Rotochopper B-66 with colorizer grinding red colored mulchRotochopper B-66 with colorizer grinding red colored mulch

StopWatch

Our patented StopWatch grinder monitoring system helps maximize uptime productivity by reducing damage from rotor impacts with tramp objects like steel or rocks.

Tramp MetalTramp Metal

How It Reduces Damage

The StopWatch system monitors rotor vibration to reduce damage from severe impacts with un-grindable objects, rotor imbalance, and other causes of damaging vibration. If an un-grindable object enters the grinding chamber, the StopWatch will sense the spike in vibration and instantly stop and reverse the infeed conveyor. By reversing the infeed conveyor, the StopWatch system lowers the chance of the rotor repeated striking the tramp object. Once the StopWatch is triggered, the infeed will remain stopped, allowing the operator to ensure the grinder is in proper condition before resuming operation.

BarkBark

Matched to Your Grinding Applications

To use the StopWatch, the operator sets an acceptable vibration level through the electronic controller. Since different feedstocks produce different vibration levels, the operator can quickly fine tune the vibration threshold to match the grinding application. For example, hardwood blocks produce more vibration than green wood chips. Adjusting the vibration threshold can help avoid unnecessary stopping of the infeed from normal operating vibration.

Rotochopper screen change systemRotochopper screen change system

Redundant Protection from Tramp Impacts

The StopWatch enhances the time-saving benefits of our patented screen change system. When the rotor strikes a large un-grindable object, the sheer pins in the screen change system allow the screen to fall away from the rotor, limiting damage. The StopWatch system adds to the convenience of this sheer pin protection by stopping the infeed conveyor when the impact occurs. 

Available for

B-66Grinder

  • UP TO 1050HP
  • 65-95,000lbs
  • 66" x 36" Throat Opening
  • Diesel Engine

Our largest and most versatile grinder, the B-66 offers high volume precision grinding capacity for a broad range of feedstocks.

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B-66 EGrinder

  • UP TO 1,000HP
  • 59,000lbs
  • 66" x 36" Throat Opening
  • Electric Motor

The B-66 E electric grinder offers unparalleled efficiency and uptime for facilities that need high volumes of engineered fiber products.

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FP-66Grinder

  • UP TO 630HP
  • 57,000lbs
  • 66" x 26" Throat Opening
  • Diesel Engine

The FP-66 offers high-volume grinding features for companies that need “Perfect In One Pass” efficiency with mid-range horsepower.

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EC-366Grinder

  • UP TO 500HP
  • 28,000lbs
  • 66" x 18" Throat Opening
  • Electric Motor

The EC-366 sets the standard for mid-sized electric grinders with customer-focused engineering and “Perfect In One Pass” grinding efficiency.

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MC-266Grinder

  • UP TO 540HP
  • 43,000lbs
  • 66" x 18" Throat Opening
  • Diesel Engine

The MC-266 is a highly portable yet full-featured grinding solution that brings “Perfect In One Pass” convenience for diverse feedstocks.

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EC-256Grinder

  • UP TO 400HP
  • 28,000lbs
  • 56" x 18" Throat Opening
  • Electric Motor

Slightly narrower than the EC-366, the EC-256 is designed to provide the same grinding precision and uptime for lower volume applications.

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