Overload Protection Units

An oil-filled cylinder which serves as a cushion is situated in the flux path between connecting rod and slide. The cylinder is preloaded with hydraulic pressure  P_v

At each operating stroke the hydraulic pres süre increases but remains below the cut-off pressure P_A

in an overload situationthe cut-off pressure is reached causing the valve to open. The hydraulic pressure breaks down immediately and releases the slide from the mechanical load

the delay in response depends on the operating conditions and on the quality of the overload protection system. The requirement to achieve the fastest possible response is fulfilled by the system described in this brochure

Features

• Directly acting overload protection
• Fast response time < 10ms
• Low pressure peaks
• Excellent repeatability
• İnfinitely variable adjustment of press force, set either by manual or electronic control
• Suitable for double crank presses with unbalanced load
• Suitable for automated machines
• Quick and easy resetting after overload tripping
• Suitable as measuring device for determination of press force