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China, Chinese Vintage Italy Pruning Shears Cutter Volute Spring1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Hardware AccessoriesSpringVolute SpringsSprings
Zhuji Bosswinn Springs Co., Ltd.
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Product Description Product Description The Vintage Italy Pruning Shears Cutter Volute Spring is a specialized component designed to restore smooth, reliable action to traditional Italian-style pruning tools. Crafted with precision and built from high-strength spring steel, this volute (coil) spring provides consistent tension and excellent return force, ensuring effortless blade opening and closing during pruning tasks.Ideal for vintage garden shears and classic horticultural tools, this replacement spring offers durability, corrosion resistance, and authentic compatibility with Italian-made pruning cutters. Whether for repair, restoration, or performance upgrade, it's the perfect choice for professionals and gardening enthusiasts who value craftsmanship and functionality. Key Features of Bosswinn Volute SpringCompact Power DesignBosswinn volute springs are engineered in a compact, conical coil shape that provides high force output in limited space-ideal for constrained applications like pruning shears, stamping dies, or heavy-duty tools.High-Strength Spring SteelManufactured using premium-grade alloy or carbon spring steel, ensuring excellent fatigue resistance, high tensile strength, and long service life under repeated compression.Progressive Load ResistanceThe volute structure provides a progressive spring rate, increasing resistance as the spring compresses-perfect for applications requiring controlled energy absorption and gradual force buildup.Precision Winding & Heat TreatmentEach spring is precision-formed and heat-treated for optimal elasticity, stability, and dimensional accuracy, ensuring consistent performance in OEM and replacement uses.Corrosion-Resistant OptionsAvailable with surface treatments such as black oxide, zinc plating, or custom coatings to enhance rust resistance in outdoor or humid environments.Custom Sizes & OEM SupportBosswinn supports custom design and OEM manufacturing based on your dimensions, load requirements, and application needs-ensuring perfect fit and function every time.Wide Application RangeUsed in pruning tools, industrial clutches, stamping dies, hand tools, and various mechanical assemblies that require high-load spring force in a compact form. Bosswinn Metal Volute Spring - Detailed SpecificationsGeneral Product InformationItemSpecificationProduct NameMetal Volute SpringBrandBosswinnSpring TypeVolute (Conical Spiral Compression Spring)ApplicationHeavy-duty Industrial Equipment, Clutches, Punching Dies, Pruning Tools, Press Machines, Railway BuffersShapeVolute / Conical SpiralCustomization OptionsShape, Size, Load, Surface Finish, Material, EndsOEM/ODM SupportFull customization with drawing support and NDA optionAfter-Sales ServiceTechnical support, replacement policy, lifetime consultation Materials & Construction| Material Options | High Carbon Spring Steel, Alloy Spring Steel, Stainless Steel || Stainless Steel Grades | SS 302, SS 304, SS 312, EN45, EN47 || Special Alloy Option | SUP10 (51CrV4 / 6150 Chrome-Vanadium Spring Steel), 4 m bar length || Technique | Hot Rolled, Heat Treated, CNC Ground Ends || Surface Finishing | Polished, Shot Blasted, Black Oxide, Zinc Coated, Phosphated || Corrosion Resistance | Yes - via material choice and coating options | Dimensional Specifications| Available Wire Size | 2 mm - 40 mm || Plate Thickness | 5.0 mm - 32.0 mm || Outer Diameter Range | 20 mm - 300 mm (Max. up to 450 mm possible) || Inner Diameter | Customizable as required || Free Length | Up to 500 mm or customized || Coil Turns | 3 - 20 turns (or per custom design) || Thickness / Width | 2 mm - 20 mm || Coil Diameter Tolerance | ±3.0% (standard minimum) || Free Length Tolerance | ±2.0% (standard minimum) | Mechanical Performance| Load Capacity | Up to 20 Tons/piece (engineerable up to 47 Tons) || Load Tolerance | ±15% (as installed and at maximum compression) || Travel Tolerance | ±15% (standard) || Elastic Limit | High resilience, minimal permanent deformation || Hardness (HRC) | 38 - 50 (depending on material and heat treatment) || Durability Treatment | Shot Peening || Temperature Range | -50oC to 180oC (indoor working temperature) | Why Choose Bosswinn Volute Springs?Decades of experience in industrial spring