Cone Crusher Adjustment Cap

The cone crusher adjustment cap is a key component in the crusher's gap adjustment system, mounted on top of the adjustment ring or upper frame. Its main functions include controlling the crushing gap (enabling precise adjustment of the distance between the moving and fixed cones), locking components (securing the adjustment ring after adjustment), distributing loads, and supporting seals.​ Structurally, it is a cylindrical or conical component consisting of the cap body (made of high-strength cast steel like ZG310–570 or forged steel), threaded bore or external threads, locking mechanisms (such as locking slots, set screw holes, and tapered interfaces), top flange, seal grooves, reinforcing ribs, and indicator marks.​ The casting process for medium to large adjustment caps involves material selection, pattern making (with shrinkage allowances and draft angles), molding (using sand molds), melting and pouring (with controlled temperatures and flow rates), cooling and shakeout, and heat treatment (normalization and tempering). The machining and manufacturing process includes rough machining, thread machining, locking feature machining, finish machining, surface treatment, and assembly of seals.​ Quality control processes cover material validation (chemical composition and hardness testing), dimensional accuracy checks (using CMM and thread gauges), structural integrity testing (NDT like MPT and UT), functional testing (adjustment range and locking effectiveness verification), and seal performance testing. These ensure the adjustment cap has the required precision, strength, and reliability for consistent crushing gap control, guaranteeing optimal crusher performanc