Depending on the model series of the machines, different blow bar shapes are used. KLEEMANN offers three different shapes: X shape, S shape and C shape.
The X shape blow bars are fitted to the MR 100, MR 122, MR 150 and MR 170. They are pushed into the rotor from the side and affixed. In contrast to the other systems, the blow bars rest loosely in the rotor. The use of highly wear-resistant blow bars, e. g. chrome steel or chrome steel with ceramic insert, is not recommended for these mounting variants due to the increased risk of breakage.
A newly developed clamping system is now used with the S shape blow bars installed in the MR 130. The blow bars are fastened to the rotor without any play using clamping wedges. This reduces the risk of breakage for wear-resistant blow bars, such as those made of chrome steel or chrome steel with ceramic insert. In contrast to the X shaped blow bars, the blow bars can be mounted and dismantled from above.
Further developed for the EVO generation, the design is known as the C shape. The blow bar affixing to the rotor is handled here by means of the lug of the blow bar. These are made thicker at this place, so that the clamp cross-section is strengthened in the highly-stressed area. The rigid mounting also ensures that impact energy is optimally transferred to the rotor, which substantially further reduces the risk of breakage in highly wear-resistant chrome steel blow bars.