Tapping Torque Tester

Mini CNC Simulator with Inline Torque Measurement

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Tapping, Cutting, Drilling Tester Overview

The state of the art Rtec Tapping Torque, cutting, drilling test module allows to study metal working fluids, lubricants, taps, coatings etc. Automatic XYZ stage allows to tap, drill or do cutting automatically at several position with ease.

Module Features
● Wide range of standard taps
● Inline Torque measurement
● Automatic Multiple Tests
● Inline Acoustic sensor to measure failures

MFT-5000 Platform

Rtec Universal Tribometer MFT-5000

The state of the art Rtec Multi Function tribometer Mft-5000 is globally regarded as the most versatile and technologically advanced tribometer.  The patented integrated 3D profilometer allows to analyse surface change vs time makes it usable for many application across various industries. In addition it comes with patented force sensors (piezo, capacitive & strain gauge) with ultra low resolution, highest speeds, stable torque and widest load range than any other commercially available tribometer. 

MFT-5000 verstatily allows to mount several test/application specific modules on same platform. Please visit following links to learn more -  Lubricant ModulesMain Applications, Product page

More Information

Tapping Torque test system combines the advantages of qualitative and quantitative techniques in evaluating metal working fluids. In essence the test involves measuring the torque generated during forming, cutting and drilling making it useful in testing formulations in conditions similar to real world applications. An ideal metal working fluid should be able to provide lubrication at extreme pressures, transfer heat quickly and efficiently, be inert to the metal in contact, non-toxic, eco-friendly and competitively priced. Metal working fluids can be synthetic, semi-synthetic or water based. Surge in demand, global competitiveness, environmental and work place regulations are driving innovation in the metal working fluids and lubricant industry. Towards maximizing savings and extending life of the tools, application specific formulations are developed to meet the demands of the modern metal working industry. To harness the true potential of the cost cutting measures and develop formulations closely matched to the specific industrial application, it is important to develop testing methods that can easily and accurately test formulations with high degree of sensitivity and reproducibility. The main challenges in developing a test method to characterize the lubricants, additives and formulations used in metal working industry lies in the large number of variables faced in the metal working industry. It is difficult to characterize and control various test parameters such as temperature, stress, material, process etc. Thus traditional tribological tests such as pin on disk, plate on disk etc. provide limited information and often fall short in providing the complete picture of the actual process. 
Robust design and high torque synchronized motor of the Rtec-Instruments tapping torque test machine unit offers the unique ability to test and characterize formulations for forming, cutting and drilling. The extremely sensitive, state of the art sensors included in the instrument can highlight differences between formulations which are otherwise considered “similar” in their composition.

In addition to measuring the torque, it is also measures acoustic signal, electric contact resistance and the temperature of the tip to generate more comprehensive information about the formulations tested. The setup is versatile and automated allowing the user to test different materials and taps in an easy recipe based method. 


Rtec Tapping Torque Test Data Showing Torque During the tapping process

Materials and Test Setup

Different formulations were evaluated for forming and cutting aluminum and steel samples using Rtec Instruments Tapping Torque tribology instrument. M6 aluminum and steel taps were used to tap the threads in the samples at 600 RPM. Each test was repeated at least five times on the automated platform. The test set up is shown in Figure 1.  

Sample 1- Low concentration of Additive A

Sample 2- High concentration of Additive A

Sample 3- High concentration of Additive B

The samples were selected to study the effect of additives and their compositions in the formulations for different applications. Such tests are standard for their intended application in the real world.


Figures above shows the results of typical tapping torque test of Sample 2 repeated ten times on the automated platform using a steel forming M6 tap on a steel specimen. The acoustic signal and tapping depth is superimposed and shown. Table 1 summarizes the results obtained from different sets of tests. 


Tapping Torque test is used as a method to characterize and evaluate lubricants and fluids for the metal working industry using the Rtec-Instruments tapping torque setup. It is seen that the easy to use, automated set up with advanced sensors can provide reliable, reproducible data that can evaluate formulations in different processes such as forming and cutting. The instrument is versatile and can support various materials, taps and tapping speeds. The high end sensors make it possible to see differences in formulations that differ by only small percentages of additives making the tool a useful component in an effort to develop and test metal working fluids to meet specific applications.

All the above makes this tester a very powerful tool in the hand of the researcher or QC engineer. Please contact us at info@rtec-instruments.com or call us at +1 (408)708-9226 for more information.


Tapping Torque Tester, TTT Tester, Tapping torque test system

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