Transforming Art into Science

Using the force

Side force—sometimes called side load force—is the lateral force applied between the upper blade and the lower anvil ring. The purpose is to maintain traction between the upper and lower blade, allowing the upper blade to be driven by the rotation of the lower blade. Heavier materials require more side force to maintain contact between the blades. Some operators consider forcing the upper blade and lower anvil together as much as possible to improve cut quality. However, excessive force increases blade wear and can cause the lower blade to tilt over the top of the anvil, creating an open nip with the flat side of the upper blade making contact with the sharp corner of the lower anvil ring.