Humphrey BFS Cylinder

Stainless Steel Series cylinders use stainless steel tubing, drawn and polished to provide ideal lube holding, low friction internal surface. Matte finish on outside. Aluminum heads are attached to stainless steel tubes with Humphrey roll forming process to achieve secure attachment. Piston rods are centerless ground accuracy stock stainless steel as standard on all models.

Unique piston permits same overall dimensions with or without bumpers using "V" seals designed for constant cylinder tube contact eliminating seal collage and blow-by.

Return springs are high tensile strength music wire, shotpeened to relieve stresses for longer life.

Single acting Model BFS Series are economical requiring air pressure only to extend the rod. Use less expensive 3-way valve to actuate.

Block Front Mounting head provides versatile, robust side mounting using socket head cap screws through counter-bored mounting holes or using front mounting via pilot collar and tapped mounting holes.