... shape of final productImpact crusher main partsImpact Crusher is made up of first stage impact curtain with anvils,impact curtain adjusting ... , second stage impact curtain with anvils, rotor, blow bar ,wedge lock assembly, back-up bar, discharge opening,third stage impact plate and so ... materials that can’t be crushed.4. Change the blow bar of the impact crusher timely ,so the crusher can keep ...