for optimum performance and long
lifetime. The spindle is driven by a brushless DC motor. This permits
100% torque transmission with zero backlash through the feedthrough
shaft and eliminates the need for gears, belts, or other mechanical
couplings. High precision bearings offer high rotational speed, small
shaft displacement, and low shaft run-out, and the optional encoder
provides exceptional speed and position control.
The cantilevered seal design, stainless steel construction and water
cooling minimize outgassing. A rotatable mounting flange allows flexible
mounting configurations and simplifies installation.
In addition to the standard FerroDrive products, custom designs are
also available. These may include features such as large diameters (up
to 6"), shaft modifications, water cooled motors and various positioning
options including higher resolution encoders and other types of positioning
and control devices such as limit switches.