manufacturingStrict quality inspection and traceability on each batchCapable of handling urgent and high-precision ordersTrusted by global OEMs and heavy-industry tool manufacturersCompetitive pricing with export-grade packagingOur production Bosswinn Cutter Volute Springs are precision-engineered spiral compression springs used primarily in pruning shears, hand tools, and garden cutters. Designed for compact spaces with high return force needs, these springs are crafted for long service life, smooth operation, and consistent blade performance.Production OverviewAt Zhuji Bosswinn Springs Co., Ltd., the production of cutter volute springs follows a controlled process combining traditional craftsmanship with modern precision engineering.1. Material SelectionSpring Steel, Carbon Steel, or Stainless Steel (SS304, SS316) is selected based on the tool's durability and environment (e.g., outdoor gardening, high humidity).All materials are tested for tensile strength, hardness, and corrosion resistance before use.2. Spiral FormingThe steel strip or rod is hot-rolled or cold-wound into a volute (spiral conical) shape.High-precision coiling machines ensure uniform tension, gradual compression rate, and tight tolerances.3. Heat TreatmentThe spring undergoes tempering and hardening at controlled temperatures.This improves fatigue life, elasticity, and load-bearing capacity, usually achieving HRC 38-50 hardness.4. Surface TreatmentTo ensure rust protection and smooth operation, the springs are treated with:PolishingBlack oxide coatingZinc plating (optional for anti-rust)Custom coatings are available upon request (e.g., for antique/vintage garden tools).Our quality controlAt Zhuji Bosswinn Springs Co., Ltd., maintaining consistent product performance, safety, and reliability is essential. Our Cutter Volute Springs undergo a systematic and rigorous quality control workflow to meet international standards and customer-specific requirements. Each stage of production is monitored and tested to ensure premium performance in hand tools and precision cutting devices. 1. Raw Material InspectionMaterial certification verification (chemical composition and mechanical properties)Visual check for surface defects (rust, cracks, impurities)Hardness and tensile testing for compliance with design requirementsBatch traceability system applied from steel supplier to finished product 2. In-Process ControlSpring forming accuracy inspection during coiling (pitch, shape, diameter)Real-time load testing using calibrated spring load testersDimensional checks (outer diameter, free length, coil gap) per drawingTolerance verification using micrometers, calipers, and digital gaugesOperator self-inspection + shift supervisor spot-checks 3. Heat Treatment MonitoringControlled atmosphere furnace used for hardening and temperingTemperature logging and cycle validationPost-heat-treatment hardness testing (target: HRC 38-50)Spring resilience test for elastic deformation limits 4. Surface Treatment InspectionAdhesion check for black oxide or plating layersCorrosion resistance testing (salt spray test available on request)Finish quality check for uniform coating, no flaking or unevenness 5. Functional TestingCompression cycle life testing (to simulate repeated use in tools)Spring return force test to ensure smooth, consistent motionNoise and vibration evaluation (for high-end cutting applications)Tool-fit simulation using in-house cutter assembly setups 6. Final Quality InspectionFull batch inspection reports based on AQL (Acceptable Quality Limit)Random sampling using ISO/GB standard proceduresDefect rate analysis and classification (minor, major, critical)QC labeling, tagging, and pass certificate issuance 7. Packaging Quality CheckClean, dry, corrosion-protective packing materialsCustom packaging inspected for correct labeling and client brandingDrop tests or vibration simulation for export packaging durability 8. Documentation & TraceabilityFull production record retention for at least 3 yearsQC checklist and batch numbers marked on packagingMaterial test reports (MTR), CoC, and inspection reports available upon request Optional Third-Party InspectionSGS, TUV, or customer-designated inspection agencies accepted before shipmentVideo inspection, live QC feedback, or factory audit support available Bosswinn guarantees that each Cutter Volute Spring leaving our factory has passed through multiple layers of quality control, ensuring performance, safety, and customer satisfaction.Packaging & Shipping Packing