English to Portuguese Tech/Engineering Mechanics / Mech Engineering ball roller

The ball roller is positioned within the helical groove of the piston.

As disclosed, the collision sensing system includes an outer housing with a ball roller set screw mounted thereto, a piston, a lower housing, and an electro/mechanical switch assembly.

A ball roller, illustrated as ball roller set screw 38, is installed into the mounting hole 28 and may be secured by a locking nut 39.