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High Efficiency PR Rasper

Starch Release Rate ≥98% · Blade Change <3 min, No Tools · 15+ Year Design Life

High efficiency PR Rasper

The PR Series Rasper is the front-end powerhouse of any starch processing line. It uses a high-speed rotor (linear velocity >96 m/s) to rupture cellular walls, achieving a starch release rate of ≥98% while consuming minimal energy per ton of throughput.

Key Features:

  • Rapid Maintenance Design: Featuring an advanced clamping mechanism, the saw blades can be replaced quickly without the need for special tools. This streamlined design ensures simple operation and significantly minimizes downtime.
  • → Typical blade change: under 3 minutes. During peak season, saving 30 min per shift adds up to 180+ extra production hours per year.

  • High-Strength Rotor Assembly: The rotor is constructed from specialized alloys to provide extreme durability. It is engineered to perform reliably under high-speed, heavy-duty, and continuous production cycles.
  • Precision Manufacturing: Utilizing high-precision machining and advanced laser-cutting technology, every component is manufactured to meet the highest industry standards for dimensional accuracy.
  • Superior Cell Rupture & Extraction Rate: Operating at a linear velocity exceeding 96 m/s, the high-speed impact completely ruptures the cellular walls of the material. This ensures the maximum release of starch granules, sugars, and juice components, maintaining an exceptionally high extraction yield even at high production volumes.
  • → For a 100 TPD cassava plant, every 0.5% gain in extraction rate equals approximately 180 additional tons of starch annually.

    Performance note: ≥98% extraction rate tested with fresh cassava (25-30% starch content) at rated capacity under continuous feeding. Results vary by raw material variety and condition.
  • Premium Component Integration:
    • Bearings: Heavy-duty SKF bearings (Sweden)
    • Belts: High-performance Optibelt conveyor belts (Germany)
    • Motor: Siemens motors (Germany)
    • The integration of these world-class components ensures smooth, low-noise, and reliable high-speed operation.
  • Easy-Clean Sieve System: Equipped with a removable sieve plate, the unit allows for effortless cleaning and maintenance, ensuring optimal material throughput is maintained at all times.
  • → A clean sieve means consistent flow. Preventing screen clogging avoids throughput drops of 15-20% that often go unnoticed until the end of shift.

Model Capacity (t/h) Power (kW) Rotor Ø (mm) RPM Weight (kg) Dimensions L×W×H (mm)
MK-400 3-6 37 400 2,960 1,200 1,800×900×1,400
MK-500 6-10 55 500 2,960 1,600 2,100×1,050×1,600
MK-600 10-20 75 600 2,960 2,100 2,400×1,200×1,800

Part of a Complete Processing Line

The PR Rasper works with our Centrifugal Sieves, Hydrocyclone, and Flash Dryer to form a fully automated starch extraction line.