Frequently Asked Questions

Our high-speed braiding machines can reach up to 800 rpm (revolutions per minute), depending on the model and material. The FY-16 series runs at 200-400 rpm, the FY-24 series at 400-600 rpm, and the FY-48 series can reach up to 800 rpm with specific configurations. Actual operating speed is adjusted based on yarn material, diameter, and braiding density requirements to ensure optimal quality and stability.

The number of carriers determines production capacity and application scope. 16-carrier machines are compact, ideal for small-to-medium batch production of shoelaces, decorative cords, and thin cables. 24-carrier machines offer higher efficiency for large-volume orders, capable of braiding thicker materials and more complex structures. They also feature advanced tension control and automation like auto-winding and breakage detection. Selection depends on product specs, volume needs, and budget.

Our machines handle a wide range of materials including: synthetic fibers (polyester, nylon, PE, PP), natural fibers (cotton, hemp, silk), high-performance fibers (aramid, carbon fiber, fiberglass, UHMWPE), metal wires (stainless steel, copper, tinned copper), and elastic materials (spandex, rubber). Different materials require specific carriers and tension settings—our engineers can provide customized solutions for your exact materials.

Standard configuration is three-phase 380V/50Hz, with power ranging from 1.5kW (small 8-carrier) to 7.5kW (large 96-carrier). We also offer voltage customization for 220V/60Hz (US, Japan) or 415V/50Hz (India) standards. All machines include variable frequency drives that automatically adjust power output based on load, delivering significant energy savings.

Spindle speed directly affects braiding density, yarn uniformity, and surface quality. Too low results in insufficient density and loose structure, compromising strength and appearance; too high causes increased tension fluctuations and yarn wear, leading to higher breakage rates and uneven density. Optimal speed must match material properties, wire diameter, and braiding structure—PE fishing line typically uses 200-350rpm, shoelace braiding 250-400rpm, while fiberglass sleeving requires 120-180rpm due to material brittleness. Our machines feature closed-loop servo speed control maintaining ±0.01% accuracy across the full speed range, ensuring consistent product quality.

Braiding pitch is the axial distance between adjacent crossover points on a braided product, a core parameter controlling braiding density and line structure. The relationship with braiding angle is: Pitch = π × Diameter × cot(Braiding Angle). Smaller pitch means higher density and firmer structure; larger pitch means lower density and softer feel. Adjustment methods include mechanical (changing pitch gears) and electronic (servo system programming). Mechanical adjustment has limited range but lower cost; electronic allows direct input of target pitch on the control panel, with the servo system automatically calculating motion trajectories, offering wide adjustment range and high precision (±0.1mm). Our mid-to-high-end models all use electronic pitch adjustment, supporting dynamic pitch variation during braiding for special products requiring gradient density.

Open-loop systems (traditional VFD + asynchronous motor) only send speed commands without detecting actual operating status. When load changes or grid fluctuates, actual speed deviates from the set value, causing uneven braiding density. Closed-loop servo systems use high-resolution encoders (typically 17-23 bit) to monitor motor speed and position in real time, automatically adjusting output after comparing with set values, forming a "command-execute-detect-correct" control loop. Key differences: 1) Speed accuracy: open-loop ±1% vs closed-loop ±0.01%; 2) Dynamic response: closed-loop acceleration time can be 1/5 of open-loop; 3) Energy efficiency: closed-loop servo efficiency 93-96% with energy regeneration, saving 15-25% vs open-loop; 4) Intelligence: closed-loop monitors operating parameters in real time for predictive maintenance. For high-end products like PE fishing line and medical catheters, closed-loop servo is essential.

The tension control system is the core subsystem ensuring braiding quality. Its working principle: tension sensors monitor each yarn's tension in real time, feeding data to the controller which adjusts carrier brakes or servo motor output to maintain tension within the set range. The system has three components: 1) Tension detection—strain gauge or piezoelectric sensors with ±0.1N accuracy; 2) Control algorithm—PID or fuzzy control calculating adjustment based on tension deviation; 3) Actuator—magnetic powder brake, servo motor, or pneumatic brake. Our machines support independent tension control (one loop per carrier) and group tension control (4-8 carriers per group). Independent mode offers higher precision (tension variation ≤3% between carriers) for high-end products; group mode is more cost-effective for general industrial products. Tension setting range is typically 0.3-5.0N, adjustable on the control panel based on material properties.

