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  • SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts
  • SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts
  • SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts
  • SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts
  • SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts
SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts

SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts

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SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Energy Storage & Tension Regulation: Designed as a torsion spring for lockstitch sewing machines, it stores and releases torque to maintain consistent tension in stitching mechanisms, ensuring precise and durable缝合.
  • Mechanical Support: The helical steel coil provides robust torque resistance, critical for stabilizing sewing machine parts during high-speed operations.

Key features

  • 1. Corrosion-Resistant Steel Alloy Construction

    • With a corrosion-resistant steel alloy and protective black coating, ensure long-lasting performance in demanding environments*.

  • 2. Optimized Helical Coil Design for Seamless Integration

    • With a helical coil design and integrated hook/straight arm configuration, achieve seamless integration into sewing machinery systems for stable operation.

  • 3. High-Torque Performance for Precision Stitching

    • With optimized torque capacity, deliver consistent performance under continuous operation, ensuring precise stitching even under high-speed sewing demands.

  • 4. Versatile Application in Home and Commercial Settings

    • Designed for lockstitch sewing machines, this spring ensures smooth operation in both home and commercial settings, adapting to frequent use without losing tension or durability.

  • 5. Compliance with Industrial Safety Standards

    • Complies with international industrial safety standards for machinery components, ensuring reliable performance and user safety*.

Product details

SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Parts Apparel Machine Parts

The SB3559001 Spring Brother S7000DD Lockstitch Sewing Machine Torsion Spring is a precision-engineered component designed to deliver consistent torque in apparel machinery. Crafted from high-carbon steel with a protective black oxide coating, this spring ensures durability and resistance to corrosion, even in demanding workshop environments. Its helical coil design with a hook-and-straight-arm configuration provides reliable energy storage and release for smooth stitching operations.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialHigh-carbon steel with black oxide coatingWithstands stress in sewing mechanisms exposed to lubricants and vibrations
DesignHelical coil with hook and straight armMaintains tension in lockstitch operations for precise stitching
Torque Capacity5–15 NmSupports high-speed stitching in apparel production
Temperature Range-20°C to 80°COperates reliably in varied workshop conditions

Customization guide

Adjustable coil diameter (10–20mm) and wire gauge (0.8–2.0mm) to meet specific torque requirements in industrial sewing applications. Hook styles can be customized for seamless integration into diverse sewing machine models.

Get inspired

Ideal for precision sewing applications, this torsion spring ensures consistent torque delivery in lockstitch machines, supporting high-speed stitching and reducing downtime.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Torque Capacity5–10 Nm+15% (up to 11.5 Nm)+30% (up to 13 Nm)*
Fatigue Life100,000 cycles150,000 cycles200,000 cycles
Material HardnessHRC 45HRC 50HRC 55 (Premium alloy)

Supplier's note

  1. Technical Breakthroughs:

    • Corrosion Resistance: The black oxide coating extends lifespan in humid workshops.
    • Enhanced Torque: Advanced/Pro models offer 15–30% higher torque than industry benchmarks, enabling faster stitching cycles.
    • Customizable Design: Adjustable parameters ensure compatibility with diverse sewing machine configurations.

  2. Version Selection Guide:

    • Base Model: Suitable for standard home or small-scale apparel production.
    • Advanced Model: Ideal for medium-volume industrial sewing, offering extended durability for 150,000+ cycles.
    • Pro Model: Best for high-torque commercial garment factories, with triple the fatigue life of base models and premium alloy hardness for extreme reliability.

*Pro Model torque exceeds industry standards by 30%, enabling seamless operation in heavy-duty lockstitch machines.

Frequently asked questions

  • Which torsion spring model fits Brother S7000DD sewing machines?

  • How do I clean and lubricate torsion springs for sewing machines?

  • Steel vs. other materials: Which is best for sewing machine torsion springs?

  • Can I customize torsion spring dimensions for apparel machinery?

  • Are torsion springs for sewing machines ISO-certified?

  • Where are torsion springs used in sewing machines?

  • How long do steel torsion springs last in sewing machines?

  • Tips for installing torsion springs in Brother sewing machines?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material & CoatingIndustrial sewing in humid environmentsSteel (Industry) ▲Stainless Steel (Base) ▲▲Black Oxide Coated Steel (ASTM A950) (Advanced)Advanced: Enhanced corrosion resistance for harsh environments.Advanced coating increases cost by 20–30%.
Torque CapacityHeavy-duty materials (e.g., leather)4 Nm (Industry) ▲5 Nm (Base) ▲▲7 Nm (Advanced)Advanced: Handles thicker fabrics and prolonged use.Base may suffice for lighter tasks, reducing cost.
Fatigue ResistanceContinuous factory operation100k cycles (Industry) ▲150k (Base) ▲▲200k (Advanced) (ASTM E8/E9)Advanced: Twice the lifespan of industry standards for high-demand machines.Advanced versions require premium alloy materials, increasing production time.
Noise LevelOffice or healthcare settings45 dBA (Industry) ▲43 dBA (▲ quieter than refrigerator) ▲▲40 dBA (Advanced)Advanced: Minimizes noise pollution in sensitive environments.Advanced design may slightly reduce torque efficiency.
Corrosion ResistanceCoastal or humid regions100h salt spray (ASTM B117) (Industry) ▲200h (Base) ▲▲500h (Advanced)Advanced: Withstands extreme humidity and salt exposure.Advanced coatings require specialized application, raising maintenance costs.
CustomizationSpecialized machinery integrationLimited (Industry) ▲Coil sizes (Base) ▲▲Full customization (Advanced)Advanced: Tailored coil diameters, hook styles, and torque specs.Custom orders delay delivery by 1–2 weeks.

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