High-Reduction Horizontal Shaft Impactor

Crushing Sentry® Horizontal Shaft Impactor (HSI)

Overview
Models
Advantages
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Strike Hard, No Drama

When high reduction ratios are your goal, the Sentry HSI brings dependable force with less complication. Its straightforward design simplifies operation and maintenance, while rugged components take on tough feed without wearing down the team maintaining it.

Whether it’s bolt-on blow bars that swap fast, or an adjustable curtain that dials in your gradation, this impactor delivers flexibility without complexity. And when it’s time for parts or support, you’ll get what you need quickly; through a responsive team that’s obsessed with follow-through.

Worker in safety vest standing on platform beside Superior® Sentry® HSI at active mobile crushing site

Models

3D rendering of the Sentry HSI SP Series with a compact single-rotor design and integrated feed hood.

SP: Primary

Takes on the first bite of the feed with a heavy rotor and wide opening built to crush massive rock in high-volume primary applications.

3D rendering of the Sentry HSI SS Series featuring a heavy-duty single-rotor and larger feed opening.

SS: Secondary

Delivers precise, high-ratio reduction with adjustable curtains and optional grinding path for a consistently cubical product.

SR: Recycle

Handles reclaimed asphalt and concrete with a rugged design and closed-circuit flexibility for efficient on-site recycling.

Advantages

Hydraulic Quick-Open Housing

Dramatically reduces maintenance time and improves safety by giving full internal access at the push of a button.

Adjust-on-the-Fly Curtains

Lets operators fine tune gradation hydraulically without stopping production, valuable for consistent spec and productivity.

Multiple Blow Bar Options

Get precise crushing for your feed with multiple blow bar metallurgies that align to your preferred performance, wear life, and budget.

High-Inertia Cast Rotor

More mass, more punch. Carries momentum through tough feed to boost reduction, consistency, and uptime.

Recycling, Site to Site

Knopik Crushing is using a 51x65 Sentry HSI to chew through 40,000 tons of recycled concrete and asphalt, everything from old curb slabs to ready-mix returns.

This crew travels to more than a dozen temporary sites during their crushing season, so a one-piece HSI plant was critical to their efficiency.

With reliable support from General Equipment & Supplies, Knopik says it’s a powerful partnership with Superior that stands behind the equipment and keeps their operation running strong.

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