Equal velocity fluid delivery
The proper delivery of grinding fluid (coolant) into the grinding zone is of utmost importance. Adequate volume and pressure are not achieved if the coolant jet's velocity is either too high or too low. The exit velocity of the coolant jet should be roughly equal to the grind-
ing wheel's surface speed as this will ensure that the grinding wheel can transport coolant into the arc of contact (grinding zone). Equal velocity fluid delivery can be visually verified if the coolant jet "clings" to a 30° to 45° section of the grinding wheel's periphery.
(Source: H. w. Ott)
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