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3.0 Installation and Use of Conventional/Universal Wobble Sticks
In order to be able to use the maximum available angular movement, the wobble stick should be
installed in a suitable 41 mm ID port which has a maximum length of 40mm from the flange face to
the inner wall of the chamber. The user must ensure that the bellows are not damaged in any way by
driving them into the port tabulation or chamber wall when operating the device. It is equally important
not to apply any twisting forces to the bellows during operation.
4.0 Construction
Wobble sticks are very simple devices and should not require any routine maintenance; an occasional
check should be made that the push rod has not unscrewed. If the smooth sliding action of the push
rod becomes more difficult to operate, the rod should be re-lubricated with a MoS
2
spray such as
Rocol DFSM (see section 5.6).
