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torsion spring manufacturer

Torsion Springs

Stanley Spring & Stamping - Torsion Spring Manufacturer

Stanley Spring & Stamping is your one-stop-shop for all of your torsion spring design, production, and manufacturing needs. Since opening our doors to the public in 1944, we have created the highest quality springs and metal stamping parts in the industry. We can produce outstanding torsion springs to your exacting standards and needs. Our springs have been successfully used in many products and numerous, diverse industries. We can produce springs of this type in a variety of sizes, materials, and thicknesses.

A great majority of torsion springs produced have been designed in a close wind orientation. When there is an engineering concern about friction developing between the coils, the spring design can feature a pitch, which helps to reduce any concerns about friction building up within the coil structure.

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Where are torsion springs used?

Torsion springs are used to exert a rotational force, which creates torque. Used in applications that require the spring to deflect rapidly.

Here is a partial list of the industries or devices that regularly use these springs.

For optimal performance, the load of a torsion spring should be orientated in the direction of the wind. When wound up, the body length of a torsion spring becomes longer. However, its body diameter is reduced. These characteristics should be taken into consideration when design space is in short supply in a given product or device.

Torsion Spring Configurations

Torsion Springs are engineered to have a rotational actuation and will provide an angular return- pressure force. As it relates to the design and characteristics of a spring’s legs, there are a variety of options available, since not all springs will attach the same way in every device. The attachment of the spring to the supporting structure can be accomplished in many ways. Here is what to consider when evaluating the specifications of torsion spring legs:

  • Style of Leg Ends
  • Length
  • Degree of Angle

Torsion springs that have a straight or parallel on the same side design characteristics will have a zero-degree leg angle. Common leg end designs include:

  • Short Hook End Design
  • Straight Offset
  • Longer Hood End Designs
  • Hinged
  • Straight Torsion

Double Torsion Spring Production

We are also able to produce double torsion springs. These products have many common characteristics with single torsion springs; however, they are unique in some ways. Double torsion springs involve the use of two sets of coils, one being coiled with a right-hand orientation and the other being coiled in a left-handed direction. The two sets of coils are normally connected by an unwound piece in between the coils and work harmoniously in parallel. The total torque output of a double torsion spring is made up of the sum of the torque made by each individual coil wind.

Custom Springs

At Stanley Spring, we can produce custom springs based on the requirements of your project. Contact us for a free quote for your next project, and we can discuss material sizes, the number of total coils needed, and the type of spring wire required for your desired spring.

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Dimension Considerations

When designing and producing torsion spring products, the following measurements need to be taken into consideration.

  • Inner Diameter
  • Outer Diameter
  • Spring Length
  • Wire Diameter
  • Length of Spring Legs

Spring diameter is a critical design element for the following reasons.

  • The Inner Diameter must be precise in order to allow a spring to go over a mandrel with the proper amount of operational clearance.
  • Outer Diameter must allow a spring to fit into a design cavity while still giving it proper clearance to freely function and clear outer housings.
  • The spring length must be exacting to allow the spring coil and legs to fit in its designated spot in the device.
  • Wire Diameter is the diameter of the coil wire itself and must be correct for the specific application.
  • Spring Length is important to consider, as the legs must fit correctly into their supporting structures in order for the spring to operate as designed.

Torsion Spring Performance Characteristics

To ensure the proper functioning of either a single or double torsion spring, the following factors must align with the spring’s desired performance.

  • Spring Rate – This is the angular return torque produced per angular displacement unit.
  • Wind - Torsion spring wind orientations can be left handed, right handed or double torsion.
  • Maximum Level of Deflection – This is the maximum angular deflection a torsion spring can withstand before failing or being damaged.

Stanley Spring and Stamping can produce your steel torsion springs in either English (Imperial) or metric units. Be sure to specify what unit of measurement you need for your application.

Torsion springs have so many uses and play an important role in the successful operation of many products and devices. Stanley Spring and Stamping is proud of the over seven decades of experience we have in producing springs that have been a part of so many quality products.

Contact Stanley Spring and Stamping today for a quote and to learn more how we can custom make the highest quality products for your exact needs and specifications.

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