Rotating Platforms - RP Series

Introduction to Rotating Platforms

Stable and repeatable 360 ^oC continuous rotation
Precision ball bearings and quality PTFE seals
Two stage differential pumping for UHV performance
Provides eucentric rotation for sample manipulation
Good rotation resolution
Low torque to rotate
Stainless steel construction
Adaptor flange needed for manipulators with tapped flanges
Easy to use with wormwheel and motorised versions available
Four drive options:

C - Coarse version (manual, no gearing)

H - High precision - worm and wormwheel

M - Motorised - stepper motor

D - DC motorisation

This device allows UHV equipment to be rotated about the flange axis for concentric polar rotation (eucentric motion about the flange axis). Applications include sample imaging (XPS, AES or SIMS), structural or ion/neutral/atom scattering experiments.

The RP100 provides primary rotation for other components in mix and match applications. Used in pairs, the rotating platform makes an ideal seal for rotation of UHV chambers, for example around the incoming beam of a synchotron experiment.

Specifications for Rotating Platform
Bore	102.5 mm (4.03”)
Flanges	152 FC (6”), both with tapped holes
Distance Between Flanges	42.6 mm (all models)
Drive Options	Coarse – pin spanner (provided High Precision – worm and wormwheel Motorised – stepper motor
Differential Pumping	Two stage via 34 FC pumping ports
Interspace Pressure	First stage 10^-2 mbar, second stage 10^-5 mbar
Payload Limits	Vertical – 80 kg at 20 mm polar offset or 120 kg with centralised load Horizontal – 20 kg at 100 mm flange offset and 20 mm polar offset Inverted – 60 kg at 20 mm polar offset or 90 kg with centralised load
Seals	Spring energised with long-life PTFE compound
Bearing type	Twin integral races
Rotation Resolution	0.05^o divisions with Vernier (0 to 360^o)
Worm and Wormwheel Gearing	1 turn = 2^o
Approx Torque to Rotate	0.005^o per half step
Operating Pressure Range	Atmosphere to 10^-11 mbar
Bakeout Temperature	150 ^oC

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RP Series Rotating Platforms
Description	Order Code
Coarse Version 100 mm bore Rotating Platform	ZRP100C
High Precision 100 mm bore Rotating Platform	ZRP100H
Motorised 100 mm bore Rotating Platform with Stepper motor fitted¹	ZRP100M
Motorised 100 mm bore Rotating Platform with encoded stepper motor fitted¹	ZRP100E
Motorised RP100 with DC motor fitted²	ZRP100DC
Straight adaptor flange 90 mm long with clearance holes (for mounting an Omniax manipulator)	ZBS1090

Notes
(1) Drive is assembled to stepper motor and is supplied with a wired connector to suit VG Scienta's stepper motor control system. A separate mating connector is available (Details).
(2) DC motor supplied complete with power supply (Details).