and deliveryHow to Pack and Deliver Metal Volute Springs ProperlyProper packaging and shipping of metal volute springs is essential to prevent damage, corrosion, deformation, and contamination during transportation and storage. Bosswinn follows internationally accepted practices combined with custom solutions tailored to each client's volume, destination, and handling requirements.1. Cleaning and Pre-Packaging PreparationEach spring is cleaned to remove dust, grease, or oil residues.If corrosion resistance is a concern, springs may be lightly oiled or anti-rust coated before packaging.Final visual and dimensional checks are performed to ensure only approved items are packed.2. Primary Packaging OptionsBased on spring size, weight, and quantity:Sealed PE Bags are used for small-sized precision springs, sample orders, and moisture control.Foam or Bubble Wrap is used for high-value or polished springs needing surface protection.Oil Paper Wrap is used for springs requiring anti-corrosion packaging for long storage.Partitioned Cardboard Boxes are used to prevent tangling or scratching for small or medium springs.3. Secondary Packaging for Bulk OrdersCorrugated Cartons are used for medium loads, usually under 25 kg.Wooden Crates or Boxes are used for large springs, heavy-duty batches, or export shipments.Palletized Crates are ideal for container shipments and allow forklift handling and stacking.Jute Gunny Bags (optional) are used for low-cost local transport of non-precision large springs.All packaging is labeled with product name, quantity, heat or batch number, handling instructions, and client branding if OEM.4. Transportation and DeliveryDelivery mode is chosen based on urgency, weight, and destination:Express Courier (DHL, FedEx, UPS) is used for sample orders and small urgent shipments.Air Freight is used for medium volumes needing fast global delivery.Sea Freight (LCL or FCL) is used for large volumes and is cost-effective for international customers.Truck Delivery is used for domestic or regional deliveries in bulk crates.Springs are loaded securely to avoid compression or deformation during transit.For export, we provide fumigated and certified wooden packaging per customs regulations.5. Shipping DocumentationCommercial invoicePacking listCertificate of originQuality inspection report or test reportHS code declarationCE, ISO, or SGS certification if requested6. Additional Protections (Optional)Desiccant packs for moisture protection in sealed containers.Plastic shrink wrap or vacuum sealing for rust-sensitive springs.Custom labeling or barcode systems for warehouse integration.Bosswinn ensures that every volute spring reaches its destination in perfect condition by combining technical packaging knowledge with logistics experience. Whether shipping across provinces or continents, we pack with durability, safety, and traceability in mind.The applications Key Application Areas1. Pruning Tools & Hand ToolsUsed in vintage and modern pruning shears, garden clippers, and hand cuttersEnsures smooth blade return and consistent cutting performance2. Mechanical Clutches & CouplingsProvides controlled torque and return force in heavy-duty clutch systemsIdeal for industrial machinery and automotive applications3. Stamping Dies & Press MachinesAbsorbs shock loads during high-pressure stamping and forming operationsEnhances die durability and operational safety4. Railway & Transportation BuffersUsed in shock-absorbing systems in railway couplers and buffer devicesOffers high-load tolerance with reliable energy dissipation5. Heavy Industrial EquipmentSupports components in construction machinery, loaders, and crushersWithstands vibration, compression, and load fluctuations6. Defense & Aerospace SystemsApplied in heavy mechanisms requiring compact and robust spring forceResistant to extreme conditions and long service life cycles7. Agricultural MachineryProvides spring tension in seeders, harvesters, and equipment linkagesWithstands outdoor exposure and repeated compression Why Bosswinn Volute Springs?Custom Load Capacity (up to 20 tons/piece)Compact Design for Limited Space AssembliesLong-Lasting Performance Under Repeated CompressionCorrosion-Resistant Options for Harsh Environments Bosswinn Metal Volute Springs combine traditional craftsmanship with modern engineering, making them a trusted choice for OEM manufacturers, toolmakers, and industrial system integrators. Company ProfileOur Core Product & Service Offerings1. Compression SpringsCustom-designed coil springs that