Automatic thread breakage detection monitors each carrier's yarn status in real time, triggering an alarm and automatic stop at the instant of breakage to avoid producing large amounts of scrap. Two main implementation methods: 1) Photoelectric detection—infrared beam sensors installed on the yarn path; normal braiding blocks the beam, breakage allows light through triggering a signal. Fast response (<10ms), low cost, but may be affected by transparent or light-colored yarns; 2) Tension-based detection—monitors tension values, detecting breakage when tension drops to zero or fluctuates abnormally. Suitable for all materials but higher cost. Our mid-to-high-end models use dual redundant photoelectric + tension detection, ensuring 100% breakage detection rate. The detection system links with the main controller, automatically recording breakage location, time, and carrier number for quick troubleshooting, while also统计ing breakage frequency by carrier to support maintenance planning.

Yes, multi-layer braiding structures can be achieved through special process configurations. Common multi-layer structures include: 1) Double-layer braiding—inner layer with fine yarn at small angle for softness and strength, outer layer with coarse yarn at large angle for abrasion resistance and protection, opposite braiding directions enhance anti-twist performance; 2) Core-sheath braiding—a core (steel wire, optical fiber, or hose) is covered during braiding forming a "braid-core-braid" sandwich structure; 3) Gradient density braiding—dynamic pitch adjustment via servo system creates sections of high and low density. Multi-layer braiding typically requires: double-layer carrier seats (inner and outer carriers controlled separately), increased braiding heads, and core wire feeding device. Our FY-32 and FY-48 series support double-layer braiding configuration, and FY-48 series can be equipped with triple-layer braiding module. Multi-layer braiding is widely used in marine cables, oil pipeline reinforcement layers, and high-end safety ropes.

PE fishing line braiding demands extremely high equipment precision. We recommend 16-24 carrier high-speed braiding machines with these core configurations: 1) High-precision closed-loop servo spindle—speed control accuracy ±0.01% for uniform braiding density; 2) Precision tension control—per-yarn tension 0.8-1.5N, inter-carrier variation ≤5%; 3) Pre-heating device—heating PE fiber to 60-80°C before braiding to reduce residual stress; 4) Constant-tension take-up—take-up tension linked to braiding speed to prevent loose inner layers and tight outer layers. Carrier selection: 16 carriers for 4-strand/8-strand lines, 24 carriers for 12-strand/16-strand lines. Recommended speed 200-350rpm, braiding angle 30°-45°. PE fiber has smooth surface (friction coefficient 0.15-0.25), requiring ceramic guide wheels and specially coated carrier eyes to reduce wear. Our FY-16S and FY-24S models are specifically designed for PE fishing line, equipped with all the above features, and have been operating stably at multiple fishing tackle export enterprises.

Fiberglass sleeving braiding requires special attention to material brittleness and insulation requirements. Core process points: 1) Material pretreatment—glass fiber yarn must undergo sizing treatment (silane coupling agent or paraffin emulsion, 1.5-3.0% solids), increasing friction coefficient to 0.35-0.45, drying at 80-100°C; 2) Low tension control—per-yarn tension strictly controlled at 0.3-0.8N, as glass fiber breaks when bending radius <3mm; 3) Low speed—carrier speed 120-180rpm to avoid tension fluctuations from centrifugal force; 4) Braiding angle 38°-42°, where longitudinal expansion rate is minimal (2-4%); 5) Double-layer braiding—inner layer 300-450tex fine yarn at small angle (35°-38°), outer layer 600-900tex coarse yarn at large angle (42°-45°), opposite directions. Post-processing: 380-420°C heat setting 30-60 seconds (stress relief), surface coating (Class F polyurethane/Class H silicone/Class C PTFE), curing 150-200°C/20-40 minutes. Quality testing must pass voltage withstand (2kV/1min), insulation resistance (≥10¹² Ω·cm), flame retardancy (UL VW-1) tests.

