Automatic Knife Grinder Machine for sharpening plastic crusher and shredder blades.

Automatic Knife Grinder

Precision. Durability. Performance. The ultimate industrial blade sharpening solution engineered with advanced German technology to keep your granulator and shredder blades razor-sharp.

  • Max Grinding Size: 1600 × 180mm
  • 0–90° Electromagnetic Chuck
  • ≤0.03mm Grinding Precision

Why Choose This Knife Grinder?

Electromagnetic Chuck

Securely holds blades with powerful magnetic force, adjustable from 0 to 90 degrees for versatile edge angles.

Intelligent Control

Frequency converter technology ensures stable, smooth head travel and adjustable speeds (0–20 m/min).

Precision Drive

Rack and gear transmission system delivers superior grinding accuracy compared to standard chain drives.

Low Noise Operation

Robust steel portal construction absorbs vibration, ensuring quiet operation and extended machine life.

Dual Feed Modes

Choose between automatic or manual feed for depth control (0.002–0.2mm) to suit your specific sharpening needs.

Easy Maintenance

Designed for quick wheel changes and simple cleaning, minimizing downtime in your workshop.

Main Technical Parameters

ParameterValue
ModelRT-1600
Max. Grinding Length × Width1600 × 180 mm
Chuck TypeElectromagnetic
Grinding Angle Adjustment0 – 90°
Grinding Head Power6.5 kW
Grinding Precision≤ 0.03 mm
Grinding Wheel Size200 × 100 mm
Head Travel Speed0 – 20 m/min (Adjustable)
Auto Feed Amount0.002 – 0.2 mm
WeightApprox. 2800 kg

Customer Success Stories

“This is by far the most reliable knife grinder we’ve used. Precision is outstanding and the service team is very responsive.”
Paul H.
Plant Manager, Greenleaf Recycling (USA)
“We ordered two units for our European facility. Installation was seamless and blade changeover is now faster than ever.”
Sophie M.
Operations Director, EcoBlade GmbH (Germany)
“Robust, quiet, and easy to operate. We have sharpened hundreds of blades with consistent results. Highly recommended.”
Richard T.
Maintenance Supervisor, Plastics Solutions Ltd. (UK)

Warranty & Global Support

1-Year Limited Warranty

All Rumtoo recycling systems include a one-year limited warranty, covering key components and providing full technical support.

Expert Installation Support

We provide professional installation services. Our experienced engineers can visit your site to assist with the complete setup and commissioning process.

Frequently Asked Questions

The RT-1600 can grind blades up to 1600 mm in length and 180 mm in width. We also offer customization for larger sizes if needed.

Yes, it is designed for a variety of industrial blades including chipper knives, granulator blades, shear blades, and guillotine knives.

We offer comprehensive support including optional on-site installation and operator training to ensure you get the most out of your machine.

All Rumtoo machinery comes with a standard 12-month limited warranty covering parts and workmanship, along with lifetime technical support.

Get a Free Quote Today

Contact us for pricing, delivery times, or customization inquiries. Our expert team is ready to assist you.

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Author: Plastic Recycling Machine - Rumtoo

Rumtoo Plastic Recycling Machinery is a premier manufacturer specializing in high-performance solutions for PET bottle and PP/PE film recycling. With over 20 years of expertise, we offer an integrated range of equipment, including advanced Washing Systems, Pelletizing Lines, Plastic Shredders, and Crushers. Our technology is specifically engineered to transform challenging waste—such as soiled LDPE films and PP non-woven bags—into high-purity plastic granules. Today, Rumtoo supports hundreds of recycling facilities worldwide, processing thousands of tonnes of plastic monthly and driving global circular economy goals.

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