SPRING MANUFACTURING TECHNOLOGIES

• Measure the Hole Diameter (also known as Outside Diameter)
• Measure the Rod Diameter (also known as Inside Diameter)
• Measure the Free Length (no load on the spring)
• Measure the Wire Size (both width and thickness dimensions)
• Use our search feature or catalog to find the correct color code and size for your needs.
• For example, if a die spring measures .96″ on the hole dimension, it will fit into a 1″ hole. If it measures .56″ on the rod dimension, it will fit over a .50″ rod. Note: Die springs are manufactured to a “GO/NO-GO” dimension.

Hole and Rod Diameter

The die spring containment hole diameter sizes used in our online and print catalogs must be considered to eliminate possible spring-to-wall friction caused by heat, wear due to fabrication tolerances, and interference from the spring diameter growth due to compression. If the spring is long for its diameter, an internal supporting rod may be required to eliminate spring buckling.

Heat

Thermal effects are frequently ignored in spring failure or load-loss analysis. The maximum rated service temperature for chrome-alloy steel is about 440° F. The following table reflects the approximate load losses due to heat that can be expected with die springs.

Finish

Die springs of oil-tempered material are available as unfinished only. A colour coding system is employed for our chrome-alloy line for instant visual identification of the spring’s work range and to prevent errors in spring selection and installation. The colour coding is a light coating of water-based paint.

ISO

• Light Duty – Blue
• Medium Duty – Red
• Heavy Duty – Gold
• Extra-Heavy Duty – Green

JIs

• Light Load – Green
• Medium Load – Blue
• Heavy Load – Red
• Extra-Heavy Load – Yellow

Specification:

Wire Diameter:

The thickness of the wire used to create the spring, which directly affects its strength and load-bearing capacity.

Outer Diameter:

The total diameter of the spring's coil when it's not under any load.

Free Length:

The overall length of the spring when it's not under any load.

Solid Height:

The height of the spring when it's fully compressed.

Materials:

Die springs are available in two main materials: oil-tempered and chrome-alloy. The choice of material depends on the application's requirements.

Color Code:

Die springs are often color-coded to indicate their load capacity. Each color corresponds to a specific load range.

Load Ratings:

Die springs are rated based on the maximum load they can handle without experiencing permanent deformation or failure.

Spring Rate:

The amount of force the spring exerts per unit of deflection.

Number of Coils:

The total number of coils in the spring, which can affect its overall length and flexibility.

End Configurations:

Die springs can have different end configurations, such as closed and ground ends, to enhance stability and alignment.

Application-Specific Design:

Die springs can be customized for specific applications, including load requirements, deflection characteristics, and dimensions.