| CUSTOM WELDED HYDRAULIC CYLINDERS R & J Cylinder and Machine is a premier manufacturer of custom hydraulic cylinders and cylinder component parts for fluid power applications. Advanced Hydraulic Cylinder Engineering and Custom Fabrication We have the machining capabilities to service almost all industries. Founded in 1990, our headquarters in Dover, Ohio has over 60,000 square feet of space dedicated to the manufacturing of world class fluid power custom hydraulic cylinders and hydraulic cylinder components. We also have over 150 years of combined experience in CNC machining and precision machining services including large machining services, with an emphasis on large ID boring and honing. | |