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2.7.2 Taking a load off the ball cup
The weight is taken off the ball cup and/or the test balls after the motor (spindle) has come
to a stop and you have pressed down the release lever.
Take out the ball cup. Use the square in the mounting plate to dismount the ball cup.
2.7.3 Measuring microscope for standard ball cup and temperature-adjustable ball
cup
The measuring microscope (item no. 002.00403) is used to measure the wear scars without
you having to take the balls out of the VKA ball cups.
We have developed a specific acceptance device which allows you to pin the measuring
microscope on the STANDARD BALL CUP (item no. 002.00426) and the
TEMPERATURE-ADJUSTABLE BALL CUP (item no. 002.00145).
You only need to exchange the supplied clamping nut of either the standard ball cup or the
temperature-adjustable ball cup.
Measuring microscope operating instructions:
After a test run is completed, pin the microscope acceptance device on the clamping nut
and place it into the foot together with the respective ball cup.
Now turn the upper ring until you feel a detent. Then turn the lower ring until the first
wear scar appears in the microscope.
Focus the lens of the microscope as described in the operating instructions.
Tighten the knurled screw at the side of the lower ring to fix the position.
Turn the upper ring in 120 °-steps (each time until you feel a detent) to measure all three
wear scars, one after the other.
Warning:
You can only measure the wear scars when the balls are clamped in. The balls shift
when you loosen the clamping nuts.
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