The cylindrical steel mold is supported on roller wheels at specific points along its horizontal length.  An electric motor spins the drive wheel which transfers the rotary motion to the mold, reaching spinning speeds greater than 1000 rpm.

• Rotational speeds are calculated  against  the radius of the mold and the  weight of the casting.

• The speed is set to pick up and hold the molten metal against the mold wall through the full rotation without liquid slippage on the wall or dropping ("raining") at the top of the rotation.