Compression springs are open-coil helical springs wound or constructed to oppose compression along the axis of wind. Helical Compression Springs are the most common spring configuration. Generally, they are either placed over a rod or fitted inside a hole. When you put a load on a compression spring, making it shorter, it pushes back against the load and tries to get back to its original length. Compression springs offer resistance to linear compressing forces (push), and are in fact one of the most efficient energy storage devices. Compression springs can be supplied with ground ends for improved squareness and reduced solid heights.
Compression Spring Design:
Cylindrical • Conical • Barrel • Hourglass
Closed Ends • Open Ends • Reduced Ends
Ground Ends • Unground Ends
Constant Pitch • Variable Pitch
Finishing Operations:
Stress Relieve • Heat Treating • Passivation
Shot Peening • Plating • Painting
Powder Coating • Grinding
Wire sizes from 0.03 through 10mm
Materials:
Carbon Steels • Alloy Steels
Stainless Steel 17-7, 302, 304 and 316
Phosphor Bronze
Inconel x750
At Yisen Spring, we specialize in the professional design, custom engineering, and high-volume manufacturing of all types of compression springs. Whether your project requires standard cylindrical profiles, space-saving conical designs, or vibration-dampening variable pitch configurations, our advanced production facility is fully equipped to meet your exact specifications. Our manufacturing capabilities feature an exceptional range of wire diameters, stretching from ultra-fine precision micro-springs at 0.04mm up to heavy-duty industrial springs at 10mm. Backed by rigorous quality control and a commitment to rapid turnaround times, Yisen Spring delivers the perfect balance of micro-precision and robust strength for any industry application.
We specialize in the professional design, custom engineering, and high-volume manufacturing of all types of compression springs.
The standard and most widely used type of compression spring. Featuring a straight, uniform coil diameter, they offer a linear, consistent spring rate. Highly versatile and cost-effective, cylindrical springs are the go-to solution for a vast range of applications, spanning from simple push-buttons and consumer electronics to heavy-duty industrial machinery.
Designed with a cone-shaped profile that allows the active coils to telescope into one another when fully compressed. This telescoping action drastically reduces the spring's solid height (the height when fully compressed). Conical springs provide exceptional lateral stability and a variable spring rate, making them ideal for confined spaces, push-button mechanisms, and battery contacts.
Featuring a convex profile, barrel springs have a wider outer diameter in the center that tapers down toward the ends. This unique shape naturally resists buckling and prevents coil surging under high-speed, dynamic compression. They offer superior stability and load distribution, making them an excellent choice for automotive suspensions, seating systems, and agricultural equipment.
Characterized by a concave design, hourglass springs are narrower in the middle and wider at the ends. This geometry allows the spring to easily center itself over a guiding rod or within a custom housing. They provide excellent lateral stability and are frequently utilized in specialized mechanical assemblies requiring precise force delivery and self-centering capabilities.
Unlike standard designs, the distance (pitch) between the coils of a variable pitch spring changes along its length. This advanced engineering delivers a variable spring rate—meaning the spring becomes stiffer the more it is compressed. They are incredibly effective at dampening vibrations and preventing harmonic resonance, which is why they are widely used in high-speed engine valves and dynamic shock absorbers.
Engineered for extreme precision in applications where space is at an absolute premium. Manufactured using ultra-fine wire, miniature compression springs deliver highly accurate force in incredibly tiny footprints. They are the critical driving components behind modern technological advancements, extensively used in life-saving medical implants, micro-valves, precision aerospace instrumentation, and miniaturized electronics.
Compression springs are critical components in the automotive sector. They are most prominently used in vehicle suspension systems to absorb road shocks, provide a smooth ride, and maintain tire contact with the road. Additionally, they are essential in engine valves, clutches, and seating mechanisms.
In consumer electronics, highly precise micro compression springs are utilized to ensure reliable electrical conductivity and tactile feedback. Common applications include battery contacts, keyboard switches, push-button mechanisms, and internal components of smartphones and cameras.
The medical field relies on highly precise, often custom-manufactured compression springs made from biocompatible materials. They are critical in surgical instruments, medical staplers, drug delivery systems (such as inhalers and auto-injectors), and various diagnostic equipment.
Heavy-duty compression springs are foundational to industrial manufacturing and processing equipment. They are heavily utilized in stamping presses, conveyor systems, mining equipment, and pressure relief valves to handle massive load capacities and store significant mechanical energy safely.
Aerospace applications demand compression springs manufactured from specialized, high-performance alloys capable of withstanding extreme temperatures and stress. They are routinely integrated into aircraft landing gear shock absorbers, flight control systems, and various engine components.
Everyday home appliances utilize compression springs for vibration isolation, tensioning, and mechanical operation. Prominent examples include the internal suspension systems in washing machines to balance the drum, door latches in microwaves, and dispensing mechanisms in refrigerators.
Free Length: The total overall length of the spring when it is completely unloaded and relaxed.
Solid Height: The maximum compressed length when all the active coils are pushed completely tight against each other, leaving no space between them.
Important Note: A compression spring should never be fully compressed to its solid height during regular operation, as this causes extreme stress and shortens the spring's lifespan.
Music Wire (Carbon Steel): Best for high-stress, high-fatigue applications used in standard indoor environments. It offers incredible strength but can rust if exposed to moisture.
Stainless Steel (Grades 302/304/316): Best for medical, marine, or outdoor applications. It provides excellent corrosion resistance and performs well in harsher environments.
Copper Alloys (Phosphor Bronze/Brass): Ideal for electrical components due to their superior electrical conductivity and non-magnetic properties.
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