SPIR'ATOR® Extended Eye Spring
The SPIR'ATOR extended eye power spring is an innovative design that improves upon traditional prestressed power springs. It features alternating layers of eye and spring elements, reducing the need for initial prewinds and allowing for a more economical design using thinner, shorter, and narrower materials. This results in a flatter torque curve across the spring's working range.

SPIR'ATOR® Prestressed Spiral Springs
These springs are created by reverse winding a NEG'ATOR on an arbor and enclosing it in a case. They offer a compact power source with higher working stress, providing more than twice the revolutions of a conventional power spring in the same size case, requiring 20% less space and featuring a low torque gradient.

Power Springs
Power or clock springs are the oldest and most common type of flat spring, produced by tightly winding tempered spring material on an arbor. They generate cumulative torque, increasing as they are wound tighter, and are limited to 20 turns. They can be shipped in customer-designed retainers.

NEG'ATOR Constant Force Springs
The NEG'ATOR spring provides nearly constant force or torque throughout its cycle, consisting of a prestressed strip of flat spring material capable of producing a negative force gradient. These springs can achieve up to 100 turns and are suitable for applications requiring constant force.

NEG'ATOR Constant Force Extension Springs
These springs maintain a relatively constant force regardless of extension length and are available in various sizes and load capacities, allowing for close matching to specific applications.

NEG'ATOR Constant Force Spring Motors
These motors provide constant torque and long deflection capabilities, offering an economical alternative to electric motors, achieving up to 100 turns with minimal effect on torque output.

RW Laminar Springs
RW laminar springs are created by laminating two or more NEG'ATOR bands, providing energy equal to the sum of the individual springs, ideal for applications requiring high load ratings and limited deflections.

Applications
NEG'ATOR springs are used in various applications, including drive motors, counterbalancing, retraction, tensioning, and loading. They are also suitable for motor brush springs and multiple motor configurations.

Technical Specifications
The document includes detailed tables with specifications for various spring models, including dimensions, load capacities, and fatigue life cycles.

Overview: The document provides detailed specifications and descriptions of various spring motor assemblies and spring-powered reels, primarily focusing on NEG'ATOR spring motors and Hunter Spring Products. It includes technical data, material specifications, and application guidelines.

Specifications: The document lists multiple models of spring motors and reels, detailing their torque, cable tension, cable length, number of revolutions, and endurance cycles. It specifies materials used, such as Type 301 high-yield stainless steel for springs and zinc-plated steel for drums and bases.

Procedures and Recommendations: Recommendations for drum diameters and flange diameters are provided for optimal performance. The document advises on the use of these products in design work and small quantity production lots, emphasizing the importance of testing for suitability in specific applications.

Standards and Norms: The document mentions a minimum fatigue life of 2,500 cycles for NEG'ATOR springs and provides detailed dimensions for various components, ensuring compliance with industry standards.

Key Data from Tables: The tables include model numbers, torque ratings, cable specifications, and dimensions for both spring motors and reels. They also provide information on the number of cycles and recommended drum sizes.

Applications: The spring motors and reels are designed for use in counterbalancing, retrieving, and returning functions. They are suitable for both linear and rotary force applications, with specific models tailored for different load and deflection requirements.

Conclusion: Hunter Spring Products offers a range of spring motor assemblies and reels with detailed specifications to meet various industrial needs. The document serves as a comprehensive guide for selecting and implementing these products in engineering and design projects.