New wedge clamp from Hilma offers patented safety feature

Hilma has introduced a new version of its wedge clamp that features a patented safety notch added to the tapered clamping bolt. The notch supports the upper die in the event of a pressure loss.

The wedge clamp comprises a hydraulic cylinder block and a bolt guided within the housing. As it clamps and the bolt advances, it mechanically locks the die in place with its 20-degree tapered clamp surface. If a pressure loss occurs, this safety feature will engage with a mating notch in the tapered clamping plate on the die set, securely holding the upper die. During unclamping, the extended bolt retracts fully into the housing for easy die removal.

The wedge clamping elements, with single or dual action, exert forces of 3 to 69 U.S. tons and have a maximum temperature rating of 570 degrees F. The clamps can be actuated via hydraulic, electric, or springs.