Products
Metal Recycling Machine Blades
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Complete Metal Recycling Blade Packages:
Each set of metal recycling machine blades can include scrap shear blades, metal shredder blades and light metal crusher blades, so your scrap line receives a ready-to-run tooling package instead of loose, unmatched parts. -
Blade Geometry Tuned to Scrap Types:
SHJ KNIFE designs cutting edges and clearances around real scrap mixes – plate, profiles, stampings and mixed light scrap – so industrial recycling blades create consistent chip size, stable throughput and fewer overload peaks on the drive system. -
Steel Grades and Coatings Matched to Load:
We combine D2 / Cr12Mo1V1, alloy tool steels and H13 with optional tungsten carbide, Teflon-type or DLC coatings. This balance of hardness and toughness helps heavy-duty shredder blades resist edge chipping, wear and sticking under harsh recycling conditions. -
OEM-Compatible Replacement Blades:
SHJ KNIFE manufactures OEM-compatible scrap shear blades, metal shredder blades and crusher blades for many common machines used in scrap yards, steel mills and foundries, keeping machine model, blade position and tolerances on file for fast reorders and consistent performance.
Features
Metal Recycling Machine Blades
for Scrap Shears, Shredders and Crushers
Metal recycling lines live or die on blade performance. Scrap that does not cut cleanly slows the line, overloads motors and eats into profit on every ton. You also need each new set of metal recycling machine blades to drop into the existing shears, shredders and crushers without endless adjustments.
SHJ KNIFE focuses on high-impact metal recycling blades for scrap yards, steel mills and service centers. We design and manufacture scrap shear blades, cut off knives for scrap, metal shredder blades and light metal crusher blades that help you keep throughput high, chip size under control and shutdowns under a strict schedule.
How We Supports Multi-Brand Service
Supports Multi-Brand Service
SHJ KNIFE works with trading companies and local service centers that need reliable blades across many machine brands. In one place you may ship metal shredder blades, scrap shear blades and cut off knives for scrap in small, mixed batches. We keep structured drawings, steel selections and hardness ranges for each type of metal recycling machine blade, so your team can reorder with clear part identification instead of starting from zero each time. This helps you respond faster to breakdown calls, reduce disputes about dimensions or material, and build a more stable replacement program around your own customer base.
Serves Scrap Yards, Steel Mills and Foundries
For scrap yards, steel mills and foundries, SHJ KNIFE focuses on how blades behave on the line, not only on the drawing. We look at your scrap mix, equipment type and target chip size before we propose scrap shear blades, metal shredder blades or light metal crusher blades. By matching blade geometry and steel grade to real impact and contamination levels, we help your maintenance team push for longer, more predictable service life from each set of metal recycling machine blades, while keeping edge chipping, unplanned stops and torch rework under better control.
Pre-Shredding: Metal Shredder Blades and Shredder Blocks
Many metal recycling lines start with heavy pre-shredding. Here the blades see torque spikes, unknown contamination and constant shock. SHJ KNIFE supplies metal shredder blades and shredder blocks for metal recycling for single shaft and twin shaft machines. We tune tooth profile, root strength and side clearances so the rotor bites into scrap and keeps it moving without stalling the drive.
For twin shaft and double shaft systems, our recycling shredder knives use strong, compact tooth forms and impact-tough tool steels. This design helps the blades survive loose bolts, thick wall sections and occasional hard inclusions while still giving a predictable output size for downstream granulators or shears.
Scrap Shear Blades for Heavy Sections and Structural Scrap
Heavy scrap needs controlled shear rather than random tearing. The wrong scrap shear blades can chip, deform or tilt, which leads to poor cut faces and dangerous burrs.
Guillotine and Baler Scrap Shear Blades
Guillotine and baler shears cut plates, beams and compacted scrap bales. We supply guillotine shear blades and baler shear blades in tool steels tuned for impact and edge life. Each blade set keeps a straight cutting line, controls twist and helps operators maintain square, saleable scrap sections with fewer regrinds.
Alligator Shear Blades for Yard Scrap
Yard shears need flexible tools that handle many shapes on one machine. SHJ KNIFE designs alligator shear blades and other small scrap shear knives with robust edges and strong backs. These blades cut bars, pipes and small profiles without chipping easily, so your team can work through mixed scrap piles on a predictable maintenance schedule.
Cut Off Knives and Crop Shear Blades for Scrap Lines
Many mills and processing centers need precise cut-to-length operations on bars, billets and profiles. In these stations, cut off knives for scrap and crop shear blades control both dimensional accuracy and downstream handling.
Cut Off Knives for Scrap Sections and Bundles
Our cut off knives for scrap handle single sections and bundled bars. We match knife geometry to the drive and clamp system on your line so the cut stays square, even when the scrap comes in with variable hardness or surface scale. Stable cutting loads help protect gearboxes and reduce vibration.
Crop Shear Blades for Bars and Billets
For rolling mills and billet lines, SHJ KNIFE offers crop shear blades and billet crop shear blades that work at high speed and high temperature. We select alloy tool steels that resist edge wash and thermal fatigue. This lets operators keep clean crop cuts and steady length accuracy between scheduled grinding stops.
