Internal Gear Gauges

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Flexible indicating 2-point measuring instruments for internal gear gauging. Measurement of internal and external gear gauges, taper and ovality. Applicable for internal and external gear gauges (straight-sided or helical) and for gears with even or odd numbered teeth.

The mechanical configuration of DIATEST internal gear gauges generally corresponds to the principle of split ball probes for sizes Mi=3.5 to 26.1 mm and to the principle of plunger probes for sizes Mi=26.0 to 333.0 mm. Internal gear gauges are comparative gauges which can be used in conjunction with regular accessories for split ball and plunger probes: right angle attachments, depth extensions, checking stands with floating holders etc.

Key features

Range between balls Mi = 3.5 to 333 mm
Starting from Mi = 9.3 mm (T-ZM3!) the ball anvils are interchangeable
Measuring range from 0.6 to 3 mm, depending on model
Identical to Split-Ball and Plunger Probe system
Alternative: self-centering Plug Gauge BMD-IV (starting from cylinder-Ø 10 mm) for serial measurement

INTERNAL GEAR GAUGES ZM2, ZM3, ZM6, ZM7

Balls are made of carbide. Many ball diameters are available on stock as well as roller anvils. For zero setting, please use measured sample components or setting masters. Mechanical and digital indicators storing the MIN-value can be used. Special designs on request.

Measuring process

To set the gauge use measured sample components or setting masters. Setting masters cannot be provided by DIATEST. Introduce the gauge into the measured component / setting master and determine the minimum size (reversal point) by swinging to and from and set the indicator to zero. This procedure is then repeated in the component, here the reversal point shows the deviation to the setting master.

The digital indicator MDU-M125 stores the minimum value during the oscillation through the component. The size Mi can be displayed absolutely or relatively (to the setting master).

Enquiries

For enquiries please always state the dimension between balls (Mi) and the ball diameter. In certain cases it may be advisable to provide a sample component.