With 20+ years of manufacturing expertise, Nanjing Chenrui integrates R&D, production, and global sales. We manufacture heavy-duty double-shaft, single-shaft, and four-shaft shredders, metal/tire/plastic crushers, and turnkey recycling lines, alongside in-house forged shredder blades, slitting knives, and blade sharpeners.
Double-shaft, single-shaft, four-shaft and mini shredders, crushers and recycling lines, selected for your material and capacity.
View Machines →In-house claw and square blades, 610mm tissue knives, slitting and profile blades; custom drawings, samples and alloy steels.
View Blades →Circular, straight and saw blade sharpening, with material matching, steel selection and machine configuration support.
Get a Quote →Six equipment families and six blade/sharpening families. Integrated machine-and-blade manufacturing, with tailored selection and OEM/ODM support.
Siemens main drive, heavy-duty hardened planetary reducers and welded high-strength body, with PLC reverse and overload protection. For scrap steel, rebar, appliances, IBC containers and waste, selected by material.
Details & Technical Specs
V-rotor knives, independent water-cooled hydraulic pushing at 6–12MPa, adjustable screens, NSK bearings, TTO seals and Siemens PLC. Four-edge indexable knives for purgings, pipes, rubber, film, nets and wood.
Details & Technical Specs
Single- and dual-motor versions with oil-bath gearboxes, low-speed high torque, multi-claw knives and mobile casters. Power is matched to the site. For labs, small recycling, food waste, PET, cans and PCBs.
Details & Technical Specs
Rotary-screen tire shredders handle steel-wire tires below 2000mm without debeading. Metal models use split bearing housings and octagonal shafts for 8–10cm rebar feedstock; four-shaft machines provide multi-stage shearing.
Details & Technical Specs
For inline or centralized granulation of soft/hard plastics, blocks, strips and sprues. Adjustable high-chromium tool steel knives, large flywheel, dust/vibration/noise reduction and overload auto-shutdown.
Details & Technical Specs
SUS304 PP woven-bag/PE film crushing, washing and drying lines with established electrical brands and 3–4 operators. Also ELV crushing/sorting lines and custom chambers with shafts, NSK bearings and full knife sets.
Details & Technical Specs
3/6/8/12-claw multi-shaft knives and concave single-shaft square blades. Cr12MoV, D2, SKD-11, DC53, 55SiCr, H13, HARDOX 500–550, LD and HMB steels, vacuum heat treatment and 13 precision processes.
Details & Technical Specs
Large-diameter knives for high-speed tissue, toilet paper and paper converting. Precision-ground edges with drawing/sample customization of bores, holes, thickness, steel and hardness.
Details & Technical Specs
Slitting and trimming knives for paper, film, plastic, rubber, nonwoven, foil and tape. Custom edge angles, mounting holes, thickness, dimensions and steel grades.
Details & Technical Specs
Packaging sealing/cross-cutting and serrated tear knives, plus food cutting blades for meat, fruit and vegetables. Tooth profile, mounting holes, edges and steel matched to machine, drawing or sample.
Details & Technical Specs
OEM/ODM blades made to drawings or samples, with custom profiles, holes, slots, teeth, edges and mounting dimensions for packaging, food, plastics, rubber, paper, textiles and automation.
Details & Technical Specs610mm large-diameter circular blades for high-speed cutting and slitting of tissue paper, toilet paper, nonwoven materials and paper products. Precision machining and edge grinding provide stable cutting and clean edges. Custom bore size, positioning holes, thickness, material and hardness are available according to drawings or samples.
Browse Series Products →Wear-resistant shredder blades for processing plastic, rubber, wood, film, paper, metal and industrial waste. Custom outer diameter, thickness, tooth profile, bore, material and hardness are available according to drawings or samples.
Browse Series Products →Circular cutting blades for slitting, trimming and longitudinal cutting of paper, film, plastic, rubber, nonwoven materials, metal foil and other materials. Plain, beveled, double-beveled and toothed edges are available. Custom sizes and mounting holes are supported.
Browse Series Products →Serrated cutting knives for packaging machines, designed for sealing, cross-cutting and easy-tear applications. Suitable for plastic film, laminated film, packaging bags, paper and paper-plastic materials. Custom sizes, tooth profiles, holes and slots are available.
Browse Series Products →
Custom blades for slicing, chopping, dicing, mincing and portioning meat, poultry, vegetables, frozen food and other food products. Curved blades, crescent knives, straight blades, circular knives and special-shaped blades are available according to drawings, samples or machine models.
