Mossberg & Granville 9" x 6" Heavy-Duty Power Industrial Breakdown Rolling Mill No. 5

EQUIPPED WITH:

• Twin screw downs
• Heavy duty cast iron stand
• Start/stop/Jog controls 

Key Components & Breakdown

A breakdown mill like the No. 5 is designed with high-torque mechanical reduction to manage the immense pressure needed to crush and reduce the gauge of thick metals. Its core features include:

• The Roll Stand (2-High Configuration):
• The heart of the mill consists of two heavy-duty, hardened steel rollers placed vertically one above the other.

Roll Adjustment: Handwheels and massive screws at the top of the mill housing are used to adjust the gap (or "bite") between the rolls. This allows the operator to precisely control the thickness of the metal with each consecutive pass.

Roll Bearings: What made Mossberg machinery legendary was the application of anti-friction roller bearings on the roll necks, which drastically increased efficiency and prevented the machine from overheating under massive loads.

The Frame: The cast iron or cast steel frame is designed to absorb the intense outward, separating force of the metal being flattened, keeping the rolls perfectly parallel to avoid distorting or waving the metal sheet.

These classic power mills are renowned in industrial and metallurgical history for their advanced engineering, which utilized early roller bearing systems to reduce friction, allowing for greater power transfer and precision.