ESCO HSI Wearparts
Long wear life, consistent fit, and excellent service from the dealer and manufacturer are the major reasons that ESCO Horizontal Shaft Impactor (HSI) crusher bars have become the overwhelming favorite of sand and gravel producers and recyclers.

You can choose from 3 alloy types for the Impeller Bars best suited for your application.

Impeller Bars for:
ESCO® Alloys Suited for Your Specific Application
Alloy BHN# Description Application
14HN 312
(500    650)
Manganese Work-hardens on the surface Large feed +8" (+20.3 cm)
with potential for tramp iron
18CR 550 Through-hardened steel Feed will not work-harden manganese.
Some rebar present. Maximum feed size
10" 12", (25.4   30.4 com)
35F 750 Chrome White Iron
Through-hardened
Small Feed -8 maximum, (20.3 cm)
maximum with NO tramp iron
HSI Accessories include curtain Liners, Rotor Shoes, and Side Liners

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