Internal Gear Inspection – your challenges resolved

Inspecting internal gear quality is a challenging task due to the limited access to datums as specified in the drawings or assemblies. Often, the datum can be the Pitch Circle Diameter (PCD) itself, necessitating the use of gear testers which are not only expensive but also time-consuming, especially when 100% inspection is required. Ensuring the accuracy of internal gear inspections it is crucial to avoid the risk of components getting rejected at customer (OEM) end despite inspection.

Why is Internal Gear Rolling Inspection Challenging?

1. Accessing Inner Surfaces:

Measuring the inner surfaces of gears accurately is difficult due to confined spaces. Traditional methods struggle to reach these areas without disassembly.

2. Defining and Locating the Datum:

Choosing and accurately locating the datum point or surface is critical for accurate measurement. Variations in the datum can lead to significant errors in the inspection results.

3. Alignment and Positioning:

Achieving precise alignment and positioning of the gear relative to the inspection equipment is essential for accurate measurements. Any misalignment can lead to erroneous results.

4. Access to Gear Features:

Some internal gear features may be difficult to access with standard inspection tools. Specialized equipment or techniques may be needed to reach and measure these features accurately.

Challenges in DuB Inspection of Internal Gears

1. Determining Diameter under Balls (DuB):

Finding the DuB is particularly challenging for smaller gears, requiring precise tools and expertise.

2. Probe Navigation:

Maneuvering the probe through the internal structure without causing damage or missing critical areas is complex and demands high precision.

3. Ensuring Consistency:

Manual inspections often lead to inconsistent results due to human error and varying skill levels.

4. Measuring Odd and Even Number of Teeth:

Equipment capable of measuring both odd and even numbers of teeth can be challenging to calibrate and use effectively.

Internal Gear Inspection – How CalibroMeasure helps to solve the issues?

CalibroMeasure’s Internal GearMate is the solution to these challenges.
The 5 benefits of Internal GearMate are –
  • Enhanced Accuracy: Automated inspections provide precise and consistent measurements, reducing errors.
  • Time Efficiency: Speeds up the inspection process, allowing for quicker turnaround times.
  • Cost Savings: Minimizes the need for manual labor, lowering operational costs.
  • Improved Quality Control: Detects defects early, ensuring high-quality standards are met.
  • Data Integration: Seamlessly integrates with digital systems for real-time data analysis and reporting.

Internal Gear Inspection – Need a reliable solution?

With Internal GearMate, gear manufacturers can achieve reliable and consistent inspections, transforming a challenging task into an efficient, accurate process. 

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About Us

CalibroMeasure Equipments P. Ltd. with its highly experienced team designs & manufactures automated dimensional inspection solutions for precision gears & transmission shafts for final as well as in process inspection.


Addrees: G-39/7/2, MIDC, Waluj Aurangabad, Maharashtra, India


Phone: +918975767905, +919822032062