PC ring hammers are pivotally mounted and can swing back when they hit an uncrushable object, then return to position - providing a degree of self-protection on mixed feed. PCZ heavy hammers are rigidly fixed to the rotor with much greater mass, delivering higher impact energy per blow for large-lump primary crushing. PCZ machines accept larger feed, handle higher peak loads, and are suited to more demanding primary applications; PC machines offer higher throughput at lower unit weight for softer, more uniform feed.

Spring cones can pass occasional tramp iron via the spring overload mechanism, but high or continuous tramp iron content (as found in C&D waste or reinforced concrete) will accelerate spring fatigue and liner wear. For recycling applications with significant metal content, a hydraulic cone with automatic CSS reset or an impact crusher with magnetic separator is the more durable solution. Contact us to discuss your specific feed composition.

On granite (200–260 MPa), Mn18 mantles typically run 500–900 operating hours before requiring replacement, depending on CSS and feed gradation. Plan change-outs during scheduled maintenance windows. OEM Mn18 mantle and concave sets are stocked for all CS-B models - keep one spare set on site.

The concave is mounted on an adjustment ring that threads into the main frame. Rotating the ring clockwise closes the CSS; counterclockwise opens it. On CS-B models, the adjustment motor turns the ring on command. Manual adjustment with a spanner is also possible. The machine should be running (or stopped for a small adjustment) before locking the ring in position with the locking cylinders.

Simplicity and cost. No hydraulic power unit to maintain, no PLC to program, no hydraulic seals to replace. CSS adjustment is mechanical and can be done by any maintenance technician. Initial purchase price is lower, and on-site spare parts requirements are fewer. For medium-hard materials at operations where maintenance resources are limited, the spring cone delivers reliable performance at the lowest total cost of ownership.

Yes - this is the standard configuration for a three-stage crushing line: primary jaw crusher → CS standard head secondary cone → CH short head tertiary cone → screen. The CS delivers 30–60 mm product to the CH, which produces the final 5–20 mm aggregate or manufactured sand feed. Both share the same hydraulic and PLC platform, simplifying operator training and spare parts inventory.

On granite (200–260 MPa), Mn18 mantles typically run 500–900 hours before replacement depending on CSS setting and feed gradation. Weekly visual checks are recommended; plan change-outs during scheduled maintenance windows. OEM Mn18 mantle and concave sets are stocked for all CS/CH models.

Spring cones require manually changing spring pre-load to adjust CSS - a time-consuming task requiring the machine to be stopped. Hydraulic adjustment is done from the control panel in under two minutes while the crusher runs. Auto-reset after an uncrushable object also eliminates the manual spring re-tightening that spring cones require after each tramp iron event.