Constant Force Springs Spring Winding Services
Last Updated: February 12, 2025
Description
Constant force springs are mechanical devices designed to exert a consistent force over their range of motion. They are typically made from a strip of pre-stressed material that is tightly wound into a coil. As the spring is extended, it maintains a constant force, which is a key characteristic that differentiates it from other types of springs.
Working Principle
Constant force springs operate on the principle of a pre-stressed strip of material that is wound into a coil. When the spring is extended, the material unwinds, but the force exerted remains constant throughout the extension. This is due to the pre-stressing of the material, which ensures that the force does not vary with the length of extension. This consistent force output makes them particularly useful in applications where a uniform force is required, such as in retractable mechanisms or balancing systems.
Applications
Constant force springs are used in a variety of applications across different industries. For example, they are commonly found in retractable projection screens, where they help in the smooth extension and retraction of the screen. In the retail sector, they are used in beverage racks to push products towards the cooler door, ensuring easy access for customers. Other applications include their use in doors, cable and hose retractors, toys, hair dryers, and gym equipment. They are also utilized in more specialized fields such as space and aviation, military, tool manufacturing, and automotive/transportation industries .
Advantages over other Spring Winding Services
One of the primary advantages of constant force springs over other spring winding services is their ability to provide a consistent force throughout their range of motion. This is particularly beneficial in applications where a steady force is necessary, such as in retractable systems. Additionally, constant force springs can be designed to fit into compact spaces, making them versatile for various design requirements .
Limitations
Despite their advantages, constant force springs have limitations. They require careful consideration of the weight and number of pieces in a line, as these factors determine the type and length of the spring needed. Additionally, the end detail, which is how the spring connects to the system, must be precisely designed to ensure proper functionality .
Considerations
When considering the use of constant force springs, several factors should be taken into account. Initial costs can vary depending on the specific design requirements, such as the material and dimensions of the spring. Operating expenses are generally low due to the durability and long life cycle of these springs, which can range from 4,000 to 100,000 cycles . However, accuracy in force output is crucial, and standard tolerance for the force is typically ± 10% . Replacement and maintenance costs are generally minimal, but it is important to ensure that the spring is correctly installed and maintained to prevent premature wear or failure.
from Coiling Technologies, Inc.
Through the years, Coiling Technologies, Inc. has strived to maintain an exceptional level of a service in the spring industry. This is due to our highly skilled engineers, well-experienced staff, and our best practices that we apply to our manufacturing products and services. We offer our customers... [See More]
- Capabilities: Compression Springs; Conical / Taper Springs; Constant Force Springs; Die Springs; Disc / Washer Springs; Extension Springs; Torsion Springs; Wireforming
- Location: Located in Houston Texas
- Materials: Spring Steel; Music Wire; Stainless Steel; Exotic Metals
from Century Spring Corp.
Custom Coil Springs & Wire Forms. The Century Spring reputation for superior quality, on-time delivery and on-target pricing of our custom springs is well known throughout the industry. Our Custom Spring Department is available to assist you with a design for any application. Quotations are... [See More]
- Capabilities: Compression Springs; Conical / Taper Springs; Constant Force Springs; Die Springs; Disc / Washer Springs; Extension Springs; Torsion Springs; Wireforming
- Certification / Quality Requirements: ISO 9001:2008 Certificate of Registration
- Additional Services: Design; Low Volume; High Volume
- Location: Located in Commerce, California
from Peridot Corporation
Peridot has considerable experience in the following types of spring manufacturing: Compression springs. Extension springs. Torsion Springs. Belleville washers. Wave Washers. Garter Springs. Clock Springs. Battery contacts both stamped and helically wound are our specialty. [See More]
- Capabilities: Compression Springs; Conical / Taper Springs; Constant Force Springs; Disc / Washer Springs; Extension Springs; Flat Springs; Garter Springs; Leaf Springs; Power / Clock Springs; Torsion Springs; Variable Pitch Springs; Stamping; Wireforming
- Materials: Spring Steel; Music Wire; Stainless Steel; Exotic Metals
- Additional Services: Assembly; CAD; Design; JIT; Prototype; Low Volume; High Volume; Reverse Engineering
- Diameter / Thickness Range: Unlimited
from Dudek & Bock Spring Manufacturing Company
Dudek & Bock: Your World Class Manufacturer of Springs, Wireforms, Light Metal Stampings and Assemblies in Mexico and the United States. Dudek & Bock is a leading manufacturer of custom springs, wireforms, light metal stampings and assemblies. We are committed to the success of our... [See More]
- Capabilities: Compression Springs; Conical / Taper Springs; Constant Force Springs; Extension Springs; Flat Springs; Garter Springs; Power / Clock Springs; Torsion Springs; Variable Pitch Springs; Stamping; Wireforming; Custom Springs
- Materials: Spring Steel; Music Wire; Stainless Steel; Exotic Metals
- Additional Services: Design; Low Volume; High Volume
- Diameter / Thickness Range: 0.005" - 0.550"
from Maryland Precision Spring, an MW Industries Company
Our Maryland Precision Spring location has been a custom manufacturer of Belleville disc springs & stacks, constant & variable force springs, motor & power springs, retail PoP pushers, reel retrievers, light stampings, and electrical assemblies since 1972. A leading supplier in the Point of... [See More]
- Capabilities: Compression Springs; Constant Force Springs; Disc / Washer Springs; Extension Springs; Flat Springs; Power / Clock Springs; Torsion Springs; Variable Pitch Springs; Stamping; Wireforming
- Materials: Spring Steel; Stainless Steel; Exotic Metals
- Additional Services: Assembly; Design; Prototype; Low Volume; High Volume
- Diameter / Thickness Range: Up to 0.312"