Shoelace braiding machines, while essentially high-speed braiding machines, have distinct differences in function and process requirements: 1) Color pattern changing—shoelaces need rich colors and patterns, requiring multi-color yarn quick switching, typically with 16-32 color auto-change devices; 2) Flat tape forming—shoelaces are usually flat cross-section, requiring special flattening and setting mechanisms with heated press rollers (120-160°C) at the braiding exit; 3) Metal tip installation—some shoelaces need metal aglets, requiring automatic tipping machines or预留 interfaces; 4) Carrier count—shoelaces typically use 16-24 carriers with larger braiding angle (45°-55°) for softer feel; 5) Winding—shoelaces are usually wound in pairs, requiring dual-channel synchronous take-up. Additionally, shoelace materials are mostly polyester or cotton, with relatively relaxed tension requirements (1.0-2.5N), but requiring fast changeover (<5 minutes). Our FY-16X and FY-24X models are specifically designed for footwear materials, supporting 48-color change and automatic flat tape forming.

Charging cable (USB-C, Lightning) braiding outer layers mainly serve protective and aesthetic purposes, with special equipment requirements: 1) Core protection—charging cables contain precision conductors and shielding that must not be damaged during braiding, requiring soft core feeding tubes and buffered tension control (0.5-1.2N); 2) Fine gauge adaptation—outer diameter typically 2-5mm, requiring small-diameter braiding heads and precision guide wheels (diameter ≤20mm); 3) High-speed production—consumer electronics demands high volume, requiring braiding speed ≥100 meters/hour, typically using 24-carrier models at 280-350rpm; 4) Material compatibility—outer layers commonly use nylon 66 or PET braided yarn, confirming carrier eye and guide wheel materials won't scratch yarn; 5) Surface post-treatment—braided products may need flame retardant coating or hand-feel finishing agents. For premium braided data cables (Apple-style), automated front-end and back-end lines for cutting, stripping, and soldering are needed. Our FY-24C charging cable dedicated model features core tension buffering system and small-diameter braiding head, already in use at multiple 3C accessory manufacturers.

The core challenge in elastic band braiding lies in the high elongation and recovery characteristics of elastic yarns (spandex, rubber thread). Key handling points: 1) Dedicated carriers—elastic yarn requires covering spindles that use spandex as core yarn covered with protective nylon or polyester outer layer, covering ratio typically 1:2 to 1:3; 2) Tension compensation—elastic yarn continuously retracts during braiding, requiring spring or pneumatic tensioners for dynamic compensation, tension range 0.8-2.0N adjusted in real time based on retraction rate; 3) Pre-stretch—elastic yarn is pre-stretched to 120-150% of original length before braiding, retracting after braiding to form elastic structure; 4) Temperature control—elastic materials are temperature-sensitive, workshop should maintain 20-25°C to avoid high-temperature elastic degradation; 5) Take-up tension—take-up system needs gradient tension function, outer layer 10-15% lower than inner layer to prevent excessive compression. Elastic recovery rate requirement is ≥85% (recover after 100% stretch for 1 minute), requiring precise control of braiding density and elastic yarn content. Our FY-24E elastic band dedicated model features elastic yarn carrier groups and tension compensation system, achieving elastic recovery rate above 90%.

Insulation wire braiding voltage class determines material selection, braiding density, and post-processing. Main class requirements: 1) Low voltage (≤1kV)—PVC or XLPE insulated core with fiberglass or polyester protective braid outer layer, braiding coverage ≥85%, no special post-treatment needed; 2) Medium voltage (1-35kV)—EPR or silicone rubber insulation with double-layer semiconductor + insulation braiding, coverage ≥90%, must pass power frequency withstand test (2.5U₀+2kV, 1 minute); 3) High voltage (66-220kV)—cross-linked polyethylene insulation with multi-layer braiding (semiconductor + insulation + metal shielding), coverage ≥95%, must pass lightning impulse test (±550-1050kV) and partial discharge test. Temperature classes: Class A (105°C) uses PVC sleeving, Class F (155°C) uses polyurethane-coated fiberglass, Class H (180°C) uses silicone-coated fiberglass, Class C (>220°C) uses PTFE coating. Our machines can be configured with multi-layer braiding modules to meet full-series insulation wire production from low to high voltage.

