Rottler H85A - Coolant; Coolant Types and Selection; Refractometer; Coolant Pump System

Section 5 Operating Instructions H85A Manual
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5-11
Cross Hatch Angle and Washout
The ideal situation would be for a hone to change the direction it is traveling instantaneously. If this was
possible the angle of the cross hatch would stay consistent through the entire cylinder. The Rottler H85A
uses high speed electronics in cooperation with a ballscrew drive to change the direction of travel. This
reduces the amount of Cross Hatch wipeout considerably from a crank driven rocker arm. As a rocker
arm changes direction, the rate of travel slows but the rotation speed of the hone head stays consistent.
This is the cause of washout at the top and bottom of cylinders. Since the H85A has a linear travel
spindle this condition does not exist.
Coolant:
Coolant types and Selection:
When using Vitried honing stones you must use a petroleum based coolant. Such as Mobil Met 33 or
Upsilon or any equivalent light honing oil. This is required since vitried honing stones are not compatible
with water based synthetic coolants.
Diamond stones will work with oil or water based synthetic coolants, but work most efciently with the
water based synthetic coolants. Rottler Manufacturing recommends the use of Rottler 514-4-71C water
based, synthetic coolant for diamond only applications. This coolant works best when mixed to a 5% –
8% solution.
Refractometer:
A Refractometer is used to measure the amount of coolant to water ratio. A 5% to 8% ratio will read a 3 –
5 on the Refractometer. It is important not confuse the ratio with the actual Refractometer reading.
Coolant to Water Ration is 1:20 thus 1 gallon of coolant to 20 gallons of water.
Coolant Pump System:
The coolant tank on the H85A will hold a maximum of 70 gallons of the selected coolant.