Impact Crusher Wear Parts

Blow bars are mounted on the rotating rotor and strike the feed, throwing it against the impact plates and the chamber liners. Size reduction comes from that impact and from material breaking against itself, so the bar edge does most of the work and is the part that wears.

Martensitic steel, high-chromium cast iron, chrome-molybdenum alloy and ceramic-insert composites are all used, and each trades toughness against abrasion resistance. Abrasive feed that breaks easily tends to favour the more wear-resistant grades, while high impact energy or tramp metal favours a tougher bar. The feed and the rotor speed decide the balance.

The working edge rounds off progressively, so the signals are a coarser or less consistent product, lower throughput and higher power draw for the same tonnage. Where the bar is symmetrical both faces can be used before replacement, and bars are checked at each inspection rather than on a fixed interval.

Breakage usually points to the application rather than to normal wear: oversized or unbreakable feed, tramp metal, or a bar grade that is too brittle for the impact energy in the rotor. Abrasion loss is gradual and gives warning, so a cracked or broken bar should be investigated before more bars are ordered.

Check the crusher model and rotor first, then the bar dimensions - length, width and height - and the fixing method used on the rotor, whether wedge, bolt or clamp. The rotor position matters as well, because the first row of bars takes the most impact.

Yes. This category lists blow bars together with further impact crusher wear references, and impact plates and chamber liners can be produced to drawing as custom castings. Send the part description, drawing or photographs and the crusher model so the component can be identified.