
10.6.2 6X00 Series
1. Calculate the heat expansion factor.
Fh = (Processing temperature - Mold temperature) °C x 0.000012.
2. Calculate the heat expansion of the valve pin.
HE = distance BC x heat expansion factor = BC x Fh.
3. Cut pin to calculated length “L”.
• HY6500: L = AC - 36.35 (1.43) - HE + 0.3 (0.01) + CD [mm (in.)]
• HY6600: L = AC - 59.70 (2.35) - HE + 0.5 (0.02) + CD [mm (in.)]
• HY6700: L = AC - 64.70 (2.55) - HE + 0.5 (0.02) + CD [mm (in.)]
4. Grind the valve pin tip to the correct angle.
Refer to the General Assembly drawing or Gate Detail drawing for
grinding specifications.
5. Lap the tip of the pin into the land area (steel section in the gate area)
using a lapping guide bushing or valve bushing as a lapping guide. We
recommend 400 - 600 grit lapping paste.
6X00 Series
Figure 10-12 6X00 Series - Measure distance
10.6.3 7100 Series
1. Install the cylinder (where applicable) and piston bottom (without the pin
and piston top) into the hydraulic plate.
7100 Series
Figure 10-13 7100 Series - Measure distance
2. Measure the distance AC and BC.
10-6
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HYDRAULIC / PNEUMATIC ACTUATORS
Hot Runner User Manual
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