Multi-Power Air Presses

Provisions for operator protection are always the full responsibility of the user Page 7 Rubber Bumpers Rod End Only ............... Option –C Cap End Only ............ Option –BR Both Ends ............... Option –CBR High Flow Vents Option –HF Temperature Range is -25 ° to + 200 ° F A ring of rubber is bonded to the top cylinder head to act as the piston stop and absorb the impact of the piston. This minimizes noise and absorbs energy, thus reducing possibili- ties of damage to the cylinder and tooling due to pounding. The amount of rubber that extends beyond the normal piston stop is designed to compress and allow full cylinder stroke at 60 to 80 psi. Bumpers should not be considered with the Viton Seal Option because of temperature or chemical limitations. Application Tips– For applications such as punching, shearing, setting blind rivets, etc., where high forces are built up and then released very quickly, the proper method of "Catching" this load is to adjust the cylinder piston and the tooling so that at the point of breakthrough the piston is very close to the bumper. This reduces the dynamic load that the piston and bumper are required to absorb. In such applications, however, it is highly recommended that either option –HS (shown on the next column) is used instead of rubber bumpers – or shock absorbers be considered and built into the tooling to assist in absorbing the force and dynamic loads generated. The atmospheric vent in the baffle is cut larger to provide less resistance to air flow. This option is used when higher cycle speeds are required. Speed & Shock Control Using Hydraulics Option –HS Std. Temperature Range (-25 ° to +250 ° F) Also available with Viton Seals. Add Option – V Temperature Range (-15 ° to +400 ° F) When Multi-Power ® Presses are applied to applications such as punching, shearing, notching, etc., high inertia and impact forces are often encountered. To capture these potentially destructive forces, and prevent possible damage to tooling and cylinder, specify option –HS. How it works – Fluid from an Air-Oil tank (see Application 7-15-99 Option Specifications Power MAXIMUM Cylinder Operating psi F19 150 psi F38 150 psi F55 150 psi F72 110 psi F93 90 psi Tips under Air/Oil Tanks on page 9) is used for the return media. Fluid flow and cylinder speed are controlled by a needle or flow control valve. When the material shears and the cylinder tries to complete the stroke, the non-compress- ible fluid resists rapid movement. It "catches" the built up forces, dissipating them before the cylinder bottoms out. Thus the piston won't "pound" on the piston stop. Beefed Up Construction– Seals on the piston, piston rod, and cylinder tube are increased in the single retract stage. The dynamic seals are Poly-Pak ® . These combine an automatic lip type seal with an O-spring energizer for excellent sealing from zero to 500 psi. A thicker piston adds .25" to the "F" dimension. Rubber Bumper Rod End –C Bumper Contact Cylinder Tube Seal Cylinder Tube Pilot Rubber Bumper Cap End –BR Poly-Pak ® Seals Standard O-ring Seal Standard O-ring Seal Static Seal F Dim . + .25 See page 4 Standard ports are enlarged to 1/2 NPT. This option is applied for the convenience of fitting selection and may result in faster cycling speeds. 1/2 NPT Ports Retract Port Only ........... Option –R12 Extend Port Only ............ Option –E12 Both Ports ...................... Option –P12 Specifications subject to change without notice or incurring obligations

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