Equipment
High-speed precision plastic crusher / granulator with SKD-11 tool steel knives and flat, flake, or claw rotor configurations. Available in standard and soundproof (quiet) executions for clean, uniform regrind.
Reference values for the model or models named above. The confirmed configuration, the capacity basis and the scope of supply are stated in the quotation and the drawings.
Overview
Grinds plastic runners, defective molded parts, hollow containers, and sheet scrap into uniform regrind flakes for immediate recycling.
The Plastic Crusher (high-speed precision granulator) is the universal size-reduction workhorse across injection molding, blow molding, thermoforming, and plastic recycling plants. Engineered to process rigid sprues, heavy injection runners, defective molded parts, blow-molded bottles, sheet skeleton edge trims, and pre-shredded plastic fragments, it rapidly shears bulky scrap into uniform, high-bulk-density regrind flakes (typically 8 mm to 14 mm) that can be immediately reintroduced into production extruders or injection molding machines.
Available in both standard heavy-duty central execution and fully soundproof (quiet / silent granulator) configurations, the machine adapts to both centralized recycling departments and direct beside-the-press operations where low ambient noise (< 80 dB(A)) is required. High-grade alloy tool steel knives—predominantly premium SKD-11 (JIS) / D2 (AISI) vacuum heat-treated to 58–60 HRC—ensure superior edge sharpness and wear life across standard polymers and abrasive filled compounds.
To match different scrap geometries, the cutting rotor accommodates multiple blade designs: universal Flat Blades (平刀) for general rigid plastics and sheets, Paddle / Flake Blades (片刀) for hollow containers and bottles, and Claw Blades (爪刀) for thick solid sprues and heavy lumps. Supported by an external outboard bearing housing and a high-inertia cast-steel flywheel, the crusher provides clean, low-dust shearing with high energy efficiency.
Key features
Each picture names one part of the machine and what it does for the material and the batch.
Rotary knives are arranged in a staggered V-shaped scissor cut against stationary bed blades, shearing scrap progressively from outer walls toward center. This concentrated shear action slashes peak motor draw, minimizes fines and dust, and prevents material accumulation along chamber walls.
Crafted from premium SKD-11 (JIS) / D2 (AISI) high-carbon high-chromium alloy tool steel, vacuum-hardened and cryogenic-treated to 58–60 HRC. Delivers exceptional wear resistance, impact toughness, and edge retention, with options for Cr12MoV or tungsten-carbide tipping.
Heavy dynamically balanced cast-steel flywheel on the rotor shaft stores immense rotational inertia. It absorbs instant shock loads when crushing rigid solid sprues, heavy thick runners, or dense fragments, preventing rotor stall and motor overload.
Spherical roller bearings are mounted entirely outside the cutting chamber in separate cast-steel housings, protected by multi-stage labyrinth grease seals. Eliminates resin powder ingress, prevents bearing overheating, and prolongs service life.
Gas-spring assisted upper feed hopper and drop-down screen cradle provide rapid, tool-free access to the cutting chamber. Knife gap inspection, blade changeover, and thorough color-cleaning routines can be executed in under 10 minutes.
Available in standard open-frame format or fully acoustic soundproof execution (quiet granulator). The soundproof configuration incorporates double-wall insulated damping sandwich panels and baffled curtains, keeping sound pressure < 80 dB(A) for quiet operation in close proximity to molding machines.
Material and process
Read the conditions together: a machine is selected for the material and the output, not from its name alone.
The universal high-efficiency granulating workhorse for injection molding shops, blow molding plants, thermoforming lines, and centralized plastic recycling facilities.
Processes a wide spectrum of rigid, flexible, and engineering thermoplastics, including Polypropylene (PP), Polyethylene (HDPE, LDPE), Polystyrene (HIPS, GPPS), ABS, Polycarbonate (PC), Polyamides (PA6, PA66), Polyoxymethylene (POM), PET, and PVC. Available in standard open-frame format for central granulating rooms, or acoustic soundproof execution (quiet crusher) for beside-the-press recycling directly on molding shop floors.
Equipped with application-tailored blade profiles: Flat Blades (平刀) for universal plastics, sprues, and sheet scrap; Paddle / Flake Blades (片刀) for hollow containers and bottles; and Claw Blades (爪刀) for solid lumps, heavy runners, and tough engineering resins.
High-speed precision granulator; operational boundaries include:
Accepts defective injection molded parts, cold sprues, heavy runners, blow-molded bottles, thin-wall hollow containers, sheet/film skeletal edge-trims, pipe offcuts, and pre-shredded plastic chunks.
Feeding can be handled manually via top hopper chute, automated robot arm drop directly beside injection molding presses, or continuous inclined belt conveyor. Material must be strictly free of tramp ferrous or non-ferrous metals, hardened bolts, or uncrushable solid steel contaminants (hopper magnet protection recommended).
Produces uniform, clean regrind flakes (typically 8 mm to 12 mm) with low dust and fines content, matching virgin pellet bulk handling characteristics.
