Horizontal Shaft Impactor (HSI) joins Superior's growing ...
· Horizontal Shaft Impactor (HSI) joins Superior's growing group of crushers. December 22, 2019. Superior Industries, Inc. has announced that it plans to debut its brand new Sentry™ Horizontal Shaft Impactor (HSI) at CONEXPOCON/AGG 2020 . It's one of a dozen new products the company will introduce during the Las Vegas trade show in March.