Products
Rapid Granulator & Crusher Blades Replacement
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Aftermarket Replacement Blades (Fit for Rapid Machines):
SHJ KNIFE supplies aftermarket **replacement blades for Rapid granulators and crushers** used in plastic recycling. Buyers often search “brand + blades” when they need a fast maintenance match. We support that intent with drawing-ready service, without claiming OEM origin or affiliation. -
Granulator Blades and Crusher Knives in One Place:
We cover key knife positions for uptime. For granulators, we supply rotor knives, bed knives, and matched knife sets. For crusher stages, we supply knife sets built to your mounting points and working load. -
Fitment Built on Hole Patterns and Geometry:
Size alone does not confirm fit. Hole spacing, countersinks, thickness, and edge geometry decide the match. Send a drawing (PDF/DWG/DXF), a worn sample, or measured photos with hole close-ups. We confirm the spec summary and quote with clear lead time. -
Cutting Geometry That Keeps Output Stable:
Clearance, edge angles, and tip profiles affect cut quality, noise, and load. We focus on consistent hole layout, clean contact surfaces, and uniform edge geometry across a full set, so your line keeps a steady cut after replacement.
Features
Rapid Granulator & Crusher Blades Replacement
Maintenance teams often search the fastest way they know. They type a brand name and "blades" or "knives." They want a part that fits and gets the line back online.
SHJ KNIFE supplies aftermarket replacement blades for Rapid granulators and crushers used in plastic recycling. We support repair cycles, planned shutdowns, and repeat orders. You can send a drawing, a worn blade, or measured photos. We confirm the critical details and quote with clear lead time.
Need a quick quote? Send knife type, quantity, and photos of the holes and cutting edge.
Knife Types for Rapid Machines
Most Rapid granulators run on two core blade types: Rotating Blades (RK) and Bed Blades (BK). Plants usually replace them as a pair to keep clearance stable and cutting consistent.
- Rotating Blade (RK)
- Bed Blade (BK)
- Matched blade sets for routine maintenance and rebuilds
Popular Rapid Blade Sets (Aftermarket Replacement)
| Rapid Model | Rotating Blade (RK) | Bed Blade (BK) |
| 1012K | 1012K-RK | 1012K-BK |
| 1018K | 1018K-RK | 1018K-BK |
| 1024 | 1024-RK | 1024-BK |
| 1224 | 1224-RK | 1224-BK |
| 1824 | 1824-RK | 1824-BK |
| 1831 | RAP1831-RK | RAP1831-BK |
| 3560 | 3560-RK | 3560-BK |
We support many more Rapid models and blade codes beyond this short list. If you don't see your model here, send the nameplate info, a drawing, or clear photos of the blade holes and edges. We will confirm fit and quote quickly.
Quick note: Size helps, but hole spacing and countersinks decide fit. Share close-up photos of the holes and cutting edge to speed up confirmation.
Rapid Crusher Knife Sets (If Your Line Uses a Crusher Stage)
Some recycling lines add a crusher step for specific scrap types. If your system uses crusher knives, we can build replacement sets from a drawing or sample.
Crusher knife sets
Custom hole patterns and dimensions
Fitment & Compatibility
Fit does not come from size alone. Hole spacing, countersinks, thickness, and edge geometry decide the match. To confirm replacement blades for a Rapid machine, send one option below:
- Knife drawing (PDF, DWG, or DXF)
- Worn blade sample
- Measured photos (front, back, and hole close-ups)
Also tell us where the knife works:
- Granulator rotor or bed
- Crusher set position
- Quantity per set and number of sets
We review the details, confirm the spec summary, and send a quote.
Cutting Geometry That Matters
Small geometry choices change how your machine cuts. Clearance, edge angles, and tip profiles affect flake quality, noise, and load.
We focus on the parts that keep cutting stable:
- Consistent hole layout and countersinks
- Clean contact surfaces for mounting
- Uniform edge geometry across a full set
If your output changed over time, share photos of wear and regrind results. We can match your current geometry or adjust it toward your target.
Material Options for Your Plastic Stream
Your plastic stream controls knife wear. Film can smear and heat the edge. Rigid regrind hits harder. Mixed scrap adds grit that eats the bevel.
Tell us what you run and what fails first today. Do you see rounding, chipping, or heavy buildup? Once we know the failure pattern, we can recommend a steel and heat treatment direction that fits your line.
If you want longer time between changes, tell us. If you want lower cost per set with steady output, tell us. We will tune the material plan to that goal.
FAQs
1. Do you sell original Rapid blades?
No. We supply aftermarket replacement blades for Rapid machines. We do not claim OEM origin or affiliation.
2. Can you supply both granulator blades and crusher knives?
Yes. We support granulator rotor and bed knives, plus crusher knife sets.
3.What confirms fit the fastest?
A drawing works best. A worn sample also works well. Measured photos can work if you show hole details clearly.
4. Can you build blades from a worn sample?
Yes. Send the sample and tell us what you want to improve. We can match the design or adjust geometry based on your target.
5. What affects blade life the most?
Scrap type, contamination, clearance settings, and sharpening quality all matter. Share your wear pattern and we will recommend a practical path.
6. What lead time should I expect?
Lead time depends on design and quantity. Send your files and target date. We will confirm timing in the quote.
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