Yes. Carbon fiber composite braiding is a key process in aerospace, automotive, and sports equipment, with special equipment requirements: 1) Low tension control—carbon fiber is brittle and breaks easily, per-yarn tension must be controlled at 0.5-1.0N, recommend pneumatic tensioners or magnetic powder brakes; 2) Anti-static—carbon fiber is conductive and generates static electricity during braiding, requiring ionizing bars and conductive grounding, workshop humidity 55-65%RH; 3) Dedicated yarn guides—carbon fiber hardness accelerates wear on ordinary metal guide wheels, requiring ceramic or hard alloy coated guide wheels and diamond-coated carrier eyes; 4) Heat setting—after braiding, hot pressing in mold is needed (typically 120-180°C, pressure 0.5-2.0MPa) to cure resin matrix; 5) Mandrel system—3D braiding requires removable mandrels with release agent coating. Carbon fiber braiding machines typically use 24-48 carriers, braiding angle 15°-45°, coverage ≥95%. Our FY-24CF and FY-48CF carbon fiber dedicated models feature anti-static systems and ceramic yarn guides, successfully applied in drone arms, automotive drive shafts, and bicycle frame production.

Medical catheter braiding has extremely high requirements involving patient safety, with strict equipment and process standards: 1) Clean environment—braiding workshop must achieve ISO Class 8 (100,000) cleanliness, strictly controlled temperature and humidity (20±2°C, 45±5%RH) to avoid particulate contamination; 2) Material compatibility—commonly stainless steel wire (304V or 316LVM, 0.02-0.05mm diameter) or nitinol wire (superelastic), outer braid of PU or PEBAX, all materials must pass USP Class VI biocompatibility testing; 3) Ultra-precision tension—metal wire tension controlled at 5-20mN, requiring micro-tension sensors and precision servo brakes; 4) Extremely small diameter—catheter OD typically 1-3mm, requiring micro braiding heads (diameter ≤15mm) and microscope-assisted threading; 5) Traceability—all braiding parameters (tension, speed, pitch) must be fully recorded and linked to batch numbers, retention period ≥product shelf life +1 year. Common braid structures: single flat wire braid (1×1, 80-90% coverage) provides pushability and torque response, double flat wire braid (2×2) enhances kink resistance. Our FY-16M medical catheter dedicated model features micro-tension control and clean environment adaptation kit, certified to ISO 13485 medical device quality management system.

Pricing varies by carrier count, configuration, and automation level. Entry-level 8-16 carrier models range from $8,000-$15,000; standard 24-32 carrier models from $18,000-$35,000; high-end 48-96 carrier or fully automatic lines from $40,000-$120,000. We offer flexible payment terms including deposit+balance before shipment and Letter of Credit (L/C). Volume discounts are available—contact our sales team for a detailed quote.

Standard models have a 15-25 working day lead time; custom configurations require 30-45 working days. For large orders (5+ units), delivery schedules are negotiated based on production planning. We maintain inventory of core components for popular models like FY-16 and FY-24 to shorten lead times for standard configurations. Contact our sales team for expedited production options on urgent orders.

Yes, we support multiple payment methods. For international trade, we accept irrevocable L/C at sight and T/T wire transfer, with standard terms of 30% deposit and 70% balance against B/L copy before shipment. For long-term partners or large orders, installment plans can be negotiated. We work with export credit agencies and can assist with export financing applications.

Evaluating braiding machine cost-performance ratio should not focus solely on initial purchase price, but consider Total Cost of Ownership (TCO). Formula: TCO = Purchase Cost + Energy Cost (5 years) + Maintenance Cost (5 years) + Downtime Loss (5 years) - Residual Value. Key evaluation metrics: 1) Per-meter capacity investment—equipment price ÷ theoretical braiding speed (m/hour), lower is better, 16-carrier about 3,000-4,000 yuan/(m/hour), 48-carrier about 2,000-2,700 yuan/(m/hour); 2) Energy efficiency—servo models save 15-25% vs VFD models, calculated at 20 hours/day and 0.8 yuan/kWh, saving 75,000-125,000 yuan in electricity over 5 years; 3) Scrap rate—high-precision models can reduce scrap from 3-5% to below 1%, at 5 million yuan annual output saving 100,000-200,000 yuan/year; 4) Maintenance cost—genuine spare parts supply and remote diagnostics can reduce maintenance costs 30-50%. We recommend creating a 5-year TCO comparison table before making decisions.

