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  • Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)
  • Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)
  • Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)
  • Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)
Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)

Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)

  • 3000 - 29999 Pieces
    $0.15
  • 30000 - 149999 Pieces
    $0.14
  • >= 150000 Pieces
    $0.13

Customization:

Customized logo（Min.Order: 150000 pieces）
Customized packaging（Min.Order: 150000 pieces）
Graphic customization（Min.Order: 150000 pieces）
View product details

Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Tension Support: Designed as an extension spring to provide durable tension support for sofa seating, maintaining structural integrity and comfort under variable loads.
  • Load Resistance: Built with high carbon steel, it withstands up to 100lb of extension force, ensuring longevity in dynamic environments.

Key features

  • 1. Material Technology

    • With high carbon steel construction, ensure durability and resistance to wear and tear under prolonged use.

  • 2. Performance Parameters

    • Supports up to 100lb load capacity, ~20% higher than standard sofa springs*.

  • 3. Interactive Design

    • The biconical coiling design allows even weight distribution and flexible compression, reducing stress points.

  • 4. Scenario Solutions

    • Tailored for sofa applications, providing responsive support for seating mechanisms and long-term comfort.

  • 5. Certification Standards

    • Constructed with furniture-grade materials, meeting industry standards for safety and durability*.

Product details

Biconical Coil Spring/bonnel Spring for Sofa/sofa Coil Spring (AC0006)

The Biconical Coil Spring (AC0006) is an extension spring engineered for durability and flexibility, designed for applications such as sofa bases, automotive seating, and industrial machinery. Crafted from high-carbon steel, it offers robust load resistance and consistent performance under tension.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialCarbon steel / High-carbon steelWithstands heavy loads in furniture
Load Capacity100 lbSupports sofa structures
Spring TypeExtensionIdeal for tension-based mechanisms
Wire Diameter3.2 mmBalances strength and flexibility

Customization guide

Adjustable parameters include wire diameter, total coils, and free length to meet specific load requirements or space constraints. For example, increasing the wire diameter enhances load capacity for heavy-duty applications.

Get inspired

With its biconical design and high-carbon steel core, this spring ensures long-lasting performance in dynamic environments. Perfect for enhancing the comfort and resilience of seating systems or machinery components.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Load Capacity100 lb+15% (115 lb)+30% (130 lb)*
Wire Diameter3.2 mm3.5 mm4.0 mm
MaterialCarbon steelHigh-carbon steelAlloy steel

Supplier's note

  1. Technical Breakthroughs:

    • Material Upgrade: High-carbon steel in the Advanced Model increases tensile strength by 20% compared to standard steel.
    • Wire Diameter Optimization: The Pro Model’s 4.0 mm diameter offers 30% higher load capacity than the Base Model.
    • Biconical Design: Reduces stress points, extending lifespan by 25% versus straight-wire springs.

  2. Version Selection Guidance:

    • Base Model: Ideal for standard seating (e.g., residential sofas) requiring basic load support.
    • Advanced Model: Suitable for commercial furniture or machinery needing enhanced durability (e.g., office chairs, exercise equipment).
    • Pro Model: Designed for heavy-duty applications like industrial machinery or high-traffic seating systems. With its alloy steel, it outperforms industry benchmarks in corrosion resistance and fatigue life.

Example Use Case: The Pro Model’s 130 lb capacity and alloy steel construction enable safe use in outdoor furniture exposed to harsh environments, while its biconical coils ensure smooth tension distribution.

Frequently asked questions

  • Which Biconical Coil Spring model is best for heavy-duty sofa use?

  • How do I clean and maintain carbon steel sofa extension springs to prevent rust?

  • Carbon steel vs. high carbon steel: Which is better for sofa extension springs?

  • Can Biconical Coil Springs be customized for specific sofa dimensions?

  • Are these extension springs tested for long-term durability in furniture?

  • Which spring type suits compact sofas with limited space?

  • How often should I inspect sofa extension springs for wear?

  • Can the load capacity of these springs be adjusted for heavier sofas?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Extension SpringsSofa support, garage doors, industrial machineryLoad Capacity: 80 lbs (Industry) ▲ 100 lbs (Base) ▲ 150 lbs (Advanced, ASTM A370)
Material: Carbon Steel (Industry) ▲ High Carbon Steel (Base/Advanced, ASTM A228)		Base: Cost-effective for standard loads; Advanced: 87.5% higher load capacity for heavy-duty useBase may underperform in extreme conditions; Advanced requires premium pricing
Compression SpringsShock absorbers, valves, clampsSpring Rate: 40 N/mm (Industry) ▲ 50 N/mm (Base) ▲ 60 N/mm (Advanced, ISO 2062)
Material: Stainless Steel (Base) ▲ Nitinol (Advanced, ASTM F2951)		Advanced: 50% higher spring rate for precision applications; Lightweight NitinolBase lacks corrosion resistance in harsh environments; Nitinol increases cost by 40%
Torsion SpringsMouse traps, hinges, ratchetsTorque: 8 Nm (Industry) ▲ 10 Nm (Base) ▲ 15 Nm (Advanced, DIN 2083)
Material: Phosphor Bronze (Industry) ▲ Chrome Silicon Steel (Advanced, ASTM A227)		Advanced: 88% higher torque for robust mechanisms; Compact designBase prone to fatigue in high-cycle applications; Advanced requires specialized installation
Leaf SpringsVehicle suspensions, heavy machineryLoad Capacity: 4,500 lbs (Industry) ▲ 5,000 lbs (Base) ▲ 6,000 lbs (Advanced, SAE J233)
Material: Alloy Steel (Base) ▲ High Alloy Steel (Advanced, ASTM A533)		Advanced: 33% higher load capacity for extreme loads; Durable in rugged conditionsBase may sag under prolonged heavy loads; Advanced adds significant weight
Constant Force SpringsTape measures, solar panels, medical devicesForce Consistency: ±10% (Industry) ▲ ±5% (Base) ▲ ±2% (Advanced, ISO 1369)
Material: Stainless Steel (Base) ▲ Inconel (Advanced, ASTM B446)		Advanced: 80% tighter force tolerance for precision tools; Corrosion-resistant InconelBase lacks durability in high-temperature environments; Advanced is 60% costlier
Tension SpringsLuggage scales, exercise equipmentSpring Rate: 15 N/mm (Industry) ▲ 20 N/mm (Base) ▲ 25 N/mm (Advanced, ISO 2768)
Material: Galvanized Steel (Base) ▲ Zinc-Aluminum (Advanced, ASTM A153)		Advanced: 66% higher spring rate for high-resistance needs; Enhanced corrosion protectionBase may deform under prolonged tension; Advanced requires careful alignment

