Granulator knife sharpening service
A professional granulator knife sharpening service provided from Fernite’s ISO 9001 certified factory in Sheffield. We can recover the full sharpness of your granulator knife, ensuring the optimal performance of your granulator machine.
When using worn granulator blades, several operational and quality issues can occur, impacting efficiency, output consistency, and equipment longevity:
1. Poor Particle Quality
• Inconsistent or oversized granules: Worn blades tear rather than cut, leading to uneven particle sizes.
• Dust and fines increase: Excessive friction and shearing create unwanted fines, reducing product quality and value.
2. Increased Motor Load & Energy Consumption
• Dull blades require more power to process material, increasing motor strain and energy usage.
• This can lead to motor overheating, tripped breakers, or premature failure.
3. Higher Heat Generation
• Worn blades cause more friction, generating heat that can lead to material melting, smearing, or clogging.
• Especially problematic with heat-sensitive plastics like LDPE or PP.
4. Reduced Throughput
• Material feed may slow down due to ineffective cutting action.
• Results in bottlenecks in downstream processes or reduced hourly output.
5. Increased Wear on Screens and Bearings
• Poor cutting increases the force and vibration inside the granulator, accelerating wear on the screen, rotor, and bearings.
• Leads to more frequent maintenance and unplanned downtime.
6. Noise and Vibration
• Worn blades cause uneven cutting forces, leading to excessive vibration and noise, which may indicate internal damage or misalignment.
7. Safety Hazards
• Blade inefficiency can lead to material jams or sudden kickbacks.
• Operators may be tempted to intervene manually, increasing injury risk.
8. More Frequent Downtime
• Repeated cleaning, unjamming, or mechanical repairs due to worn blades leads to higher downtime and labor costs.
To ensure that the knives tolerances required by your granulator manufacturer are maintained, we recommend that you send your granulator knives to us as a complete set. Please let us know what type of material you process, as thinner materials often require tighter knife tolerances. Our team of professional and experienced sharpening experts will look after your knives as they do if they’re sharpening a brand new knife.
What should you expect from Fernite’s granulator knife sharpening service?
- The ability to sharpen blades of up to 6 metres in length.
- Using less rigid porous grinding abrasives for minimal-loading and cool surface sharpening means that your knife doesn’t overheat and become more brittle as a result.
- Using the correct equipment for sharpening either Carbon, Alloy, or even Tungsten Tipped granulator knife.
- On custom request, a granulator knife can be finish ground to profile.
- Sharpening and regrinding knives with any angle and profile.
- Blades reground to as good as new sharpness.
How exactly is a granulator knife sharpened?
- Professional knife sharpening is a process that involves various steps.
- Precise knife sharpening typically begins with cleaning and removing any residue, to facilitate a high-quality sharpening.
- The knives are then carefully measured and sorted to make sure that the least amount of knife material is removed. This ensures the tightest tolerances throughout the set of blades.
- To properly sharpen granulator knives, the knife is held in place and precisely rotated to match the exact angle requirements needed to meet the tolerances of the granulator machine.
- As the knife is sharpened, it is flooded with coolant to decrease heat and eliminate the risk of changing the hardness level of the material. Knife edges within a set are all ground simultaneously to a specific width to ensure optimized gap setting.
Professional blade sharpening
Follow this link to read our post about Cumberland Granulator Blades Sharpening
If you would like to get more information about our granulator knife sharpening services please click the link above or call us +44 (0) 114 244 0527. However, if you think you need to replace your knife and get a new one then read more about our granulator blades manufacture.
