Pin On Disk Tribometer

Run several rotary motion tribology tests, such as ball or pin on disk, across a wide load, speed, and environmental range. Compliant with ASTM G99.

pin-on-disk Rotary drive for rotary tribology
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Rotary Module Overview

Main Features:

  • 0.001 – 10,000 RPM
  • Dry and Liquid tests
  • Several test chambers
  • mN to 10,000 N load
  • Wide torque range up to 50 Nm

What is Pin on Disk Tribometer? The ball, or pin on disk, wear testing machine presses stationary pin or ball against the rotating disk. Measure coefficient of friction (COF), friction force, wear rate, wear volume, temperature, and several other tribology parameters. The pin on disk tribometer wear testing machine setup is ideal for characterizing tribology properties of alloys, ceramics, polymers, metals, coatings, and solid lubricants.

Rtec Instruments Solution – Our pin on disc tribometer rotary module mounts on our tribometers. It works across a wide speed, load, temperature, and environmental range. Using various sensors, it measures friction, wear, and adhesion of any rotating test setup with ease. The patented in-line 3D profilometer automatically measures topography change during the test. The module accommodates several application specific chambers, fixtures and test setups. The module mounts on top of the XY stage and creates any custom motion.

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    One Versatile Module. So Many Ways

    Rtec Instruments’ pin on disk tribometer module accommodates several chambers and setups. Choice of module and test conditions depend on the final application.

    Automatic In-line Imaging –

    Roughness, Wear, Volume vs Time

    Correlate friction, wear, and topography easily

    The integrated 3D profilometer automatically measures the surface topography of the wear track during the test. The XY stage with advanced encoders conveniently moves the sample between the test and image area.

    The initial 3D image acquired accounts for grain boundaries, roughness, orientation of the samples, and other localized features in contact surfaces. This information can be useful to explain the difference in friction, stick slip, and wear between specimens. 

    Wear mark progression with in-line 3d-profiler on rtec-instruments tester

    Pin on Disk Analysis

    Ball On Disc Setup And Data


    Ball, or Pin, on disc friction and wear tests require two specimens. In this case, a ball is positioned perpendicular to a flat circular disk mounted on the rotary module. The universal upper and lower sample holders are used to mount the samples. 


    Graph below shows the comparison of coefficient of  friction w.r.t. time for four coated samples under  same load and speed at 200°C. The coating on sample 1 breaks the fastest while sample 2 shows low friction throughout the test. 

    ball on disk sample compare graph

    Solution To

    Due to its multiple configurations, the pin-on-disk module is used extensively across a wide range of industries:

    • Automotive
    • Ceramics
    • Lubricants
    • Hard Coatings
    • Metal
    • Polymer

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    Get in touch, and request a demo.

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