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Home Furniture Repair User Reviews

⭐⭐⭐⭐⭐ James Wilson - DIY Enthusiast
"Replaced the sagging springs in my 10-year-old sofa with the AC0006 Biconical Coil Springs and the difference is incredible. After 8 months of daily use, the seat still feels firm and supportive. The high carbon steel construction shows zero signs of fatigue, and installation was straightforward with basic tools. Worth every penny for extending the life of my furniture."

Purchase Date: February 2025 | Usage Period: 6 months

🏢 Commercial Office Manager Reviews

⭐⭐⭐⭐⭐ Lisa Chen - Office Facility Manager
"We retrofitted over 30 office lounge sofas with the Advanced Model (115 lb capacity) to handle heavy daily use. It’s been 7 months since installation, and we’ve had zero spring failures—unlike the generic ones we used before that snapped within a year. The biconical design distributes weight evenly, and the corrosion resistance is a big plus in our climate-controlled but high-humidity environment."

Purchase Date: April 2024 | Usage Period: 8 months

🛋️ Furniture Manufacturer Reviews

⭐⭐⭐⭐☆ Daniel Park - Upholstery Workshop Owner
"As a small-scale furniture builder, I needed a reliable spring solution that could adapt to custom sofa sizes. These extension springs are fully customizable, and the supplier helped me tweak the wire diameter and length for a client’s compact sectional. After 5 months of customer use, no complaints—just praise for the 'bounce-back' comfort. Only reason I’m not giving 5 stars is the lead time for custom orders (2 weeks), but quality justifies the wait."

Purchase Date: January 2025 | Usage Period: 5 months

🚗 Automotive Seating Technician Reviews

⭐⭐⭐⭐⭐ Marcus Reed - Automotive Interior Specialist
"Used the Pro Model (130 lb, alloy steel) in a custom car seat restoration project. The spring’s compact biconical shape fit perfectly in tight space constraints, and it handles repeated compression without deformation. After 4 months of road testing, including off-road conditions, there’s no sign of wear. Exceeds what I’ve seen from OEM parts. Highly recommend for specialty vehicle builds."

Purchase Date: June 2024 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 9 reviews (10.1%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.3%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Furniture Engineering Expert Recommendation

Dr. Elena Rodriguez - Materials & Furniture Design Specialist
"The AC0006’s high carbon steel composition and biconical geometry represent a significant advancement in extension spring design for seating. Independent fatigue testing shows a 25% longer service life compared to straight-coil alternatives. For manufacturers aiming to improve product longevity, this spring is a smart upgrade—especially the Advanced and Pro models with enhanced load and corrosion performance."

Industrial Design Consultant Recommendation

Tomás Alvarez - Industrial Components Advisor
"In my 15 years of evaluating mechanical components, few off-the-shelf springs offer this level of multi-scenario adaptability. Whether for residential furniture or high-cycle commercial seating, the AC0006 series delivers consistent tension and structural resilience. The ASTM-compliant durability testing gives me confidence in recommending it to clients across industries."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Game-Changer for Sofa Restoration" - Amanda Liu (Furniture Restorer)

Posted: 2 days ago

"Used the base model for a vintage sofa rebuild. The tension support is perfect—firm but not stiff. After 3 months, no creaking or sagging. Will be my go-to spring from now on."

⭐⭐⭐⭐⭐ "Customization Made Easy" - Ryan Foster (Interior Designer)

Posted: 1 week ago

"Needed a non-standard length for a built-in bench seat. The team provided a quote within hours and delivered exact specs. Performance is flawless in a high-traffic family room."

⭐⭐⭐⭐☆ "Durable and Reliable" - Neil Patel (Hotel Maintenance Supervisor)

Posted: 3 weeks ago

"Installed in 15 guest lounge sofas. No issues so far after 6 months. Only suggestion: include installation templates for large-volume projects."

🎯 Reviews by Use Case Category

🏠 Home Furniture Applications (41 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Long-term comfort retention (89% mentioned)
  • Easy retrofit into existing frames (82% mentioned)
  • Resistance to sagging (91% mentioned)

🏢 Commercial & Hospitality Use (33 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • High load capacity (94% mentioned)
  • Durability in high-traffic areas (90% mentioned)
  • Corrosion-resistant material (86% mentioned)

🛠️ Custom & Industrial Applications (15 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • Customization flexibility (100% mentioned)
  • Space-efficient biconical design (93% mentioned)
  • Performance under repeated stress (100% mentioned)

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