Sentry® Horizontal
Shaft Impactor (HSI)

Sentry HSI 51x65 Superior Industries


A Horizontal Shaft Impact (HSI) crusher is one of the most popular tools for producing cube-shaped products.

Feed material quickly contacts a series of blow bars spinning rapidly on a rotor. These blow bars (hammers) violently toss the rocks against steel curtains (aprons). Eventually, newly shaped rock exits the opening at the bottom of the HSI.

Compared to compression crushers like jaws and cones, horizontal shaft impactors will accept larger feed sizes, process a higher tonnage and allow excellent control of particle shape and size by simply adjusting the spacing of its internal components.

Superior builds more than a dozen HSI models:

  • Maximum feed size up to 31″ (800mm)
  • Product size of 10″ – 1″ (254 – 25mm)
  • Maximum tonnage rate of 990 STPH (900 MTPH)

Features & Benefits

Sentry HSI - CONEXPO 2020_Booth_ by Superior Industries
Sentry HSI on display at Superior’s CONEXPO/CONAGG 2020 booth.


opening & closing

Access to cavity is controlled hydraulically for safe and consistent entry to internals.


inspection doors

Multiple chamber access points at the top, side and back of the crusher.


blow bars

Two, three or four bar options with multiple material options improves application flexibility.


side liners

Mix and match these universally-sized liners to prolong wear life and decrease replacement costs.


rotor design

Open rotor design generates high inertia for lower cost of ownership.


curtain adjustment

Easy hydraulic adjustment of the crusher’s closed side setting (CSS).

Impact Crushers

benefits of impact crushing

When utilized correctly, impact crushers are absolute rockstars! They produce some of the highest value, highest quality material in the aggregates industry

Sentry HSI Videos

NEW Sentry® HSI - CONEXPO CON/AGG 2020 Preview

Mike Schultz provides a pre-CONEXPO overview for a crusher useful to quarry or recycle applications.

Sentry™ Horizontal Shaft Impactor Animation

Animation showing the features of the Sentry HSI Horizontal Shaft Impactor crusher.


2-Year / 6,000 Hour

The Sentry HSI comes backed by a rock-solid 2-year / 6,000-hour warranty against manufacturer defects.

man arms crossed 400h
stock inventory mockup laptop - front page

Stock Inventory

Most of the time, we rely on our dealers to stock Superior equipment. However, we typically have a small amount of factory stock.

Have questions? Need a quote? Complete the form below and we will follow up shortly.

Request More Info | SENTRY HSI

See our privacy policy.

Service & Parts

We always have been and always will be a privately-owned company. That means we can add more employees to our customer service team without Wall Street breathing down our neck. Isn’t that the way it should be?

dealer support

They’re the same neighbors you’d trust to babysit your dog on the weekend. Our factory-trained dealers are a local connection for sales, service and parts.

phone support

Staffed by agents born to serve others, you’re welcome to call our technical service team 24/7/365. (If you call in the middle of the night, we can’t guarantee they’re in uniform!)

replacement parts

You know the old saying…”square pegs don’t fit in round holes?” It’s often the case with knock-off parts. Genuine Superior parts are forged from the same steel as our equipment

icon-angle icon-bars icon-times