Category Archive: Springs

How To Get the Right Compression Springs

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Compression springs are utilized in various applications, including vehicle suspensions and industrial machines. They compress when a force is applied and recover to their original shape when released.

With so many compression springs available, determining the best for your needs might take some time. This article will walk you through selecting the best compression springs for your application.

Types of Compression Springs

Compression springs are crucial in providing resistance and support in many machines and devices, providing resistance and support. Here are the different types of compression springs and their applications:

Helical Compression Springs

Helical springs are the most common type of compression springs. It is made by winding a wire around a cylindrical object, such as a rod or a mandrel, and coiling it tightly.

Conical Springs

Conical springs are a type of helical compression spring designed with a taper. The coils of the spring are smaller at one end and gradually increase in size toward the other end. This design allows conical springs to provide more stability and support than traditional helical compression springs. As a result, they are ideal for applications requiring a constant spring rate and lower solid height.

Barrel Springs

Barrel or convex springs are designed with a larger diameter in the center and smaller diameters at the ends. This provides greater stability and support, making them ideal for heavy-duty applications with high loads. They are commonly used in vibrating equipment, shock absorbers, and valve actuators.

Hourglass Springs

Hourglass springs are designed with a smaller diameter in the center and larger diameters at the ends, offering greater flexibility. These springs are ideal for applications where a softer spring is required. They are often used in small, precision instruments and devices.

Belleville Springs

Belleville springs, also known as disc springs or conical spring washers, are conically shaped compression springs. They are designed to provide a high load-bearing capacity in a small space.

Curved Disc Springs

Curved disc springs are a type of Belleville spring designed with a curved shape. This design provides them with more support and stability than traditional Belleville springs. They are commonly used in clutches, brakes, and other applications that require high-torque transmission.

Wave Springs

Wave springs have a wave-like shape, allowing a higher load-bearing capacity while occupying less space. As a result, they are ideal for limited space applications, such as in the aerospace and medical industries.

Selecting the Right Compression Springs

Here are the key factors to consider on how to select the right compression springs for your application:

1. Determine the Load Requirements

The first step in selecting the right compression springs is to determine the load requirements of your application. This will help you choose the strength and size of the compression springs you need. You can calculate the load requirements by using the following formula:

Load = (Force x Distance) / Compression

2. Determine the Spring Rate

The spring rate measures how much force is required to compress the spring by a certain amount. You can calculate the spring rate by using the following formula:

Spring Rate = Load / Compression

3. Choose the Right Material

Some materials, such as stainless steel, are more durable and corrosion-resistant than others. Therefore, you should choose a material appropriate for the environment where the compression springs will be used.

If the springs are used in a corrosive environment, you may need to choose a more corrosion-resistant material. However,  if the springs are used in a high-temperature environment, you must select a material that can withstand high temperatures.

4. Consult With a Professional

Consulting a professional is always a good idea if you are unsure which compression springs to choose. They can help you determine the load requirements, spring rate, material, and other factors to ensure that you select the right compression springs.

5. Test and Verify

Once you have selected the compression springs for your application, testing and verifying their performance is important. You should try the springs under the conditions they will be used to ensure they meet the load requirements and provide the necessary resistance.

Draco Spring for High-Quality Compression Springs

As the world’s largest custom spring manufacturer, Draco Spring can produce every type of spring to meet your needs! Whether you require production quantities or short-run rush delivery, we’ve got you covered!

Contact us today to learn more about our compression springs and how we can help you with your spring needs.

Why Draco Spring Is the Global Leader in Spring Manufacturing

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For over 50 years, Draco Spring has been the forerunner in consistently delivering springs to over 100 different markets worldwide. Initially, we manufactured valve and actuator springs to meet the tight tolerances required by the US Navy and nuclear equipment. Draco now provides springs with the same high production standards to markets, including NASA and aerospace, oil and gas, stock cars, and many others.

This article will explain why Draco Spring is the global leader in spring manufacturing and why customers across industries highly regard our company.

Extensive Portfolio of High-Quality Products and Services

At Draco Spring, we take pride in manufacturing products that meet and exceed our customers’ expectations. We have a large selection of springs, wire forms, and metal stampings that can be used for various applications. Our services and capabilities include the following:


Draco Spring has decades of experience in spring design and engineering. We have highly developed spring design capabilities, enabling us to successfully create products from concept to production. We also use 2D CAD software to improve design visualization and execution.