Discharges directly into suction collection bins or is continuously evacuated by pneumatic blowers into cyclones, storage silos, or big-bag packing stations.
Throughput
Read a figure together with the basis below it: the same machine reaches different numbers on different materials.
0.2–1.1 Ton/Hour
Granulating capacity spans from 150 kg/h up to 2,500+ kg/h depending on cutting chamber width (400 mm to 1,600 mm), rotor knife geometry, drive motor power (11 kW to 110 kW), and discharge screen hole diameter (8 mm to 14 mm).
Throughput is governed by scrap physical thickness, toughness, and bulk density. Thin-walled thermoformed skeletal waste and blow-molded bottles grind rapidly with high volumetric bulk, whereas thick injection molded runners and rigid purgings require heavy flywheels and high inertia cutting torque.
Models
The figures are the reference values entered for each model. The model for your line is confirmed against your material and output before it is quoted.
Scroll the table sideways to read every column →
| Model | Rango de capacidad | Potencia nominal | Dimensiones | Stationary Cutter | Rotary Cutter | Mesh Size | Blade Material |
|---|---|---|---|---|---|---|---|
| NC-C400 | 0.2-0.3 Ton/Hour | 7.5 kW | 1100*860*1300mm | 2PCS | 4PCS | 8mm | SKD-11 |
| NC-C500 | 0.3-0.4 Ton/Hour | 10 kW | 1400*1000*1550mm | 2PCS | 5PCS | 10mm | SKD-11 |
| NC-C600 | 0.35-0.55 Ton/Hour | 22 kW | 1600*1250*1850mm | 2PCS | 6PCS | 12mm | SKD-11 |
| NC-C800 | 0.5-0.7 Ton/Hour | 37 kW | 2100*1520*2250mm | 4PCS | 9PCS | 12mm | SKD-11 |
| NC-C1000 | 0.8-1.1 Ton/Hour | 55 kW | 2400*1860*2650mm | 4PCS | 9PCS | 14mm | SKD-11 |
Scope of supply
The quotation states the scope for the confirmed configuration; the groups below describe how a supply is normally split.
Installation planning
These are the connections the machine and the line around it have to agree on before the layout is fixed.
Mechanical: Rigid free-standing steel base frame on anti-vibration leveling mounts; bottom discharge collection bin or standard pneumatic suction evacuation flange (DN100–DN160).
Electrical & Automation: Three-phase industrial power supply to the machine control cabinet; safety interlock limit switches on hopper and screen cradle.
The buyer provides a reinforced level concrete floor, primary electrical power supply connected to the main isolator switch, and downstream material handling bins or blower connections.
Spare parts
The parts that wear in normal service, and the spares worth keeping on site. How often a part is replaced depends on the material and the duty the machine runs, so the basis is confirmed for each machine.
Inspect cutting edge sharpness weekly; resharpen every 300–800 operating hours depending on polymer abrasiveness; replace when resharpening reaches the minimum blade width limit.
Precision-machined rotary blades available in Flat, Flake/Paddle, and Claw configurations. Standard metallurgy in premium SKD-11 / D2 (58–60 HRC). Recommended to hold at least one complete sharpened spare set in inventory to avoid production downtime during regrinding cycles.
Flip to fresh cutting edge when worn; resharpen simultaneously with rotating knives.
Heavy-duty counter-bed knives secured to the machine frame. Engineered with dual or quadruple reversible cutting edges; can be flipped or reground simultaneously with rotor knives to maintain optimal shearing tolerance (0.2–0.4 mm).
Inspect monthly for hole ovalization or fatigue cracking; replace when perforation wear causes oversize flake bypass.
Rigid discharge screen determining regrind particle size (standard 8 mm, 10 mm, 12 mm, or 14 mm). Easy slide-out cradle for rapid color cleanout.
Check tension and surface cracking every 500 operating hours; replace as complete matched sets when stretched or cracked.
Multiple wedge drive belts transferring power from the high-torque motor to the cast-steel flywheel. Always replace as a complete factory-matched set to guarantee uniform tension and slip-free power transmission.
Inspect for mechanical tears or chemical swelling every 6–12 months.
For soundproof / quiet crusher models: heavy-duty silicone rubber baffle curtains and chamber acoustic dampening pads that absorb impact resonance and prevent scrap bounce-back.
Blades, screens and other normal consumables are outside the standard warranty. How a spare part is identified and ordered is set out under Warranty & Spare Parts.
Selection
Work through what you already know. The rest is settled in the conversation, not before the first message.
Selecting the optimal plastic crusher configuration requires matching blade profile, blade metallurgy, machine acoustic build, and drive power to your material characteristics and factory layout:
Request a Quote A model name, a material or a drawing is enough to start.
Indíquenos el material, el proceso y el resultado que necesita lograr. Los detalles técnicos se pueden completar más adelante junto con nuestro equipo de ventas.
