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Dual Shaft Rotatable Sample Transporter

Product code: RMDG40-XXXX-YYYY

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
  • 300mm travel: RMDG40-0300-0050
  • 500mm travel: RMDG40-0500-0050
  • 750mm travel: RMDG40-0750-0050
  • 1000mm travel: RMDG40-1000-0050

Order code customized version:

XXXX: linear travel in millimeters
YYYY: retracted length, flange face to end of shaft in millimeters (min. 45mm)

other dimensions on request

Options and accessories:


Specifications: Dual Shaft Rotatable Sample Transporter

linear travel X >= 0mm AND <= 1250mm; standard 0mm
retracted length Y >= 45mm AND <= 200mm; standard 50mm

  • linear travel: customised
  • retracted shaft length: customised (min. 45mm)
  • linear force: ~70N
  • torque: ~5Nm
  • bakeout temperature: 200 °C max.
  • pressure range 1E-11mbar to 1000mbar
  • dicroniteTM (W-disulfide) dry lube coated ball bearings
  • fully UHV compatible materials

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



The following is a list of compatible options for RMDG40 Dual Shaft Rotatable Sample Transporter.

List price:

1'950.00 CHF

1'794.75 EUR*
2'115.43 USD*

Pincer for Flag Style Plates

Product code: PGRMS(OMH)

As an accessory to our dual shaft sample transporters, this pincer is used to handle standard flag style sample plates.

List price:

3'850.00 CHF

3'543.49 EUR*
4'176.61 USD*

Pincer for Wafer Handling

Product code: PGRMWAF

For direct gripping of 2"... 6" wafers, this pincer design offers increased gripping force. To protect the wafer and for a secure grip, the jaws are equipped with FKM-O-rings.

List price:

1'549.00 CHF

1'425.68 EUR*
1'680.41 USD*

Compact Port Aligner DN40CF

Product code: PA40E

Compact port aligner DN40CF (2.75" OD), L=60mm +4mm/-11.3mm, free bore 38mm.

List price:

1'450.00 CHF

1'334.56 EUR*
1'573.01 USD*

Hexapod Port Aligner DN40CF for angular and lateral displacement

Product code: PA40HEX

Hexapod Port aligner DN40CF (2.75" OD), L=90 +/-5mm, free inner diameter 38mm (if centered). Hexapod port aligners are especially sturdy and allow for adjustment of lateral as well as angular displacement.

List price:

1'390.00 CHF

1'279.34 EUR*
1'507.92 USD*

Port Aligner DN40CF, both flanges tapped M6

Product code: PA40EC

Ultra compact port aligner DN40CF (2.75" OD), L=53mm +4mm/-11.3mm, free bore 38mm.

List price:

562.00 CHF

517.26 EUR*
609.68 USD*

Tube support with pivot mounted shafts OD 10mm

Product code: TSRMB

Two 10mm OD bars, support and protect the sample transporter.

List price:

1'025.00 CHF

943.40 EUR*
1'111.95 USD*

Extra-Sturdy Tube support with pivot mounted shafts OD 16mm

Product code: TSRMBS

Two 16mm OD shafts support and protect your sample transporter. Recommended for sample transporter with a travel range >=750mm


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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