Light Metal Crusher Blades and Hammer Mill Hammers
Thin-gauge scrap such as cans, profiles and light sheet flows through crushers and hammer mills rather than through heavy shears.
We supply light metal crusher blades, metal crusher knives and hammer mill hammers tailored to aluminum and other light metals. Our designs keep enough mass to hold energy in each hit, while controlled clearances help limit fines and keep density in the target range. With the right set of light metal blades, you can feed briquetters, secondary shredders or furnaces with consistent chip quality.
Blade Steel Options for Metal Recycling Machine Blades
Wrong steel grades cost money in two ways: early failure and over-specifying. Many plants either run "D2 for everything" or push to full carbide before they really need it. We work with you to balance cost per ton and risk.
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Steel option |
Best for |
Key strengths |
Typical blades |
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D2 / Cr12Mo1V1 |
Standard scrap, moderate impact |
High hardness, strong wear life, controlled chipping |
Everyday metal recycling blades, many scrap shear blades, metal shredder blades, light metal crusher blades |
|
Alloy tool steels (e.g. 42CrMo) |
Thick sections, heavy and mixed scrap |
High toughness, strong tooth root, impact resistance |
Heavy-duty scrap shear knives, large metal shredder knives on beams, plates, dense scrap |
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H13 / hot-work grades |
Hot scrap, high-temperature or abrasive lines |
Keeps strength at temperature, resists thermal shock |
H13 shear blades near furnaces, hot scrap lines, special abrasive scrap with fast wear issues |
--D2 / Cr12Mo1V1 for Standard Scrap Loads
For standard metal recycling blades with moderate impact and strong abrasion, D2-type steels work well. We use D2 tool steel blades and related grades such as Cr12Mo1V1 for many scrap shear blades, metal shredder blades and light metal crusher blades that see steady, predictable loads. High hardness supports long wear life, while careful heat treatment keeps the edge from chipping too easily.
--Alloy Tool Steels for High-Impact and Thick Scrap
When lines cut thick beams, forged sections or dense mixed scrap, impact becomes more important than pure hardness. In these jobs we use upgraded alloy tool steel blades, including grades such as 42CrMo and similar materials. These steels give heavy-duty scrap shear knives and large metal shredder knives more toughness at the core, so the blade survives mis-feeds and hard inclusions without catastrophic edge failure.
--H13 and Upgraded Grades for Hot or Extreme Cases
Some plants cut hot scrap or run blades near high temperatures. For these stations we apply H13 shear blades and related hot-work grades. H13 keeps strength at elevated temperature and handles thermal shock better than standard cold-work tool steels. In extreme and very abrasive cases, we can combine hot-work or alloy steels with surface treatments or carbide inserts after a technical review of your scrap line.
We choose D2, alloy tool steels or H13 based on scrap hardness, throughput and impact level, then fine-tune heat treatment for edge strength and toughness. For extreme wear or sticking, we can add tungsten carbide coating, Teflon-type or DLC surface treatments to extend blade life and keep material moving.
How SHJ KNIFE Supports Your Metal Recycling Blades Program
We design our service model around the way your team actually works on the floor.
- We catalog each metal recycling machine blade by machine brand, position and steel grade, so repeat orders stay consistent.
- We support OEMs, trading companies and end users with industrial replacement blades and drawing management for multiple lines in one plant.
- We reverse-engineer scrap shear blades, cut off knives and metal shredder blades from worn samples when documentation does not exist.
- We discuss your scrap mix, target chip size and maintenance schedule before we confirm a blade solution, so you know why each grade and hardness range makes sense.
This approach helps you treat blades as a controlled program instead of random one-off purchases.
FAQs about Plastic Recycling Machine Blades
Q1. How often should we replace scrap shear blades?
Blade life depends on scrap type, section size, contamination and regrinding practice. Many steel mills schedule scrap shear blades changes by tonnage and grinding allowance instead of by time. We can review your current program and suggest a safe range.
Q2. Can we regrind metal shredder blades and shredder blocks?
Yes, most metal shredder blades and shredder blocks allow several regrinds. We mark safe grinding limits and advise on grinding angles so your team keeps the cutting circle true and avoids over-thinning the teeth.
Q3. Which blades work best for light metal scrap such as cans and profiles?
Light-gauge scrap usually runs better on light metal crusher blades or hammer mill hammers with a balance of hardness and toughness. We often combine D2-type steels with optimized profiles to keep density stable and reduce fines.
Q4. What can we do to reduce chipping on cut off knives for scrap?
You can choose tougher steel grades for cut off knives for scrap, review blade clearance and clamp force, and check for unexpected hard inclusions in the feed. We help you adjust steel grade and hardness so the edge deforms in a controlled way instead of chipping.
Q5. Can SHJ KNIFE supply OEM-compatible blades if we only have worn parts?
Yes. You can send sample scrap shear blades, metal shredder knives or crop shear blades. We measure all critical dimensions, confirm material and hardness and then create a drawing for future orders.
Q6. Do you support small mixed orders for service centers?
We work with trading companies and service centers that need mixed batches of metal recycling machine blades for different models. We group orders by material and process where possible to keep costs under control and maintain stable lead times.
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