Choosing between used and new machines depends on budget, capacity needs, and technical requirements. Used machines offer lower prices (typically 30-60% of new) and immediate availability, but risks include: 1) Uncertain remaining service life, key components (bearings, motor, control system) may be near overhaul period; 2) No warranty or short warranty; 3) Outdated technology lacking modern automation (servo drive, auto breakage detection); 4) Difficult spare parts supply, especially for imported brands. New machine advantages: 1) Full warranty (typically 12-18 months); 2) Latest technology with low energy consumption and high precision; 3) Factory technical support and training; 4) Customizable configurations. Our recommendation: if budget allows and long-term stable production is the goal, choose new; if budget is limited or for过渡/试 production, consider used machines under 3 years old, but have a professional technician thoroughly inspect spindle accuracy, electrical system, and mechanical wear. For enterprises with annual capacity needs exceeding 500,000 meters, we strongly recommend buying new to ensure equipment reliability and product quality stability.

In addition to the equipment purchase price, consider these hidden costs: 1) Installation and commissioning—some suppliers quote without installation, on-site costs about 5,000-15,000 yuan/unit including travel; 2) Spare parts kit—recommend purchasing a wear parts kit (carriers, guide wheels, bearings, belts) with initial purchase, cost about 5-10% of equipment price; 3) Training—operator training is usually free, but multiple trainees or advanced process training may incur extra charges; 4) Electrical adaptation—if local voltage/frequency differs from equipment standard, transformer and VFD modification costs about 3,000-8,000 yuan; 5) Transport insurance—marine cargo insurance typically 0.3-0.5% of cargo value; 6) Certification fees—CE, UL export certification if handled by supplier, about 8,000-20,000 yuan/item; 7) Software upgrades—some brands charge for control system software upgrades. We recommend requesting a turnkey price from suppliers that includes all the above costs to avoid unexpected expenses.

Braiding machine rental suits specific scenarios but is generally less cost-effective than purchasing. Rental advantages: 1) Low initial investment—no full payment upfront, monthly rent about 2-4% of equipment price; 2) High flexibility—scale up or down based on order fluctuations; 3) Low risk—avoid large investment when trying new models or materials. Rental disadvantages: 1) High long-term cost—over 3 years, total rent typically reaches 80-120% of equipment price; 2) No asset ownership—equipment returned after lease, no fixed asset formation; 3) Usage restrictions—lease contracts usually limit modifications and product changes; 4) Ambiguous maintenance responsibility—some contracts require lessee to bear repair costs. Applicable scenarios: 1) Short-term orders (<6 months) or seasonal production; 2) New market trial production, verify demand before investing; 3) Startup enterprises with cash flow constraints. Our recommendation: enterprises with stable annual capacity exceeding 300,000 meters should purchase directly; short-term projects or trial production can consider rental, but carefully review contract terms especially maintenance responsibility and early termination clauses. We currently offer a "rent-to-own" program—first 12 months at rental rates, then option to buy (rent paid deducted from purchase price) or return equipment.

We provide a 12-month warranty from the date the equipment arrives at the destination port or customer factory (whichever is earlier). Coverage includes failures due to material or manufacturing defects, with free replacement parts and remote technical support. Electrical components like motors and VFDs carry an 18-month warranty. Beyond the warranty period, we offer lifetime paid repair services and supply genuine spare parts at cost.

Yes, we provide comprehensive installation, commissioning, and training. Our standard service package includes: (1) remote video guidance within 48 hours of arrival; (2) on-site engineer dispatch available (travel expenses borne by customer); (3) free operator training covering machine operation, daily maintenance, troubleshooting, and parameter setup; (4) Chinese and English manuals plus video tutorials. After training, operators should be able to independently operate and perform basic maintenance.

We maintain inventory of common spare parts (carriers, yarn guides, belts, bearings, etc.) that ship within 3-5 working days. Less common or custom parts require 10-15 working days. We recommend ordering a wear parts kit with your machine to handle unexpected failures. All parts are genuine OEM components ensuring perfect compatibility. We offer global express shipping (DHL/FedEx/UPS) with air freight available for urgent parts.

