In addition to their shape, the blow bars benefit from the properties of their respective components:
The chamfering of the impact edge, aligned to the rotor's rotational direction, ensure longer crushing effectiveness and better crushing performance for a prolonged period of time.
The holes on the side ensure easy and quick handling when turning or exchanging the blow bar.
The lug on the back assures ideal transfer of the centrifugal forces to the rotor (C-shape only).
The clamping wedges fix the blow bars in position and ensure that they rest correctly on the contact surfaces of the rotor. The machined clamping surface provides a precise fit over the entire length with a reduced risk of breakage.
Depending on the crusher size and application, KLEEMANN impact crushers are fitted with one of a selection of different rotors. The number of blow bars installed depends primarily on the crushing chamber geometry and its corresponding intake behaviour. In the case of smaller crushing chamber geometries (< 1100 mm intake width and a rotor diameter of < 1100 mm), rotors with two or three blow bars are used. Larger crushing chamber geometries (over 1,200 mm with larger rotor diameters > 1,200 mm) are equipped with rotors featuring four blow bars to increase the operational spectrum. In the majority of applications, these rotors are operated with two high blow bars and two low blow bars.