Rivet busters from Chicago Pneumatic are designed for concrete breaking and metal cutting. CP 4608 and CP 4611 have 8- and 11-inch tool strokes, respectively, and require 45 cfm of air to operate. Controlled Power System (CPS) prevents blank firing when a unit's rubber bumper is 75 percent worn, which extends equipment life and avoids unexpected downtime, the company says. An indicator groove on the lower sleeve shows when its bumbers should be replaced. rnEsco upgraded its Posilok system, available to fit mining-class hydraulic face shovels, excavators, draglines and cable shovels, with the safety of a hammer-less locking device. Torque Wedge pin screws turn in clockwise to lock, with what Esco says is "minimal manual effort." A plug keeps fines from building up in the pin recess. Tooth changes are performed with a standard-sized hex tool. Optional wear caps provide additional protection for the adapter.
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