resist compressive forces, used in automotive, machinery, valves, and electronics. Offered in a wide range of diameters, lengths, and load ratings.2. Tension (Extension) SpringsHigh-strength springs that absorb and store energy under tension. Tailored hook types and load specs are available for applications such as doors, levers, and industrial linkages.3. Torsion SpringsEngineered to resist rotational or twisting forces, available in single or double-torsion configurations. Ideal for hinges, clamps, tools, and industrial mechanisms.4. Flat Springs & Leaf SpringsMade from flat strip materials, these springs offer precise deflection and are used in electronics, clutches, switches, and braking systems.5. Precision Punching PartsHigh-accuracy stamped components made from steel, stainless steel, brass, aluminum, and more. We provide punching, deep drawing, forming, bending, and assembly as per customer design.6. CNC & Fine Machining ServicesWe offer CNC turning, milling, threading, grinding, and drilling of custom metal components. Tolerances up to ±0.01 mm are achievable to meet exacting standards. Additional Capabilities & SupportCustom Design & OEM/ODM ServicesFull support for client-specific spring and metal part designs, with engineering consultation and 3D drawing validation.Surface Treatment OptionsZinc plating, nickel plating, black oxide, phosphate coating, powder coating, mirror polishing, and more.Material ExpertiseSpring steel, stainless steel (SS302, SS304, SS316), copper, brass, aluminum, and special alloys.Quality AssuranceISO 9001:2015 certified with full in-house inspection: hardness, load test, surface finish, dimensional accuracy.Global Logistics & PackagingExport-grade packaging (wooden boxes, jute bags, or custom) and support for international shipping to Europe, Asia, North America, and beyond. Zhuji Bosswinn Springs is committed to delivering reliable, cost-effective, and high-performance solutions to clients worldwide. Whether you need custom springs, precision metal parts, or complete assembly services - Bosswinn is your trusted manufacturing partner.FAQQ1: What is a volute spring and where is it used?A volute spring is a heavy-duty compression spring with a conical, spiral shape. It is commonly used in industrial applications such as clutches, railway buffers, pruning tools, press machines, stamping dies, and shock-absorbing systems where compact, high-load spring action is required.Q2: What materials are available for Bosswinn volute springs?We manufacture volute springs using high carbon spring steel, alloy steel, and stainless steel (grades SS302, SS304, SS312, EN45, EN47), depending on the customer's mechanical and environmental requirements.Q3: Can Bosswinn customize volute springs according to specific requirements?Yes, we offer full OEM/ODM customization. You can provide technical drawings or specify dimensions, load capacity, surface treatments, and material preferences. We also offer design assistance if needed.Q4: What is the typical load capacity of a Bosswinn volute spring?Our volute springs can handle loads up to 20 tons per piece, depending on the size and material. For specialized applications, we can engineer springs to meet even higher load requirements.Q5: Are the springs corrosion resistant?Yes. We use stainless steel materials and/or apply corrosion-resistant surface finishes such as black oxide, zinc plating, or phosphate coating to ensure durability in harsh environments.Q6: What is the average lead time for production and delivery?Standard delivery time is 15-20 days for bulk orders. Samples or small-volume orders can often be shipped within 3-7 days.Q7: Do you offer samples before placing bulk orders?Yes. We offer free samples (0 deposit) - the buyer only needs to cover the freight charges. Sample production time is typically 3-5 days.Q8: What packaging options are available?We provide secure packaging including wooden boxes, jute gunny bags, and custom packing solutions to ensure safe delivery during transportation.Q9: What are your accepted payment terms?We accept T/T, L/C, OA, and PayPal (for small/sample orders). Flexible terms may be offered based on the customer profile and order size.Q10: Do Bosswinn springs meet international quality standards?Yes. Our springs are manufactured under ISO 9001:2015 certification, and we can provide SGS or CE reports on request. Every batch undergoes strict quality control, including load testing and hardness inspection.
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