Four-Roll Crusher

Adjusting the discharge size (ranging from 0.1mm to 30mm) on a Four Roller Crusher is a precise but straightforward process. Since the machine integrates two stages of crushing, you have independent control over both the coarse and fine reduction phases:

• Upper Roller Adjustment (Coarse Stage): By adjusting the gap between the top two rollers, you control the size of the material falling into the secondary chamber. This is typically done via the adjustment bolts or hydraulic cylinders located on the machine frame.
• Lower Roller Adjustment (Fine Stage): The final product size is determined by the gap of the bottom two rollers. Narrowing this gap produces finer powder/granules, while widening it allows for larger aggregates.
• Wedge or Shim System: Most HSM models use a mechanical wedge or shim adjustment. By increasing or decreasing the number/thickness of shims, you can precisely lock the roller distance to ensure uniform output.

Expert Tip: For models equipped with a Hydraulic Adjustment System, the gap can be modified in real-time via the control panel without stopping the machine, which is ideal for production lines requiring frequent size changes.