Bearing Inspector II Bearing Test System

Bearing Inspector

Testing Capabilities

Both starting torque and running torque can be measured with the same system, the same tooling and in the same test cycle. From this testing a variety of bearing problems can be identified.

  • Bearing Contamination
  • Retainer Hang-up
  • Brinelled or Pitted Raceways
  • Poor Geometry
  • Structural Defects
  • Reporting Options

Customized reports that show only the required information for a particular customer or a specific application can be easily generated, viewed on the screen and outputted to a conventional printer or strip chart printer.

The Bearing Inspector II is a bench top system for measuring the torque characteristics of anti friction bearings and bearing assemblies. Contained in the system are a customized computer, monitor, keyboard, and the necessary circuitry for performing a test and processing the results. User-friendly menus enable the operator to rapidly become proficient with the operation of this National Instruments Labview based system.

The BRG-3000 series of bearing test systems are designed to comply with MIL-STD-206B.

Standard features such as 2 serial ports, one parallel port, four USB ports and a CD/DVD drive are provided.

Test configurations are stored in memory and are retrievable with the click of a mouse key, avoiding time consuming setups. Test results can be stored in memory or on a disk and then transported to other peripheral devices for further analysis and processing.

For more information, please select from the choices below

  • System Description

    This state-of-the-art computer and bearing test head makes performing tests as easy as 1, 2, 3.

    The Bearing Inspector II System consists of a state-of-the-art computer and a Standard, or High Load, Bearing Test Head. The test head contains a Vibrac Torque Transducer, an Optical Encoder and a Variable Speed Drive. This design enables the system to rotate the bearing at a constant speed (0.5 to 10 rpm) while measuring both torque and position.

    Standard model

    High Load model


    • Processor
    • Monitor
    • Keyboard
    • Mouse
    • 120 or 220v AC


    • Light or High Load Gauge
    • Granite Table Top (with High Load version only)
    • Adjustable Vertical Positioning
    • Precision Inner and Outer Race Tooling Available

    Physical Description:

    • Dimensions: 15" D x 15.5" W x 30" H
    • Weight: 60 lbs.
    • Speed: .5 to 10 rpm standard (higher speed optional)
    • Direction: Bi-Directional
  • Operating Specifications
    • Input Power: 115 VAC (220 VAC 50 HZ optional)
    • Temperature Environment: 60 to 90 degrees F
    • Humidity Environment: Up to 95% non-condensing

    Torque TransducerTest Head: A Vibrac Model 9405A test head is the mechanical testing portion of the BRG 3000 Bearing Inspector II System. This test head combines an Optical Torque Transducer, an Optical Encoder and a Variable Speed Synchronous Drive. This combination enables the system to rotate the bearing at a constant and precise speed while measuring both torque and position.

    Torque Transducer: A Vibrac Mini Series Static Torque Transducer is used in this test head. The principal of operation for these torque transducers is pictured below.

    Standard Torque Transducers: The torque measuring capability of the test head can be changed by simply changing the transducer and then selecting it in the software window shown below.

    Transducer Diagram

    Drawings are for illustrative purposes only.
    Contact Vibrac Europe for current specifications.

    Torque Transducer Specifications:

    Note: Consult factory for other torque values.

    Optical Encoder:

    • Line Count: 9000
    • Accuracy: +/- .02 degrees.

    Drive Motor:

    The system is supplied with a variable speed synchronous drive with a Speed Range of 0.5 to 10 RPM.

    Positive Overload Protection

    Due to the relatively sensitive nature of the Bearing Inspector transducer, positive overload protection is provided.

  • Software Features

    The Bearing Inspector II Computer System is a customized product from a major commercial supplier and will meet the following minimum specifications:

    • Intel Pentium Dual Core Processor
    • Windows Software
    • 100 GB Hard Drive (minimum)
    • Flat Panel Monitor (17")
    • 101A Keyboard & Optical Mouse

    Screenshot of Torque Graph

    Testing Made Easy

    A user-friendly front panel, consistent with other Windows based programs, is provided for communicating with the National Instrument Labview based software.

    • 1GB RAM (minimum)
    • 4 USB Ports
    • 1 Serial Port
    • 1 Data Acquisition Card
    • 1 Motion Control Card

    Screenshot of Bearing Inspector Test Screen

    Programming Features

    The system software offers drop down menus for rapid programming of tests and recalling of past test results. End-of-test reports can be custom designed to meet the user's needs. Data can also be easily exported to MS Excel, or output to both conventional printers and strip printers.

  • Calibration and Tooling

    Tooling for Inch Series Bearings

    Close Up of Tooling

    Calibration Kit for Bearing Inspector II includes: Calibration Bracket, Calibration Beam, TEC Cable, One Calibration Weight for Each Torque Transducer Size

    Calibration Beam on Torque Transducer

    Calibration Screen Shot

    Calibration Screen Shot