In order to avoid damage to the blades, blow bars ought to be replaced prior to they are used with. The wear limit “D” is displayed in the picture above. When altering as well as turning around blow bars, follow the instructions in the Nordberg NP Series Impact crusher user’s manual.
Blow bar replacement
Blow bars are reversible. When one face is used, the impact bar can be turned around to make use of the various other face. This procedure can only be done once. Blow bars may require to be transformed or reversed previously if wear profile is misshaped. Erratically worn blow bars may reduce production. Factors for altered wear accounts might be inaccurate feeding or feed rank. Recommendation is to alter all 4 blow bars all at once. Nevertheless in some applications can be made use of the slotted configuration.The slotted arrangement (two worn
blow bars as well as two new blow bars diametrally opposed) will certainly produce a discharge contour with a smaller amount of fines.
Breaker plate replacement
In order to take full advantage of the lifetime of the breaker plates, Metso’s machines breaker plates are secured versus wear by a number of very same sized breaker plate linings. Since wear profile isn’t very same in the whole crushing chamber, breaker plate liner settings can be rotated. Put on is higher under of the chamber.
If a few linings are used, you are not obliged to transform whole collection of the liners. You can either transform linings locations or transform just the used ones.