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Dual Shaft Rotatable Sample Transporter with PGRMS


The RMDG40 is an all metal sealed,linear-rotary feedthrough with independent rotation of the inner as well as the outer shaft. It's main purpose is to transport samples between UHV-chambers. The independent rotary motion of each shaft enhances operation of sample locking mechanisms and sample carrier platforms by being able to drive and also rotate them.
Two sets of rare earth magnets on the air- and vacuumside provide the necessary force to ensure a rigid coupling from the handle to the shaft. All ball bearings are DicroniteTM (W-disulfide) dry lube coated. On request, the RMDG can be built with SiC ceramic hybrid ball bearings.

Order code standard length
  • 250mm travel: RMDG40-0250-0095-PGRMS(OMH)
  • 500mm travel: RMDG40-0500-0095-PGRMS(OMH)
  • 750mm travel: RMDG40-0750-0095-PGRMS(OMH)
  • 1000mm travel: RMDG40-1000-0095-PGRMS(OMH)

Order code customized version:
XXXX: linear travel in millimeters
YYYY: retracted length, flange face to end of pincer grip in millimeters (min. 90mm)
Options and accessories:


Specifications: Dual Shaft Rotatable Sample Transporter with PGRMS

linear travel X >= 0mm AND <= 1250mm; standard 0mm
retracted length Y >= 90mm AND <= 200mm; standard 95mm

  • linear travel: 300mm, 500mm, 750mm, 1000mm or customized
  • linear force: ~70N
  • torque: ~5Nm
  • excentricity deviation at 250mm: ~ 0.75mm
  • excentricity deviation at 500mm: ~. 1.00mm
  • excentricity deviation at 750mm: ~ 1.75mm
  • excentricity deviation at 1000mm: ~ 2.00mm
  • bakeout temperature: 200 °C max.
  • He leak rate: <1*10E-10mbar*l/s
  • pressure range 1E-11mbar to 1000mbar
  • fully UHV compatible materials
  • degree of freedom sample plate: +/-2° horizontal and vertical

Download drawing (pdf)
Download deflection data sheet (pdf)
Download manual (pdf)


The following is a list of compatible options for RMDG40-PGRMS(OMH) Dual Shaft Rotatable Sample Transporter with PGRMS.

List price:

5'811.00 CHF

5'348.37 EUR*
6'303.97 USD*

Motorized linear drive for RM and GMD sample transporters

Product code: DRVRMOTL

1-axis motorized precision drive unit for RM and GMD sample transporters for automatic and reproducible extension of the shaft. Rotary motion is done manually.

List price:

9'985.00 CHF

9'190.06 EUR*
10'832.07 USD*

Motorized linear and double rotary drive for RMDG / RMJG sample transporters

Product code: DRVRMOTLRR

2-axis motorized precision drive unit for RMDG or RMJG sample transporters. For automatic and reproducible extension and independent rotation of it's two shafts.

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