Vacuum Grade Motors & Resolvers

Laboratory Grade Vacuum Products - add model prefix VX

The vacuum rating for this motors is 10^-7 Torr. The internal temperature rating is 180^o C internal and 155^o for the case. The bearing lubricant vapor pressure is below 10^-9 Torr at 100^o C. This motor is cleaned and baked, and undergoes a proprietary extraction process to remove contaminants. It should be handled under clean room conditions with nylon gloves.
VX grade is our premium product offering. It is typically used when even very small amounts of contamination are of concern to the customer. Some applications have been: space based optical systems, semiconductor manufacturing chambers and electron beam equipment.

Standard Grade Vacuum Products - add model prefix VS

These products have a vacuum rating of 10^-7 Torr and temperature rating of 155^o C internal and 130^o for the case. The bearing lubricant vapor pressure is below 10^-8 Torr at 100^o C. This motor is subjected to an industrial cleaning process, vacuum baked to encourage outgassing of residual contaminants and is sealed qin a nylon bag.
VS grade is our "standard" product offering. It is typically used when very clean is good enough. Often the VS grade is selected for vacuum chamber applications where the chamber will be opened frequently, the contamination from the outside air will normally exceed that of the VS grade equipment, so it is deemed suitable for the application.
NOTE: The Standard Grade has recently tested to exceed Class 10 clearn room requirements.

Commercial Grade Vacuum Products - add model prefix VC

The Commercial Grade had a vacuum rating of 10^-6 Torr. These motors are temperature rated at 130^o C internal, and 105^o for the case. The bearing lubricant vapor pressure is below 10^-6 Torr at 100^o C. This motor will give off a small quantity of vaporization products and no special handling is required.

Vacuum Rated Motors Have Been Successfully Installed At:

• U.C. Berkeley Space Sciences Lab: satellite testing
• U.C. Santa Cruz, Lick Observatory: telescope instruments
• Arnold A.F.B.: cryogenic motors and resolvers for test equipment
• Optical Coating Labs: space optics cleaner
• Boeing: air lock controls on space station
• Smithsonian Observatory: space based telescope equipment
• Stanford Linear Accelerator: beam line adjustments and experiments
• J.P.L./Hughes: Satellite testing facility
• Space Industries: Solar panel positioners on Wake Shield satellite
• European Space Agency: satellite based scintillator calibration
• CTA Space Systems: satellite inertial guidance adjustment
• NASA/Langley AFB: wind tunnel controls
• Argonne National Labs: servo systems for beam line