Heavy-Duty Top Grid for ZZ300X300 Shredders
Heavy-Duty Top Grid for ZZ300X300 Shredders
KINTES · Shredder wear parts since 2006
Engineered Wear Parts
for Shredders
20+
16,000 t
19,000 kg
Products, Services, and Case Studies
The product catalog, service pages, case studies, and articles are updated as soon as new content is published.
Products
Wear parts, specifications and material options.
Services
Engineering, upgrade, machining and refurbishment services.
Cases
Representative projects and condition assessments on operating lines.
Articles
Company news and practical notes on wear parts.
Inquiry
Send drawings, machine models and condition details.
Traceable Castings. Documented Performance.
Confidence in wear parts starts with evidence: the chemistry we melt, the heat treatment applied to each batch, the inspections and tests we perform, and the records that link every casting to its production and inspection history.
Supplier for Shredder OEM Partners
We can produce parts either to custom specifications or to optimized designs confirmed after evaluating your operating conditions.
Unique Traceability Code
Each casting is assigned a unique traceability code that links it to its complete production and inspection records.
MAGMA Casting Simulation
Feeding and riser designs are validated by simulation before the first pour to improve casting soundness.
In-House NDT & Mechanical Testing
In-house inspection and testing includeing MPI, UT, RT, and dye DPI. Mechanical testing covers tensile, impact, and hardness testing, and metallographic analysis is also performed in-house.
Proprietary Chemistry & Heat Treatment
Engineered material formulations are paired with controlled heat-treatment cycles to deliver consistent wear performance.
Fit for Mainstream Shredder Models
Hammers, grids, grates, and liners are available for all major shredder makes and models
Selected Wear Parts
A selection of wear parts is shown below. Product pages include specifications and available options.
Reject Door
ZZ300X300 HEAVY DUTY SCRAP SHREDDER REJECT DOOR, HIGH MANGANESE STEEL, UNIT WEIGHT 11500KG
Shredder Hammer
Full-specification hammers for mainstream shredder models worldwide, cast and forged in grades selected for the actual feed on your line.
Grids / Grates
Grids engineered for stable discharge size and higher throughput, with hole size, hole shape and discharge angle set to your circuit.
Wear Plate
Cast wear plates in high manganese and alloy steel, plus plates formed from wear-resistant steel plate for liners, walls and chutes.
Rotor Cap
Rotor protection caps and covers that shield the rotor body from direct wear, supplied as single parts or within assembled rotor sets.
Engineering Support for Wear Parts
Our service descriptions set out the engineering review, manufacturing scope, and deliverables for each order.
Custom Wear Parts
Parts built from your drawing, sample or machine model.
Material Upgrade
A better material grade for your actual wear conditions.
Operating Condition Optimization
Grid geometry and part selection matched to your operating condition.
Large Structural Machining
Heavy fabricated and machined parts up to 90,000 kg.
Equipment Refurbishment
Rotor rebuild and wear package replacement.
Case Studies from Operating Lines
Each case study describes the operating conditions, the proposed solution, and the scope of supply.
Hammer grade change for a car body shredding line
Hammer grade and profile reviewed for a line running mixed car body and light iron feed.
Grid geometry adjusted for stable discharge size
Hole size, hole shape and discharge angle adjusted to stabilise output sizing on a scrap line.
Wear package for a non-ferrous shredding circuit
Matched hammers, grids and rotor caps supplied as one wear package for a non-ferrous circuit.
Complete assembled rotor supplied after rebuild
Rotor inspected, rebuilt and delivered as a complete assembled unit with matched wear parts.
Technical Notes and Company News
Technical notes and company updates are available in the Articles section.
The Parts Everyone Overlooks: Hammer Pins and Rotor Caps
Discover why hammer pins and rotor caps are critical to scrap shredder reliability. Learn how proper inspection, wear measurement, and timely replacement help prevent rotor damage, reduce unplanned downtime, and extend equipment service life.
Casting Simulation with MAGMA for Shredder Hammer Production: Reducing Field Failure Risk through Soundness Verification
Casting simulation with MAGMA enables shredder hammer producers to predict internal shrinkage porosity and inclusion risk before production, especially at the eye and striking body where abrupt section changes create hot spots. Soundness verification, calibrated against ultrasonic or sectioning results, confirms predicted sound regions and establishes documented soundness release criteria. Together, predictive simulation and verified soundness keep defective castings out of service, reducing premature fracture, unplanned shutdowns, and economically significant field failure risk in demanding shredding and recycling operations.
Hammer Material and ELV Shredding Efficiency: A Practical Technical Note
Some operators treat shredder hammers as interchangeable consumables and read efficiency from start-of-cycle throughput. Over a full wear cycle, mass loss and edge rounding raise energy per ton and total cost per ton, so grade selection should follow the line's actual ELV feed mix rather than a catalogue hardness figure. Three evidence criteria are useful in supplier evaluation: traceability, inspection scope and engineering capability.
Grids Geometry and Downstream Sorting Efficiency
In end-of-life vehicle (ELV) recycling, grid geometry plays a critical role in determining downstream sorting efficiency. This field-tuning case examines how screen aperture, grid spacing, and material flow affect the separation of shredded vehicle residues.
Grid Geometry and Downstream Sorting Efficiency: A Field-Tuning Case from an ELV Shredding Line
Grid aperture and discharge angle set both fragment size and how well the downstream sorters perform. A field adjustment on a 45–50 t/h ELV line raised non-ferrous purity from 82% to 94% and cut eddy current rejection from 18% to 6%, with throughput loss under 5%.
Forged shredder hammers added to the global supply range
Forged hammers are now supplied alongside cast grades, giving operators another option where impact loading is severe.
Shredder Hammer Material Selection: Matching Chemistry to Impact and Abrasion
Hammer life depends on matching the material grade to impact energy and abrasive wear. A practical reference for choosing between ultra-high-strength high-manganese steel and high-strength low-alloy steel by feed composition and machine capacity.
Inside our non-destructive testing routine
Magnetic particle, ultrasonic, X-ray and dye penetrant inspection are all performed in house, alongside tensile, impact and hardness testing.
Built Around Your Feed Material
Wear behavior varies with line configuration and process conditions. Select the application closest to your operating profile to view the recommended parts and the operating conditions for which they are designed.
About GOLDSTONE
A Foundry Focused on Shredder Wear Parts
We manufacture wear parts for shredders and work with plant operators to match those parts to the conditions under which they operate. GOLDSTONE, KINTES, and 金铁石 are registered trademarks of Sichuan KINTES Technology Co., Ltd.
In-House Casting Plant
Melting, heat treatment, molding, shot blasting, and machining are all covered by a single, traceable production record.
Engineering Collaboration
Our engineers work with you to review your equipment and operating conditions, then recommend design changes to help extend part life.
Send Your Drawing or Shredder Model
Tell us the shredder model, the feed material, and the part you need. We confirm geometry, material grade, and lead time before production begins.
- OEM specification or upgraded version
- Trial samples and first-article inspection for new parts
- A traceability code and inspection records with every casting
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