Here are some of our engineering capabilities and products:

  • Hot coil: Draco can manufacture hot coil springs up to 2.75 inches in diameter and up to 45 ft. in length. We can also work with almost any diameter spring in a wide range of materials.
  • Cold coil: We can manufacture cold coil springs up to 1.75 in. diameter from various stainless and exotic alloys.
  • Coatings: Our coating options include paint, powder coat, Thermadep, nickel and cadmium plating, Tectyl, Sermagard, and Xylan.
  • Stocking programs: We have vast inventory space for annual blanket orders.
  • Metal forming: We produce a wide assortment of metal forms, including sway bars, eye bolts, football sled springs, elevator C springs, snap rings, wire forms, metal stampings, and spring clips.
  • Springs: We manufacture all types of springs including compression, pigtail, extension, torsion, tapered, clock, garter, volute, and leaf.
  • Other services: We offer additional services such as centerless grinding, parkerizing, Magnaflux, shot peen, liquid penetrant, and load testing.


Draco has established itself as the industry leader in fulfilling the stringent requirements for research and development projects. Most of our manufacturing equipment and machinery are designed and built in-house, allowing us to produce springs with tighter tolerances and industry-leading quality.

Our Enterprise Resource Planning (ERP) computer system provides accessibility, control, and monitoring for the organization’s manufacturing, inventory, workflow, and order tracking. ERP enables accurate monitoring and tracking of each order or request.

Fully-Equipped Facility and Commitment to Quality

Our facilities include 12 buildings covering an area of 110,000 square feet, with an ongoing additional expansion to meet rising customer requirements. We also have nine regional satellite offices dedicated to providing sales and support to all areas of the United States and the world.

Draco Spring is dedicated to only delivering high-quality products and services. We are ISO 9001:2015 certified, and our Quality Management System has evolved due to years of collaboration with our customers. In addition, we adhere to the following specifications and standards:

  • On-site Level III inspector
  • Compliant with 10CFR50 Appendix B and NCA3800 as approved by NIAC audit
  • Audited for the supply of oil and gas and safety relief valves to the nuclear, automotive, and aerospace industries
  • Trading partner with the US military

Dependable Global Spring Distributor for Various Sectors and Industries

Our dependability in supplying our clients enables us to cater to the needs of different industries and sectors that utilize spring components in their operational processes. Here are some of the industries with which we have worked over the years:


Draco Spring provides exceptional products and services to the military industry, particularly for manufacturing, repairing, and maintaining jet aircraft, tanks, ships, submarines, armored vehicles, and missile guidance.

Oil and Gas

We have experience creating custom-made spring components for valves, actuators, downhole tools, drilling equipment, seismic devices, and nitrogen service units in the oil and gas industry.


Springs are used in nearly all critical medical equipment components, allowing for better and longer-lasting devices. Mainly, they are used as shock absorbers and force generators in medical instruments such as inhalers, EpiPens, bandaging devices, and monitoring systems.


Different spring types are widely used in the automotive industry because they play critical roles in a vehicle’s suspension system. They are also applied to clutches, brakes, and transmissions.


The mining industry uses spring parts and components in vibratory shakers, heavy equipment, water blasting, earth-moving devices, and rock crushers.


Springs serve as the base for many parts and components, allowing aerospace devices and equipment to function as they do. These include drones, satellites, solar panels, aircraft controls, valves, and throttles.

Other Industries and Applications

  • Theme park rides
  • Farm equipment
  • Snow plows
  • Fitness
  • Bio-fuels
  • Waste management and recycling
  • Nuclear power
  • Regulators and actuators

Choose The Global Leader in Spring Manufacturing Now!

Draco Spring manufactures millions of springs per year in quantities ranging from 1 to 10,000 for over 4,000 customers worldwide. We also have practical experience and a track record of exceeding the most rigorous specifications while maintaining the highest levels of quality.

Contact us today to learn more about Draco Spring and how we can provide the best solutions for you!

Draco Spring Engineering and Quality Services

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Draco Spring originally made valve and actuator springs to conform to the exact specifications of the US Navy and nuclear equipment needs. Today, we supply springs with those same exceptional production standards to over 100 markets, including NASA and aerospace, oil and gas, stock cars, and many more.

We specialize in short-run rush deliveries and can make almost every type of spring, wire form, and metal stamping. Our quality is unmatched in any application or setting, from extreme conditions in space to hundreds of feet below the surface in the frozen North Atlantic.