Braiding machine overhaul cycles depend on usage intensity, maintenance quality, and material characteristics. General reference standards: 1) Spindle bearings—with good maintenance (regular lubrication, cleaning), design life about 20,000-30,000 hours, typically comprehensive inspection every 15,000-20,000 hours, replacement when necessary; 2) Cam mechanism—under high load, inspect wear every 8,000-10,000 hours, replacement cycle about 12,000-15,000 hours; 3) Electrical system—VFD and servo drives life about 30,000-50,000 hours, usually no major overhaul needed, but parameter calibration and cooling system cleaning recommended every 2 years; 4) Full machine overhaul—recommended every 5 years or 20,000 operating hours, including: disassembly and cleaning of all parts, replacement of worn bearings and seals, spindle accuracy calibration (radial runout ≤0.02mm), electrical insulation inspection, re-coating for rust prevention. Enterprises that establish and strictly enforce preventive maintenance plans can extend overhaul cycles to 25,000-30,000 hours and reduce unplanned downtime by over 70%.

The core to extending braiding machine service life is establishing a scientific preventive maintenance system. Specific measures: 1) Daily maintenance—clean surface flyings and dust each shift, check oil level and belt tension, record operating parameters (speed, tension, temperature); 2) Regular servicing—lubricate manual points weekly, check bearing temperature and vibration monthly (infrared thermometer + vibration pen), check spindle radial runout (dial indicator) and belt wear quarterly; 3) Environment control—maintain workshop temperature 20-25°C, humidity 50-60%RH, avoid corrosive gases and excessive dust, ensure good equipment grounding; 4) Standardized operation—strictly follow manual parameters, avoid overload operation and emergency stops (gradual deceleration instead), new employees must pass training before independent operation; 5) Spare parts management—stock key wear parts (carriers, bearings, belts) to avoid long-term shutdown losses from waiting for parts. Through these measures, mean time between failures (MTBF) can increase from industry average 800 hours to over 1,500 hours, and service life can extend from 10 years to 15-18 years.

Our equipment has passed multiple international certifications including CE marking (EU market access) and ISO 9001 quality management. Depending on target market requirements, we can assist with or provide documentation for UL/CSA (North America), EAC (Russia and Customs Union), SASO (Saudi Arabia), SONCAP (Nigeria), and others. All exported machines include complete English technical documentation, operation manuals, and packing lists.

We follow export-grade sea freight packaging standards: the machine body is treated with rust-preventive oil, wrapped in moisture-proof film, secured in a fumigated wooden crate with high-density foam cushioning. The crate is marked with lifting points and center of gravity for safe handling. Critical precision components (control panels, carrier assemblies) are separately packaged on shock-absorbing mounts. Marine cargo insurance is available upon request with real-time shipment tracking. After arrival, simply connect power and air supply per the manual to start operation.

Braiding machine export requires these documents: 1) Commercial Invoice—listing equipment model, quantity, unit price, total price, payment terms; 2) Packing List—detailed contents of each package, gross weight, net weight, dimensions; 3) Bill of Lading—shipping or air freight transport document; 4) Certificate of Origin—proving product origin, some countries offer tariff preferences with this; 5) Export Customs Declaration—Chinese customs export filing; 6) Technical documents—English operation manual, electrical schematics, mechanical assembly drawings, certificate of conformity; 7) Certification documents—CE certificate, ISO 9001 certificate, etc. (as applicable). Some countries have special requirements: Nigeria needs SONCAP certificate, Saudi Arabia needs SABER certification (PCoC+SCoC), Russia needs EAC conformity declaration. We provide full export documentation services—customers only need to provide receiving information and import license (if required by destination country).

Choosing a braiding machine supplier is the starting point for long-term partnership. We recommend comprehensive evaluation across these dimensions: 1) Technical capability—examine R&D investment, patent count, innovation capability, whether they offer customized solutions for your products; 2) Product quality—check core component brands (servo motors, VFDs, bearings), request third-party test reports or on-site trials; 3) Production scale—annual output reflects delivery capability and market position, recommend choosing established manufacturers with 100+ units/year; 4) After-sales network—overseas service points or partner agents, response time commitments (24hr remote/72hr on-site); 5) Customer references—request reference lists from same-industry customers, ideally with site visits; 6) Certifications—ISO 9001, CE and other basic certifications; 7) Contract terms—payment methods, delivery schedule, acceptance criteria, liability clauses should be clear and reasonable. We welcome customers to visit our factory for on-site inspection and trial runs, and provide 3+ same-industry customer references. Since 1996, we have served customers in over 50 countries, accumulating extensive industry experience.