प्लाईवुड ज्ञान · तकनीक · विशेषज्ञताFind the dial (gauge) pressure to set on a hot press from ply size, specific pressure, ram diameter and number of rams. Gets a printable pressure chart in kg/cm² and MPa, with size chart and capacity.
Hot Press Dial Pressure Calculator
Formula
Dial pressure (kg/cm²) = Ply area (cm²) × Specific pressure (kg/cm²) ÷ Total ram area (cm²)
1 ram area = 3.14 × d² ÷ 4; Total ram area = 1 ram area × Number of rams; Diameter = Circumference ÷ 3.14
MPa = kg/cm² ÷ 10.197; Max capacity (ton) = Max working pressure × Ram area ÷ 1000Technical notes
- Enter the ram diameter from a caliper, or wrap a tape round the ram to get the circumference.
- The chart shows dial pressure for every plywood size at a range of specific pressures. Red cells are above the maximum working pressure of the press.
- Dial values are rounded to the nearest 5, 1 or 0.1 (your choice). Always confirm with the press manufacturer before changing machine settings.
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