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Timken
Super Precision manufactures ball bearings
and related products for applications like
airplane instruments and artificial hearts where
precision is critical. Now the company is
introducing a significantly improved diagnostic
tool that measures that precision.
A
subsidiary of The Timken Company, Timken Super
Precision recently updated its RT2C Running Torque
Tester. The new torque tester, the RT2C-E employs
a more user-friendly graphical-user interface, and
provides on-screen torque trace features that
provide for fast bearing analysis. These traces
can then be saved to the built in hard drive for
future reference, or printed to paper with the
attached printer.
The
Running Torque Tester is a diagnostic tool used to
measure running torque values of miniature and
instrument ball bearings. After loading a bearing
into the gauge, the torque tester uses a
“triple-action” air assembly to simultaneously
load, isolate, and align the bearing.
The
Running Torque Tester automatically computes
average running torque, peak running torque,
average hash width and maximum hash width. Armed
with this data users can identify a number of
common bearing problems including poor geometry,
retainer hang-ups, dirty or contaminated bearings,
a flat, brinelled or pitted raceways, and poor
race-to-face parallelism within the bearing.
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This data can then be used to assess the quality
of a single bearing, or a group of bearings using
sampling methods. The Running Torque Tester can
also be used to determine a bearing’s quality
prior to use, or in analysis after bearing
failure. Operators can then archive test data for
future use in diagnostics and forecasting.
The
system provides users clearly labeled on screen
buttons, providing easy, efficient access to
specific operations. The standard tooling
delivered with the RT2C-E is capable of accepting
26 industry standard miniature and instrument
bearing sizes, ranging from 1/8” OD to 7/8”
OD. Optional tooling is available to accommodate
larger sizes as well as bearing assemblies,
motors, and other rotating assemblies.
The
Running Torque Tester meets or exceeds the guidelines
established by MIL-STD-206, the most comprehensive
running torque specification in the industry. Torque
tests are usually done at the low rotational speed of 2
rpm, and at axial loads of 75 or 400 grams. However, the
tester can handle loads up to 20lbs. and speeds as high
as 30 rpm.
Other
features of the RT2C-E Running Torque Tester include SPC
compatible “Data Streaming” for statistical
analysis, and JPEG picture documentation.
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