For customers who require the ability to process both fine and coarse material or need to perform multiple-stage grinding, the Union Process HD-01/HDDM-01 Combination Lab Attritor provides a solution. Using a single motor, frame and set of controls, the customer can mill coarser material using larger grinding media (3mm to 6mm) at lower agitator shaft speeds (200-650 RPM) using the HD mode. For submicron and nanometer range target particle sizes, the mill can be operated in HDDM mode which utilizes smaller grinding media (0.25mm to 2mm) and higher agitator shaft speeds (1500-3000 RPM).
Switching between HD and HDDM mode is easily accomplished by releasing the hinged belt guard (equipped with quick disconnects), moving the drive belt to the appropriate set of pulleys, and re-securing the belt guard. The coupling, agitator shaft, and cover can also be changed depending upon which mode the unit is being operated in.
The combination mill is available with a choice of two drive systems – an electronic variable frequency drive (explosion-proof or non-explosion-proof) or a mechanical variable speed drive (explosion-proof). The unit can be configured with metal-free contact parts when necessary and is compatible with the full line of HD-01 and HDDM-01 interchangeable parts and accessories to maximize versatility. Union Process
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