Clock Springs

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The coils of a clock spring are formed by winding spring wire around a cylinder into helically shaped metal springs. There are two coil types for clock springs: tight coils and open coils. Clock springs with tight coils are, in normal applications, completely without friction. Tight coil clock springs are often used as locking mechanisms. Read More…

Clock Springs Clock springs, or power springs, are helically wound springs that are naturally inclined to expand; the expansion generates torque, or circular movement. However, once the expansion occurs and the spiral length has run out, the clock spring must be rewound.
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Leading Manufacturers

Lake Geneva, WI  |  262-249-7854

R&L Spring Company manufactures custom spring and wire formed components for industries such as powersports, automotive, medical devices, and general industrial. Products include compression, extension, and torsion springs, as well as rings, wire forms, fourslide components, and long coils. Wire diameters available from .001" to .750" in both shaped wires and flat stocks. Their experienced team is able to meet the most demanding parts specifications. IATF16949 and ISO9001 certified.

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R & L Spring Company $$$

Elgin, IL  |  847-697-5920

Since 1984, Patrick Manufacturing has been a leading producer of custom made-to-order precision springs for high volume applications using wire up to .236” diameter. Wire forms up to .500” wire diameter are also manufactured. Our state-of-the-art CNC coiling and forming machines are ready to work for you. We are ISO 9001:2015 registered. Patrick manufactures for OEM’s and contract manufacturers across many industries in the United States, Europe and Mexico. Patrick is also woman owned and operated.

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Patrick Manufacturing, Inc. $$$

Alsip, IL  |  708-629-0921

As an ISO 9002-certified business, you can expect quality from Taylor Spring. We produce made-to-order compression springs, torsion springs and extension springs. At Taylor Spring, the customer is our number-one priority! We make it a priority to work with you every step of the process from taking your call to shipping your product you'll know you're working with a trust worthy business.

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Taylor Spring Mfg. Co. $$$

Rockford, IL  |  815-963-3334

Riverside Spring is Family Owned and Customer Focused with capabilities that expand over generations in manufacturing of medium to high volume Springs, Wire Forms, Rings, Clips, Flat Forms and Light Stampings. We look forward to the opportunity to quote and earn your confidence.

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Riverside Spring Company $$$

Chino, CA  |  909-465-5166

R & D Spring has the goal of providing our customers with the highest quality products in the industry. All our springs, from torsion springs to extension springs, are made of high quality materials. We take our job seriously, which is why we are the trusted spring manufacturer for many companies in the military, aerospace, and computer industries. Contact us today!

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R & D Spring and Stamping, Inc. $$$

Bristol, CT  |  860-582-6368

Our springs are made of a variety of materials and can be used in many different applications. Pa-Ted manufactures custom designed springs for the automotive, electrical, medical, landscaping, pool covers, and original equipment manufacturers industries, and uses materials such steel, beryllium copper, music wire, brass, titanium, tungsten wire, oil tempered wire, and resistance wire. Call us for wire forms today!

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Pa-Ted Spring Co., LLC $$$
placeholder image R & L Spring Company Patrick Manufacturing, Inc. Taylor Spring Mfg. Co. Riverside Spring Company R & D Spring and Stamping, Inc. Pa-Ted Spring Co., LLC

Clock springs with open coils are the most common type and must be mounted in housings. Open coil clock springs offer a low increase of force and are often used in applications such as retractable reels, retracting seat belts, mechanical motors, tape measures, timing devices, vehicle suspensions, galvanometers and electrical switches.

Typical industries that utilize clock springs include military, medical, automotive, electronics, agricultural, commercial, industrial and utilities. Clock springs are most commonly made from a certain type of spring steel referred to as either blue steel or clock spring steel. Blue steel is tempered and polished spring steel, which has a very high carbon content and is generally dark blue in color.

Small Clock Springs Clock Springs - All-Rite Spring Company

Clock springs consist of a flat coil strip and are wound, either tightly or openly, similar to a snail shell in that each coil is nested within a larger coil. Flat coil strips provide a stronger spring than round wire, although round wire is more commonly used in springs. Often, clock springs are wound and mounted on an arbor, which is a piece of round stock that has one end formed to accept the inside end of the clock spring, while the outside end is attached to a stationary post.

The power spring is also housed within a cylindrical casing, or barrel. The clock spring is wound by turning the arbor, but it drives the object’s movement by the barrel; this arrangement allows the clock spring to continue powering the object while it is being wound. Winding the object turns the arbor, which tightens the clock spring, wrapping it closer around the arbor.

Clock springs are most commonly formed through the cold rolling process. A type of roll forming, cold rolling utilizes roll forming machines, which consist of sequences of calenders, or roller die pairs, positioned both above and below the metal coil that is being formed. As the metal moves through the machine, the rollers bend the material along the linear axis, pressing the metal into a more uniform grain flow while shaping the metal into flat coil strips.

Cold rolled clock springs are created at temperatures below the recrystallization point of the metal. The cold rolling process increases the tensile strength of the metal. The clock springs are then annealed, or made softer through heating, so that they can be wound or coiled. Next, the clock spring is heat treated in order to reduce stresses and fractures and thus further strengthen the spring.

Clock Springs Informational Video