VSS Stepper Motor0 pages

EXTREME

ENG www.phytron.eu/vss

VSS Stepper Motor
For Applications up to Ultra-high-vacuum
Motors for use in vacuum should not only
withstand the vacuum (no bursting of air
inclusions), they must not contaminate the
vacuum either. By selecting suitable materials and optimised conditioning processes
phytron VSS stepper motors are ideally suited
for use in a vacuum. Through many years of
experience with special materials for use in
Space, we have put a focus on materials with
minimal molecular outgassing and high heat
resistance. This is the prerequisite for a high
vacuum quality and genuine measurement
results in scientific and medical applications.
For exact positioning in vacuum, stepper motors are therefore particularly suitable because they can precisely position even without
sensitive feedback providers. Therefore

RoHS
complient
In Focus

phytron VSS stepper motors can be used in
particularly challenging environmental conditions (radiation, cryo-temperatures and in a
modified design even in Space).
Since stepper motors do not generate
jitter effects while holding a position, this
technology is ideal for precisely aligning
optical instruments, mirrors, antennas or
samples e.g. in high-resolution microscopes,
particle accelerators or molecular analysis
devices.
The VSS series is completely manufactured
in Germany. You have special requirements?
We are pleased to develope a tailored design
for your application.

Highlights

High Temperature

Vacuum

Radiation Resistance

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2-phase stepper motors
Holding torques from 3.4 mNm to 13 Nm
Diameters from 19 to 125 mm
Number of steps 200 (standard)
Step accuracy 5% for 1.8°
Operating voltage (power stage)
Size 19 to 57: 70 VDC
Size 80 to 126: 120 VDC
• Protection class IP 20
• Standard connection: 4-lead parallel
(option: series or 8-lead)
• Outgassing holes to avoid pockets of
trapped gas

Performance & Lifetime

Options

phytron in-Vacuum motors are based on a technology that can also be
found in the most challenging projects of our time. From a variety of satellites up to the Mars rover Curiosity: phytron motors drive applications
in distant worlds - highly accurate, reliable and durable. Driven within
their specification range, high quality components and a proven design
make sure: These motors don’t let you down!

• VGPL precision planetary gear or
Harmonic Drive gear
• Thermocouple type KTC/ Pt100 resistor sensor
• Resolver
• Double shaft

Cleanliness
phytron motors for use in ultra high vacuum (UHV) contain only materials that also meet the requirements of the ECSS (European Space regulations). Thus, each material has a maximum TML (Total Mass Loss)
value < 1% and a maximum CVCM (Volatile Mass Losses) value < 0.1 %.
You will receive your UHV motor, double-wrapped and vacuum sealed.

Customised solutions
• Operating in an agressive environment
• Clean room applications to clean room
class ISO 5 (acc. to ISO 14644-1)
• Motors with spindle

Edition 2015 April
Extreme. Precision. Positioning.