Air-powered stirrers – see SR940. Alternative stirrer bearings – see SR946.
Simple screwcap glands Screwcap adapters may be used as simple glands for basic stirring operations providing they are not used at high speeds or under vacuum. The silicone rubber ring inside the cap should be suitably lubricated. Size 13 thread adapters are suitable for 6mm stirrer shafts and size 24 for 11mm shafts.
See QST51 to QST55
Ground sleeve glands With lubricant reservoir. For use up to 700rpm and at pressures down to 0.1 torr (13.3 Pa). Rotation of the stirrer is achieved by coupling to a geared motor.
To fit stirrer
shaft mm
QST20/2 QST20/3
Screwcap sleeve Screwcap sleeve
6 11
Cone size
19/26 24/29
Thread size
13 24
QST4/2 through which width Smallest neck Blade Stuffing box glands
With integral drive pulley except ST3/2F which requires coupling to a geared motor via a flexible connection.
