Constant Force SpringsMW Industries’ Maryland Precision Spring location specializes in constant force springs and variable force springs, for many applications including point-of-purchase (POP) displays.

Our springs are available in a wide range of standard end fittings, or we can custom design an end fitting for your application. We ship in any quantity, from just a few to millions and we offer the fastest lead times in the industry.

Types of Constant Force Springs & Variable Force Springs

Constant Force Springs

Constant Force Springs provide a smooth and efficient force for moving product in a POP (point-of-purchase) slide tray, regardless of whether the tray is made of plastic, wire or corrugated material. The springs take up very little space, are economical, and easy to assemble.

Sample Kits

Samples of our constant force and variable force spring product line are available in various Sample Kits, free of charge, to assist you in designing your next project. Send us samples of your trays and product, and then we can assist you in selecting the right spring for your application or design. Contact us using the information towards the bottom of this page.

Variable Force Springs

Variable Force Springs are recommended for applications where a stronger force is initially required to move the product. As the product is removed, the variable force spring automatically adjusts to the lighter load, which provides smooth product transition. Like the Constant Force Springs, they are also economical, easy to assemble, and use little space.

Reel RetrieversReel Retrievers & Mini Reels

The Reel Retriever is a device which offers theft deterrence and customer convenience for POP displays. A compact box which is securely fastened to a display contains a spring-loaded, retracting cable assembly. The reusable cable is positively attached to the product, allowing customers to handle products in stores while the products remain secure and displays are kept in order.

The Mini Reel is our small profile solution for projects requiring maximum security with minimum space. The compact design has a slim profile that provides the same security as our full size Reel Retriever

Cable lengths are available at 6″ up to 72″.

Standard spring ends include: small eyelet, large eyelet, round dome, loop, ball, crimp, spring, reusable and self-centering magnetic end. Custom spring ends are also available.

SlideLine Pusher SystemsSlideline™ Pusher Systems

Slideline™ Pusher Systems maintain appealing merchandise displays by utilizing spring tension that automatically repositions the product. This results in organized, efficient, and attractive display. When a product is removed from these neatly aligned display trays, spring tension automatically repositions the row of products and the next item is automatically pushed to the front. Slideline Pusher Systems can be customized to fit any shelf size and fixture configuration.

MWI Production Capabilities


Constant Force & Variable Force Springs:

  • Motor and Power Springs
  • Strip Widths: 0.100” – 2”
  • Thicknesses: 0.003” – 0.031”
  • Lengths: 12”- 60”
  • Stock Inventory in Over 200 Designs
  • Short Lead Times
  • Standard and Custom End Configurations
  • Metric and Standard Sizes
  • Laser Etching Available (Bar Codes, Logos)

Reel Retrievers, Mini Reels, & POP Displays:

  • Constant Force & Variable Force Springs
  • Complete Line of Stainless Steel Stock Springs Available (Various End Details from “T” to “Step” Designs)
  • Custom Engineering Design Assistance
  • Retractable Cable Lengths: 6” – 72”
  • Variety of End Fittings
  • Range of Product Materials and Finishes
  • Metric and Standard Sizes

Engineering & Product Support:

  • Application Engineering Support
  • Consignment & Kan-Ban Inventory
  • EDM Prototype Production
  • In-House Heat Treating
  • In-House Tool Shop
  • Special Packaging
  • Stamping & Machining
Quality Spring Design & Manufacturing


Point-of-Purchase Product Displays

  • Supermarket or Convenience Store Displays
    • Tobacco
    • Beverages
    • Candy

Secure Product Displays

  • Electronic Displays
    • Cell Phones
    • Cameras
    • Tablets
  • Cosmetic Displays
    • Perfume
    • Lip Stick
    • Nail Polish
  • Supermarket Displays
    • Deli
    • Pet Food
    • Pharmaceuticals


  • Food & Beverage
  • Industrial
  • Point of Purchase
  • Retail
  • Security
Constant & Variable Force Springs
For information on Contact & Variable Force Springs:
Contact Us
Request A Quote

Maryland Precision Spring
P: 410.391.7400
F: 410.687.9223 (orders and quotes)

> Springs & Assemblies for Product Display Applications Brochure (PDF)