www.pcimag.com/articles/84499-union-process-attritor-1

Union Process: attritor

April 24, 2000
The 01-HD/HDDM is a hybrid design that combines features of the traditional 01-HD with the small media capabilities of the 01-HDD. The equipment has a variable frequency drive that allows for speeds from 400–4,000 RPM. It is available with a variety of tanks and shaft assemblies for numerous grinding and dispersing applications, including metal-free applications.