The high speed, high production rib and interlock machines are ideal for producing the finest quality fabrics. The computer designed closed cam track system ensures positive needle control and superb stitch definition. The rib is equipped with a 2 piece, fully tracked cylinder cam (U.S. Patent 5,182,927 Foreign Patents Pending) allowing for adjustment of the stitch draw without losing the yarn feeding position of the needle. This unique cam design offers the close tolerances of a monoblock cam, while allowing for separate stitch adjustment. The rib machine is easily converted to produce interlock and eightlock fabrics.