Linear Drives - VG Scienta

Linear
Drives
Linear Drives
Introduction to Linear Drives
• Wide range of travels as standard
• Fully bakeable to 250 ºC as standard (400 ºC
if dismantled)
• Different versions allow greater flexibility
• Interchangeable between versions
• 1x10 -11 mbar to 1 bar pressure range
• Motorised types
• Micrometer types
• Pneumatic types
• Push/pull types
• Manual screw types
There are many requirements to linearly move
items inside vacuum. This movement is normally
small in distance and can be of high or
low accuracy. It can range from the opening and
closing of a shutter to moving electron optics
nearer to a loaded sample.
VG Scienta has a wide range of products
designed to overcome the problems associated
with such simple translations.
The devices in the LD series consist of a linear
motion probe that can be moved in relation
to its mounting flange from 25 mm to 150
mm with a smooth and reliable operation. The
method of actuation used differs between the
three ranges, each allows different accuracies
and speeds of movement to be achieved. Edge
welded high quality UHV bellows are used in the
construction of the drives.
There is a choice of either light or heavy duty
probe mounts across the LD linear drive series
which is determined by the choice of mounting
flange, either 34 mm or 70 mm Conflat. All of
the versions are bakeable up to 250 ºC as standard,
but can be baked to a maximum of 400 ºC
if further dismantling is undertaken.
In addition, VG Scienta supply a range of other
linear drive components for more specialist
applications. These include longer precision
linear travels, or the capability of moving large
diameter objects into a vacuum chamber. These
devices are also described in this section.
244 www.vgscienta.com