Products   Sample transfer arms   Linear power probe

Linear motion only

LPP series

 

High-performance magnetically-coupled linear devices, designed for sample transfer where only linear motion is required and rotation is undesirable.

Available in standard stroke lengths from 304mm to 1524mm with motorisation options. The LPP is bakeable to 250°C without removing any components.

For demanding UHV applications,  we recommend choosing the 'XLPP' option with rolling metal & ceramic bearings for smooth low friction actuation with minimal outgassing.

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Key features

  • Internal anti-rotation system ensures straight in-line motion
  • No need for conventional external linear guide bars 
  • Unrivalled axial coupling strength
  • Exceptional axial stiffness 
  • Zero backlash under low load
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The Linear PowerProbe should be selected where only linear motion is required and twisting or turning of the sample would be undesirable. An anti-rotation system is fitted internally ensuring straight,in-line motion, despite any rotation of the external drive thimble. This removes the need for the unwieldy and bulky external linear guide bars used by other manufacturers and guarantees no rotation during the stroke.

Furthermore the external drive carriage has only a linear magnetic coupling (no rotary magnetic coupling) meaning no torque is applied to the shaft when rotating the thimble. Fewer parts also means that this linear only version of the PowerProbe is a lower cost than the rotary and linear versions. A retracted switch option is available which provides indication when the probe is fully retracted. This signal can be interlocked to prevent, for example, the premature closing of a gate valve before the PowerProbe has fully retracted.

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CADENAS models may differ from the latest product specification, please check with us prior to placing a purchase order.

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Specifications

LINEAR POWERPROBE STANDARD
Mounting flange size CF40 (2.75" OD) up to 1219mm strokes or CF63 (4.5" OD) for 1524mm stroke
Linear axial coupling break-away force 140 N (31.5 lbs)
Sample weight/load capacity Maximum recommended internal load-carrying capacity will be a function of probe extension, but we recommend not to exceed a moment of 20 Nm (177 in-lbs)
Maximum recommended internally applied load when vertically installed This is a function of the load acceleration. In a static case the load may approach the coupling linear break-away force, however, it would be wise to apply a sensible safety factor
Pressure range Atmosphere to 5x10-11 mbar
Bakeout temperature PowerProbes are bakeable to 250°C without the removal of any components (except for motors).
Position locking Thumbscrew (manual only)
Technical Datasheet Download technical datasheet