Hollow Wobble Stick - WH

UHV Wobble Stick

The Hollow Wobble Stick utilises a flexible edge welded bellows to enable effective manually operated movement within the vacuum chamber. Mounted on a 70mm OD CF flange, the WH series also has an additional 34mm OD CF travelling flange - to enable small tools or vacuum instruments to be directly inserted into the vacuum chamber. The additional shaft has a clear bore of 3.9mm, suitable for rotary drive units.

Key Features

Linear and Angular Movement

±22.5° Angular Movement

70mm OD CF Flange

Secondary 34mm OD CF Travelling Flange

Travel Lengths


Fully Bakeable to 250°C

No Need To Dismantle Any Part of the Drive

Leak Rate

1x10-10 mbar l/s -1

Position Lock

Enables Sample To Be Locked In Position

Information Table


Hollow Wobble Stick

Flange OD mm Linear Travel mm Retracted A mm Extended C mm Extended B mm Retracted D mm 34mm OD Travelling Flange Order Code
70 80 139 74 159 79 ZWS075H
70 151 210 74 259 108 ZWS150H
70 237 296 74 381 144 ZWS225H
70 280 339 74 442 162 ZWS275H