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Grinder Blade
Resharpening Services

     Before

Resharpened Blades     After

 

 


Improve Your Granulator's Overall Performance and Save Money!

The condition of your grinder bed knives and rotating knives has a key performance effect on the grinder.  Having blades that are properly sharpened will increase the efficiency (cutting rate, decrease fines, decrease noise).

Almost all makes and models of blades can be resharpened at a significant cost savings over new blades. SFP resharpens all granulator knives including bed knives, rotating fly knives, Wortex/Conair fly knives and helical knives. 

Available Models Include

 

Stationary Bed Knives and Rotating Fly Knives

  • Stationary knife blade can be sharpened individually
  • Rotating knife blades should be sent in sets for matched grinding and balancing
  • Specify machine make and type
  • Specify any minimum resharpening dimensions
  • Quick turnaround

 

 

 

 

Conair/Wortex Fly Knives 
Helical Knives

  • Diameter of the cutting circle remains unchanged
  • Special diamond grinding tools sharpen the underside of insert only
  • Includes sharpening of all 3 inserts of each rotary fly knife

 

Before

 

 

Conair/Wortex Fly Knife After Sharpening

After

 

COMMON GRANULATOR PROBLEMS

SYMPTOM

POSSIBLE PROBLEM

CORRECTIVE ACTION

 

 

 

Poor quality regrind - high % of fines

Dull Knives

Sharpen or replace with new

Increased vibration

Knives not properly gapped

Re-gap knives

Increased noise

Plugged screen

Clean screen

 

Rotor speed is to high

Change pulleys and/or motor

 

 

 

Reduced throughput

Dull knives

Sharpen or replace with new

 

Knives not properly gapped

Re-gap knives

 

Plugged screen

Clean screen

 

Rotor speed is too high

Change pulleys and/or motor

 

 

 

Rotor stalls

Dull knives

Sharpen or replace with new

 

Knives not properly gapped

Re-gap knives

 

Plugged screen

Clean screen

 

Overloading the machine

Reduce the feed rate

 

Loose or worn belts

Tighten or replace

 

 

 

Motor will not start

Safety limit switch open

Check all limit switches

 

Blown fuse or breaker

Replace or reset

 

 

 

Regrind collection bin overfill

No high level indicator

Install

 

High level indicator broken

Replace

 

Vacuum line plugged

Check vacuum evacuation system

 

 

 

 


 

 


 

 


Click here for information concerning 
New Replacement Granulator Knife Blades.


Manufacturers of High-Quality
Products for the Plastics Molding Industry

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800-627-1033

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