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Precision

Features
  • High decoupling force
  • Vertical or horizontal operation
  • Tight compliance and accuracy
  • Independent rotary action
  • All metal internal construction
  • Bakeable to 250ºC
  • Production environment reliability
  • Heavier loads than other magnetic transporters
  • 12, 24,36, 48 and 60 inch linear travel
  • Low droop
  • Del-Seal™ CF port mounts
  • All manipulators have 2-3/4" Del-Seal™ CF flanges, 2.73" diameter, nonrotatable with clearance holes.
  • Shown with actuator housing and shaft extended by 2 inches.
  • Covered by U.S. patent number 5,105,932


Description
The High Decoupling Magnetic Transporters handle more axial force and torque and exhibit better compliance and load carrying capability than typically expected from a magnetically-coupled feedthrough. This increase in force and torque results in greater tactile feedback, lower backlash, and greater ability to overcome friction. Modern rare earth magnets and some highly evolved CAD programs are used to achieve this unusually high performance.

Independence of linear and rotational motion is the key to versatility in these systems. The round rotary shaft is contained within the outer square linear motion shaft and rotation is completely independent of it. Thus, rotary motion and linear motion can be used in combination or separately, providing numerous potential combinations of sample movement. Examples include locking devices for sample transfer, various clamping devices, vertical lift & deliver mechanisms, and custom rotatable stages.

The precision magnetic transporters are manufactured as linearonly and linear/rotary models. All models use UHV all-metal internal construction.

Model PMTLRP uses polymeric bearings outside the vacuum, and as a result, have a slightly higher stiction than the metal bearing units. They are intended for sample transferring and similar functions, where the slight amount of stiction is acceptable or desirable. This construction is a more economical design than the external metal bearing units.

Models PMTLOM and PMTLRM use all metal construction throughout, and as a result, have very low stiction. These models are intended for transporter applications where very good tactical feedback is desired or for high duty cycle applications.

 Specifications
 Material
  Flange and outer tube 304ss
  0.75-in square main shaft  304ss
  0.25-in diameter rotation shaft  304ss
  Actuator housing  Anodized aluminum
  Bearings Dry film lubricated  440C ss
 Vacuum Range  1x10-11 Torr
 Temperature Range * 250ºC
 Decoupling Axial load  26 pounds max.
 Linear Compliance  0.0035-inch per lb
 Decoupling Torque  12 lb-in max
 Rotary Compliance  2-degrees per lb-in
 Lateral load / sample mass ** 15 lb max
*   30ºC maximum with magnets or motorized.
** Dependent upon travel and configuration
For conversion tables click here

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