Acer Supra 818PD Operation Manual page 30

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5.1.2 BALANCING THE GRINDING WHEEL
GRINDING WHEEL BALANCING METHOD
1. Place the balancing stand on a stable plane. Use the precision level gauges to calibrate
the leveling of the slideways on the balancing stand.
2. Place the grinding wheel on the balancing stand and allow it roll freely along the
slideways. At this time, try to find its gravity "W＂, then mark it with a chalk.
3. Fit a balancing piece (C) at the opposite direction of "W". Turn the grinding wheel 90º
and check again which position of "W" and "C" is heavier.
4. Fit two balancing pieces (K) at the equiangular positions (a) with same circumference as
"C".
5. Turn the grinding wheel until the "C" and "W" points are in a leveling condition, then
check which position is heavier. If position "W" is heavier, adjust the two balancing
pieces (K) with equiangular method toward "C" position (lighter position) until "C" and
"W" are properly balanced.
NOTE:
(1) To achieve fine finish on workpiece surface, it is important to frequently check
grinding wheel and balance grinding wheel periodically.
Select a correct grinding wheel according to workpiece material, and perform
(2)
grinding wheel balancing.
5-2
818~2040 PD