Horizontal Balancing Machine for
Extremely Small and Light Rotors
RT 01 B

Range of application
Universal balancing machines series RT series are best suited for extremely light rotors such as dental turbines, textile false twist spindles, non-ferrous armatures, rolling-elements, etc. for which the highest level of balancing tolerance is required.

The machine is designed for a standing or seated operator and can be used at varying locations.

Change over to other rotor types is possible in very short time through manual action.

Design
Soft-bearing horizontal balancing machine in table-top form for standing or seated operation with semi-automatic operational sequence.

The machine consists basically of the following main components: work table, mechanical balancing unit with tangential belt drive, measuring unit and control cabinet.

If the machine is arranged for balancing assemblies the two support pedestals are connected together by a frame. This frame supports an adapter or clamping device for supporting the rotors.

Sequence of operations

• Manually load the rotor onto the support pedestals and belt drive
• Close the protective device (if necessary) and start the automatic measuring run: accelerate, measure and dis- play the unbalance on the measuring unit, brake. The display is retained after the measuring run stops.
• Open the protective device, manually correct the un- balance (if required).
• Check the result of the unbalance correction (achieve- ment of the tolerance is displayed by the measuring unit) and unload the rotor.

The unbalance is frequently corrected manually by addition of weight, for example with quick-drying, two-component putty or weights. If the unbalance is to be corrected by removing weight, methods such as grinding, milling or drilling can be cost-effectively used. For each of these correction methods specially adapted correction devices can be supplied or added to the machine by the end-user.

Turbines, textile false twist spindles and small non-ferrous armatures present a special balancing task. Because of the normally high operational speeds extremely small unbalances must be accurately measured. The solution to this requirement is a displacement measuring machine with tangential belt drive, combined with a measuring unit of the highest sensitivity.

With extremely small rotors, such as this dental turbine, there is no possibility to use a belt drive because the influence on the measurements will be too large. In this case a compressed air drive that operates without making contact with the rotor is ideal. Through a well-designed layout of the air drive short acceleration and braking times can be achieved.