THE HAZEMAG SECONDARY KH-TYPE DISC ROTOR – The KH-type rotor (4 row design) is normally utilized for the reduction of larger/slabby limestone, dolomite, gravel, recycled concrete, and asphalt. This rotor is an excellent choice and should be installed in the secondary impactor when the primary crusher is a Jaw. As a result of its heavy duty design, this rotor is capable of reducing slabby material up to minus 20”. The blowbars are clamped into the rotor body and secured through a mechanical wedge locking system. The blowbars are reversible (up to 3 times) for optimum wear life. Their rotation or changeout is simplified through the wedge release system and impactor downtime is reduced to a minimum. This rotor design is available on the secondary impactor models: APS, APSM, APK, and APKM.