Wobble Sticks - Introduction

Four different types available.
Fully UHV compatible.
Range of standard travels.
Fully bakeable from +250°C to +450°C depending on type.
Edge welded bellows used for superior performance.
Pincer grip versions allow easy sample pick up.
Mechanical hands for increased versatility and transfer capability.

Wobble sticks enable relatively simple hand operated movements to be transmitted through the wall of a vacuum vessel. They are supplied on 70mm O.D. flanges and are capable of being baked without dismantling. They are located at all interchange points in the vacuum system where a sample must be transferred between, say, a transport device and a sample holder.

Wobble sticks can also be used as actuators to operate mechanisms inside a vacuum system; for example: shutters, adjustment probes, variable orifices, etc.

The wobble sticks are made from stainless steel edge welded bellows sections. There are three different types of wobble stick as standard:

The conventional version uses a single bellows to give travels in all directions.
The universal versions use two sizes of edge welded bellows.
The pincer grip versions are identical to the universal except for a coaxial shaft running up the centre of the operating shaft which operates a small pincer grip assembly.
The mechanical hand versions use many of the same parts as the pincer grip but with the addition of the torque limiting pistol grip.

The type of wobble stick that is used is normally dictated by the types of samples or levels of work they are performing.

Example of Sample Transport System
	Wobble sticks are located at all the interchangeable points in the system where the cassettes, or the specimens, must be moved from one device to the next.