Outside disk micrometers for gear measurement – SA105

The outside disk micrometers for gear measurement are measuring instruments designed for checking the tooth thickness on gears and similar components when a specific inspection is required that cannot be performed in the same way with a standard outside micrometer. They are commonly used in mechanical workshops and quality control applications where the chordal thickness of the gear tooth must be measured with a dedicated instrument.

The main feature of these instruments is the presence of the disks, which allow proper contact with the tooth profile during measurement. In this way the micrometer can be used to inspect the chordal tooth thickness of gears, an important dimension when checking gears, production dimensions and applications requiring reliable and repeatable measurements.

Compared to a standard outside micrometer, the geometry of the measuring faces is completely different because it is designed specifically for gear inspection. It is therefore not a generic micrometer, but a solution developed for gear applications where correct interaction between the disks and the tooth profile is essential. For this reason, the outside disk micrometer for gear measurement is widely used by operators working with gears and toothed components requiring more dedicated inspection methods than standard models.

From a construction point of view, these instruments feature a hardened and ground micrometer screw together with a steel frame. The 0.01 mm resolution makes them suitable for hundredths dimensional inspections required in many industrial applications.

The available range covers sizes from 0-25 mm up to 175-200 mm, with 25 mm measuring steps. This allows users to select the most suitable outside disk micrometer according to the size and measuring range of the gear to be inspected, while maintaining the same operating concept throughout the series.

From an operational point of view, the outside disk micrometers for gear measurement are practical solutions for mechanical workshops, tool rooms and quality control departments working with gears and similar toothed components. They are intended for applications requiring dedicated instruments for tooth thickness inspection, with a configuration specifically developed for this type of dimensional verification rather than for generic external measurements.

Applications

• Measurement of tooth thickness on gears
• Chordal inspection on gears
• Dimensional inspections in workshops
• Production inspection of toothed components
• Use in tool rooms and quality control departments
• Measurements on mechanical components with toothed profiles
• Applications requiring outside disk micrometers

FAQ – Outside disk micrometers for gear measurement

What are outside disk micrometers for gear measurement?
They are measuring instruments designed for checking tooth thickness on gears and toothed wheels. Thanks to the disks, they can perform measurements that standard outside micrometers cannot carry out correctly.

What are disk micrometers used for?
They are used to measure the chordal tooth thickness on gears. They are therefore specific instruments for dimensional inspection on toothed components and gears.

Are disk micrometers and gear micrometers the same thing?
Yes, in this context both names refer to the same type of instrument. The terminology changes, but the function remains the inspection of tooth thickness on gears.

What does chordal thickness measurement on gears mean?
It refers to the specific measurement of tooth thickness directly on the gear tooth profile. It is commonly used in gear inspection and for verifying a functional tooth dimension.

Why are standard outside micrometers not suitable for this application?
Because standard outside micrometers are designed for generic external dimensions. Gear inspection requires a dedicated measuring geometry, such as the disk configuration used on these instruments.

How are gear micrometers used?
The instrument is positioned correctly on the gear tooth, bringing the disks into contact with the area to be checked, then the measured value is read on the micrometer scale. Proper positioning and clean contact surfaces are important for reliable inspection.

What is the purpose of the disks on these micrometers?
The disks allow the instruments to adapt correctly to the tooth profile geometry. They are the key feature that makes these micrometers suitable for gear inspection.

What is the difference between a gear micrometer and a standard outside micrometer?
A gear micrometer is designed specifically for tooth inspection, while a standard outside micrometer is intended for generic external dimensions such as diameters and thicknesses. Both the application and the measuring face geometry are different.

What resolution do these disk micrometers have?
These instruments have a 0.01 mm resolution, suitable for hundredths dimensional inspections on gears and toothed components.

What is the purpose of the hardened and ground micrometer screw?
It is a fundamental component because it influences smooth movement and measurement quality during dimensional inspection.

Up to what measuring range are these gear micrometers available?
The available range starts from 0-25 mm and extends up to 175-200 mm, with 25 mm measuring steps.

Who are these instruments intended for?
They are intended for mechanical workshops, tool rooms, production departments and quality control applications working with gears and requiring dedicated gear measuring instruments.

What are the most common mistakes when measuring gears with disk micrometers?
The most common mistakes are incorrect instrument positioning, dirty contact surfaces, improper contact management and choosing an unsuitable measuring range. Correct positioning is fundamental in this type of inspection.