hydraulic cylinder for excavator

Differential hydraulic cylinders provide unique force/speed control capabilities through their unequal piston area design, making them ideal for specialized industrial applications. In metal forming presses, these cylinders deliver rapid approach strokes using the rod-side area, then switch to high-force pressing with the full piston area, achieving both productivity and power in a single compact unit. The packaging industry utilizes them for optimized clamping sequences where fast initial closure transitions to precise final compression force.  

 

Material handling systems benefit from the cylinders' ability to provide two-speed motion without valve switching - empty forklift attachments move quickly using the differential circuit, then automatically shift to high-force lifting when loaded. Automotive production lines employ them for wheel hub pressing operations that require initial fast positioning followed by ultra-precise final assembly force.  

 

Specialized applications include:  

• Injection molding machine ejector systems  

• Aircraft component assembly fixtures  

• Railway wheel press installations  

• Heavy-duty industrial staplers  

 

Modern differential cylinders incorporate position sensing on both piston and rod sides for closed-loop control of transition points. Energy-saving versions recover fluid from the rod side during extension strokes, reducing pump flow requirements by 30-40%. The design's inherent ability to provide different force/speed characteristics from a single pressure input makes them particularly valuable in mobile equipment where space and weight are constrained.