Draco Spring has 12 buildings totaling 110,000 square feet and is located near Houston’s Hobby Airport. Additionally, we operate nine regional satellite offices that offer sales and customer assistance to all parts of the United States and the world.

Engineering Services

Draco has become the industry leader in meeting the most demanding requirements for research and development projects. Draco’s Engineering group offers 2D CAD design and advanced spring design capabilities. Draco offers complete product development from concept to production.

Manufacturing Services

Draco has designed and built the majority of the production equipment in-house. This allows the production of springs to tighter tolerances and a quality level that is unprecedented in the industry. Draco currently employs a production staff of 120 employees and maintains two shifts. The average tenure of our production employees is 17 years.

Draco’s Enterprise Resource Planning (ERP) system provides organizational visibility, control and measurement for manufacturing, inventory, workflow and order tracking. Every order is systematically tracked through our ERP system.

Quality Assurance

Draco Spring is certified to ISO 9001:2015. Draco’s Quality Management System has been developed as an evolutionary process through years of collaborating with our customers. These customers are leaders in their industries and demand compliance with the most stringent requirements, specifications and standards, including:

  • ISO-9001-2015 and ISO-certified compliance since 1997
  • NIAC audit approved
  • Partner with the US military
  • Approved by audit to supply oil and gas, safety relief valves, nuclear, automobile, and aerospace.
  • On-site Level III inspector.

Customer-Focused and Reliable Service From Draco Spring Mfg. Co.

At Draco Spring, we consider our clients the most crucial aspect of our business, and our dedication is evident in the numerous vendor accolades we have received over the years. Whether it’s working on product development, offering a quote, adjusting for changing production demands, or communicating a project update, we strive to provide the most attentive and prompt service!

Learn more about our products and services when you contact us today!

Key Considerations When Purchasing Hot Coil Springs

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Hot coil springs are used in environments with high loads, high temperatures, and areas exposed to corrosion. Some of the biggest consumers of hot coil springs are the transportation industry, agricultural equipment fabricators, and construction equipment manufacturers.

Coil springs do not require maintenance. They are built with specific coatings for increased rust resistance, can last a very long time, and don’t require regular lubrication or cleaning. In addition, coils provide a wider range of suspension movement than other types of springs.

This article will look into the characteristics of an ideal hot coil springs manufacturing partner for your fabrication requirements.

What Are Hot Coil Springs?

Hot coil springs are generally manufactured by heating metal and forming it into the desired shape and size. Further, some springs are tempered to satisfy specific manufacturing requirements. Compared to traditional coil springs, hot coil springs are harder to source due to their labor-intensive manufacturing process.

What To Look For in a Hot Coil Spring Manufacturer

Hot coil springs require longer lead times and can be expensive to produce. To ensure that you are working with a team capable of delivering high-quality custom coil springs, be on the lookout for these factors:

Custom Spring Design Capabilities

Design and development are critical steps in creating high-quality and durable coil springs. Thus, you must work with a manufacturing partner with CAD and design experience. Additionally, look for a company with skilled spring design engineers who can advise on every stage of your project requirements.

High-Quality Spring Materials

Three of the most common materials in manufacturing heavy-duty springs are stainless steel, chrome silicon, and nickel alloy. It would be best to work with a company that can provide spring prototyping to arrive at a design and material choice that best suits the needs of your project.

Bulk Production Capabilities

If you require bulk coil springs delivered within a specific time frame, you must check the capacity and delivery commitments of your potential coil spring manufacturer. These considerations are typically discussed during the consultation sessions and when submitting project quotes.

Standard Manufacturing Practices

The most recent revision of ASTM-125 is the recognized standard for spring manufacturing and tolerances. In addition to definitions and inspection procedures, this specification addresses squareness, maximum solid height, free height, and tolerance on the outside diameter. To ensure high-quality components and customer service, work only with a coil manufacturer that complies with these standards.

Superb Industry Experience and Customer Commitment With Draco Spring Mfg. Co.

Draco Spring Mfg. Co. is the leading hot coil spring manufacturer in the world, located in Houston, Texas. We are a reliable trading partner with the U.S. Military, and we supply to the nuclear, oil and gas, automotive, and aerospace industries.

Moreover, Draco Spring has been certified to ISO 9001:2015 since 1997 and approved by N.I.A.C audit in compliance with 1010CFR50 Appendix B and NCA3800.

Contact us today for your high-quality and industry-leading hot coil manufacturing needs!