| Customization: | Available |
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| Function: | Phonation, Drive, Restoration, Measurement |
| Material: | Steel |
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Optimized Tension Springs for Heavy-Duty and Lightweight Tasks - Engineered for Perfection
At Bosswinn, we specialize in manufacturing precision-engineered tension springs designed to perform flawlessly across a wide range of applications-from delicate electronics to rugged industrial machinery. Our optimized tension springs combine high elasticity with unmatched durability, ensuring consistent force and reliable extension under both lightweight and heavy-duty loads.
Built using premium-grade materials and advanced coiling technology, each spring is tailored for optimal performance, corrosion resistance, and long service life. Whether you're designing compact mechanisms or large-scale equipment, Bosswinn's tension springs deliver the perfect balance of strength, flexibility, and precision.
Choose Bosswinn for springs that don't just meet expectations-they exceed them.
Dual-Purpose Design
Engineered to perform reliably in both light-load and high-tension applications, from small mechanical assemblies to industrial-grade equipment.
High Elasticity & Precision Force Control
Delivers accurate pull force and maintains tension over extended use without deformation or fatigue.
Premium-Grade Materials
Available in music wire, stainless steel, galvanized wire, oil-tempered, and custom alloys for specific environments (e.g., high temperature, corrosive conditions).
Custom Hook & Loop End Options
Wide range of end configurations including machine hooks, cross centers, side loops, extended hooks, and specialty forms to match exact installation requirements.
Tight Tolerances & Coil Accuracy
Manufactured with tight dimensional control and consistent winding to meet exacting industrial specifications.
Corrosion & Fatigue Resistance
Surface-treated or coated options (zinc plating, passivation, powder coating) available for extended outdoor or chemical exposure.
Size Range Flexibility
Offered in a broad range of wire diameters, lengths, and coil counts-ideal for miniature assemblies or heavy machinery alike.
In-House Engineering & Testing Support
Bosswinn provides design consultation, sample prototyping, and force/load testing to ensure perfect fit and function.
ISO-Certified Quality Control
Every spring undergoes rigorous inspection, including load testing, tensile strength checks, and visual assessments under certified QC systems.
Global Supply Capacity
Main Parameters of Bosswinn Tension Springs
Wire Diameter (d):
Range: 0.15 mm - 12.0 mm
Determines the spring's load-bearing strength and elasticity.
Outer Diameter (OD):
Range: 1.5 mm - 100 mm+
Influences the spring's fit and mounting space.
Free Length (L0):
Customizable based on application, typically 10 mm - 1000 mm+
The spring's length when not under tension.
These parameters are tailored according to customer application-Bosswinn engineers assist with optimizing size, material, and tension for performance and durability
Total Number of Coils (Nt):
Dictates the spring's flexibility and travel distance.
Precision coiling ensures uniform force across extension.
Initial Tension (F0):
Preloaded tension built into the spring-critical for applications requiring no slack.
Adjusted based on design needs.
Maximum Extended Length (Lmax):
Calculated to avoid permanent deformation.
Common range: up to 1.5-2.0x free length depending on material and design.
Spring Rate (k):
Expressed in N/mm or lbf/in
Indicates how much force is needed to extend the spring by 1 mm or inch.
Precision-controlled per customer specifications.
Load at Specific Extension (Fx):
Custom-specified based on desired pull force at defined extension lengths.
Material Type:
Options include:
Music wire (ASTM A228)
Stainless steel (302, 304, 316)
Oil-tempered wire
Phosphor bronze, Inconel, or galvanized steel
Chosen based on environmental and mechanical demands.
Hook/Loop Type:
Machine loop, cross-over center, side loop, extended hook, or custom end forms.
Affects installation and stress distribution.
More photos
Extension springs are in our daily life everywhere, small electronics, house appliances, from being in our cars , to the farm machinery that produces our food.
Extension springs make the electronics to function as designed.
Springs are likewise used in washing machines to suspend the drum in position.
extension springs to help the house doors or furnitures close back over once they have been opened.
The most common exercise equipment that use extension springs like the Chest Expander, and other strenght training facilik
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