Browse Series Products →
Wear-resistant blades for shredding and crushing plastic, rubber, wood, paper, film and other industrial waste. Custom sizes, holes, cutting edges, materials and hardness are available.
Browse Series Products →Custom-made industrial blades manufactured according to drawings or samples. Various shapes, holes, slots, serrations, cutting edges, materials and hardness options are available for packaging, food processing, plastic, rubber, paper, textile and automation equipment.
Browse Series Products →
Precision slitting blades for plastic film, laminated film, packaging film, adhesive tape, label materials and other flexible materials. Custom sizes, holes, slots, edge angles, materials and hardness are available according to drawings or samples.
Browse Series Products →
Send drawings or sample photos, dimensions, steel and hardness requirements, quantity and cutting application.
Details & Technical Specs →
JN870-F/CNC circular sharpeners (50–300/50–600mm), JNM460–JN1200 straight knife sharpeners and JN870-C automatic saw sharpeners (100–800mm), selected by blade type and configuration.
Details & Technical SpecsCircular knife sharpening equipment, including the JN870-F automatic sharpener for 50-300 mm blades and the CNC circular knife sharpener for 50-600 mm blades. Select by blade size and machine configuration.
Browse Series Products →Straight knife sharpening equipment: JNM460, JNM660, JNM700, JNM1000 and JN1200. Manual, automatic and electromagnetic configurations are available across the range. Select by blade type, size, voltage and machine configuration.
Browse Series Products →JN870-C automatic saw blade sharpeners with push-button or touchscreen control and automatic head swiveling. Suitable for 100-800 mm saw blades, including flat, L/R, 3L+1R and 3R+1L tooth patterns.
Browse Series Products →Located in Lishui District, Nanjing, Nanjing Chenrui Mechanical Technology Co., Ltd. integrates R&D, manufacturing and global sales, with over 90 employees and more than 100 sets of advanced processing and inspection equipment.
For over 20 years, we have manufactured double-shaft, single-shaft, four-shaft, metal, tire and plastic shredders, recycling lines and their core industrial blades. Senior engineers with 40+ years of experience guide on-site production to address short blade life, low output, oversized fragments and edge chipping. In-house high-torque machine structures and vacuum-heat-treated alloy blades support cost-effective recycling and industrial cutting.
Contact Us
Matched to your material and operating conditions, from feed and output to drive power and cutting tools.
Metal/double-shaft shredders, ELV crushing and sorting lines, and impact-resistant HMB/LD claw blades reduce rebar bundles and scrap steel to 8–10cm furnace feed.
Tire shredders with rotary screens and D2 wear-resistant blades handle steel-wire tires below 2000mm, including bead wires, without prior debeading.
Single-shaft shredders, PC plastic crushers and SUS304 woven-bag/film crushing, washing and drying lines.
Double/four-shaft shredders with PLC overload auto-reverse handle the size-reduction stage for appliances, bins, organic waste and medical waste.
610mm tissue circular blades, precision slitting knives and film trim blades, supported by automatic circular and straight knife sharpeners.
Drawing- or sample-based food cutting knives, packaging sealing/cutting blades, custom profiles and complete shredder chamber assemblies.
Six Manufacturing & Configuration Advantages
In-house machine and blade R&D and manufacturing reduce intermediary costs and match cutting tools to machine structure and output requirements.
Siemens main drives for 220V–660V, 50/60Hz, heavy-duty hardened planetary reducers, plus NSK bearings and TTO seals according to model.
D2, Cr12MoV, SKD-11, H13, HARDOX 500–550 and LD alloy steels, with vacuum heat treatment selected for wear and impact resistance.
Split/sealed bearing housings, rigid chambers and an independent 6–12MPa water-cooled hydraulic system on single-shaft models simplify maintenance and support continuous duty.
PLC-controlled start, stop, reverse and overload auto-reverse reduce jamming risk and protect the drive system.
Drawing/sample-based blades, chamber boxes from 200×200 and custom machine lines, supplied to 50+ countries.
Five project steps, connected with blade design, manufacturing and inspection.
Material, output size, capacity and power
Match machines, blades and line layout
Machining, blade heat treatment and assembly
Dimensions, hardness and machine operation
Delivery, installation guidance and follow-up
Share your material, target capacity or blade drawing. Our engineers will match machines, cutting tools and sharpening requirements.
Tell us the feed material and size, target output size (mm/cm), required capacity (kg/h or t/h), and local voltage/frequency (V/Hz).
Send drawings or sample photos, dimensions, steel and hardness requirements, quantity and cutting application.
Specify the blade type, size range and required machine configuration.