We produce custom springs and wireforms. We do not stock standard parts.
We produce custom springs and wireforms. We do not stock standard parts.
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Custom Drawbar Springs

Custom drawbar springs manufactured to customer specifications for engineers, OEMs, and industrial buyers who need extension style spring assemblies for overload protection, positive stops, load control, securing applications, prototypes, and production orders.

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Custom Drawbar Spring Manufacturing Since 1939

Custom Drawbar Spring Manufacturing to Specification

Ace Wire Spring & Form Co., Inc. manufactures custom drawbar springs to customer specifications for OEMs, engineers, and industrial manufacturers. Drawbar springs are spring assemblies where a compression spring is combined with drawbar arms so the spring compresses as the arms extend under load. This type of spring assembly can provide a fixed stop, help prevent overstretching, reduce buckling, and support applications that require controlled extension force or overload protection.

Unlike standard catalog springs, custom drawbar springs are manufactured around the customer’s drawing, sample, dimensions, material requirements, load requirements, end style, assembly length, tolerances, finish requirements, and application needs. Ace supports custom drawbar spring projects from prototype and sample production through repeat production orders.

What Are Drawbar Springs Used For?

Drawbar springs are used when an application requires extension style movement with the added support of a compression spring and drawbar assembly. They may be used when a standard extension spring could be overstretched, deflected excessively, or exposed to conditions where a positive stop is needed. Drawbar springs can also help reduce buckling and provide controlled movement under load.

Common applications include load securing systems, tarp systems, pool covers, transportation equipment, hauling equipment, industrial assemblies, outdoor equipment, and custom OEM applications where tension, retention, extension, or overload protection is required. The current page already highlights load securing under tarps and pool cover applications, but those should be examples within a broader application section, not the entire identity of the page.

Drawbar Spring Design Assistance and Manufacturing Feedback

Ace provides drawbar spring design assistance as part of qualified custom manufacturing opportunities. Customers may come to Ace with a complete drawing, sample, failed part, photo, incomplete print, or application problem. Our team can review the available information and help identify what details may affect manufacturability, repeatability, load performance, end style, spring length, assembly length, material selection, tolerances, and production efficiency.

Drawbar spring performance can be affected by assembly length, maximum and minimum spring length, controlling diameter, wire size, material, number of coils, loads at deflected positions, end style, finish, maximum solid length, operating frequency, and lubrication requirements. Discussing these details early can help reduce production issues, improve repeatability, and support a more accurate quote.

Prototype and Production Drawbar Springs

Ace can support prototype drawbar springs, sample production, and repeat production orders. Prototype and sample drawbar springs help customers evaluate fit, extension movement, load performance, end style, assembly clearance, positive stop behavior, and manufacturability before moving into larger production quantities.

For production orders, Ace supports customers that need consistent repeatability, domestic manufacturing, scheduled releases, quantity break pricing, and blanket order programs. This makes Ace a strong fit for customers that need custom drawbar springs manufactured to specification over time, not one-time retail replacement parts.

Drawbar Spring Materials, Finishes, and Secondary Services

Ace manufactures custom drawbar springs using spring and wire materials selected around the application requirements, including strength, corrosion resistance, forming needs, outdoor exposure, load requirements, fatigue life, and production demands. Drawbar springs may require specific materials, finishes, lubrication, or secondary services depending on where and how the assembly will be used.

Secondary services and finishes may include heat treating, stress relieving, deburring, painting, plating, passivation, and other finishing operations depending on the part requirements. Customers should include required finishes, coating specifications, material requirements, load requirements, operating environment, and quality documentation needs when requesting a quote.

When Ace Is the Right Drawbar Spring Manufacturer

Ace is a strong fit for engineers, OEMs, purchasing teams, and industrial buyers that need custom drawbar springs manufactured to specifications. Ace is especially well suited for projects involving drawings, samples, prototypes, repeat production, load requirements, positive stop needs, overload protection, custom end styles, domestic manufacturing, quality documentation, secondary services, blanket order planning, or ITAR registered supplier needs.

Ace may not be the right fit for customers looking for standard catalog drawbar springs, retail replacement springs, one-piece hobby orders, or immediate off-the-shelf inventory. Ace is a custom manufacturer, not a stock spring distributor.

Request a Quote for Custom Drawbar Springs

To request a quote for a custom drawbar spring, send the available drawing, sample, photo, assembly length, spring length, controlling diameter, wire size, material requirements, load requirements, end style, tolerances, finish requirements, application details, quality requirements, quantities, and expected production needs. If the project is still early stage, Ace can review the available information and help identify what may be needed to quote, prototype, or manufacture the spring assembly.

For more detailed guidance, visit the Request a Quote Tips page.

Frequently Asked Questions About Custom Drawbar Springs

What are custom drawbar springs?

Custom drawbar springs are spring assemblies manufactured to customer specifications using a compression spring and drawbar arms. As the drawbar arms extend under load, the spring compresses, which can help provide controlled extension force, a positive stop, overload protection, and reduced risk of overstretching.

Does Ace Wire Spring manufacture custom drawbar springs?

Yes. Ace Wire Spring manufactures custom drawbar springs to customer specifications for engineers, OEMs, and industrial manufacturers. Drawbar springs may be quoted from drawings, samples, photos, dimensions, material requirements, load requirements, end styles, tolerances, and application details.

What information is needed to quote a custom drawbar spring?

Customers should provide drawings, samples, photos, assembly length, spring length, controlling diameter, wire size, material requirements, load requirements, end style, finish requirements, tolerances, quantities, application details, quality requirements, and expected production needs.

Design Specifications

Ordering Drawbar Springs
    In ordering give the following springs specs as completely as possible:

  • Assembly Length, Maximum, Minimum. Spring Length, Maximum, Minimum
  • Controlling Diameter, Outside Diameter Maximum. Inside Diameter Minimum. Pitch Diameter. Works Inside (Dia. Hole). Works Over (Dia. Shaft).
  • Number of Coils.
  • Wire Size. Decimal size if possible. Material, Kind and Grade.
  • Loads at deflected positions.
  • Style of Ends, (see illustrations). Standard, Strap, Eye, Enlarged
    Finish. Plain unless otherwise specified.
  • Maximum Solid Length.
  • Frequency of Compression.

Manufacturing Drawbar Springs

  • Ability to build drawbar up to 5/8in. diameter.
  • Able to build a spring that work to stronger loads.
  • Can be made of carbon steel or stainless.

Ace Advantage

ACE specializes in custom precision springs and wire forms, offering a distinct advantage by utilizing the most advanced spring design software. ACE validates each existing and new design, notifying the customer with our recommendations.

Benefits of Drawbar Springs

  • Fixed stop to control the spring when goes to solid to eliminate overstretching.
  • Eliminates buckling.

Request a Quote for Custom Springs & Wire Forms

Certifications and Associations