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MaxLife Die Springs

Dayton Progress

Dayton MaxLife die springs offer a selection of hundreds of different springs in a full range of diameters and lengths to meet your needs. Our die springs are manufactured from pre-tempered chrome silicon wire produced from specially prepared valve spring quality rod. This provides improved dimensional accuracy and minimizes performance robbing stress points.

All Dayton MaxLife Die springs are designed to meet or exceed technical specifications and other criteria as established by industry guidelines. Designated springs are manufactured to meet or exceed the International Organization for Standardization (ISO) and/or Japanese Industrial Standards (JIS).

  • Longer Spring Life - significantly out performs other major brands.
  • Greater Consistency - Each spring will be the same as the one produced before it.
  • Higher Quality - Your are assured that your spring will perform as expected.
  • Immediate Availability - Dayton's Firm Delivery Schedule means that the springs you need will be shipped to you within one day after receiving your order.
     

Product Applications

Dayton MaxLife® Die Springs are designed to the highest quality standards, and manufactured to outperform and outlast other major brands. All Dayton die springs are available in a wide range of lengths, diameters, and load classifications in both inch and metric sizes. In addition, all springs are color-coded for easy identification of load range.

Corrosion-resistant Dayton die springs are made from pre-tempered chrome silicon wire to improve dimensional accuracy, minimize high-stress cracking, optimize the working life of press and mold dies, and help reduce downtime. Many manufacturers specify Dayton die springs to ensure optimum operation in heavy industry applications, including: automotive; aircraft; appliance; electrical; and electronic.

Quality & Performance

From the incoming raw material (tested for tensile strength, dimensional accuracy, and surface quality) to the finished product, every Dayton die spring undergoes continuous quality control to ensure optimum product performance. In comparison testing, Dayton die springs consistently outperform and outlast other major brands.

All Dayton die springs are stress relieved after coiling, then compressed to solid to enhance fatigue life. Further, they are ground square at both ends, then shot-peened. (Shot-peening supplements compressive strength to reduce stress and extend spring life.) Finally, all finished springs are electro-statically coated with a durable, anti-corrosive vinyl, and color-coded for easy identification of load ranges.

Ordering Information

Dayton die springs are ordered according to: the amount of pressure applied to the spring (see "Load Deflection Table"); the hole diameter (which determines the rod diameter); and, the free length of the spring (see drawing on usage category page). On each order, please specify quantity and "Catalog Number."

In the example below, the first "Catalog Number" is DMD37-100. "DMD" refers to Medium Duty Inch. "37" refers to a 3/8" hole diameter and 3/16" rod diameter. The "100" designation further defines the product with a free length of 1". The "Load Deflection Table" on each catalog page provides percentage of deflection, travel to solid, and load @ 1" or 1mm deflection to help determine the exact spring to select. The second product code shown is for an extra heavy duty metric spring.

The "Efficient Operating Range" of any spring should not be exceeded. For safe operation, when changing from another manufacturer to a Dayton die spring, verify that the travel of both springs is the same.

How to Order

Specify: Qty. Catalog Number
Example: 16 DMD37-1200
  24 ED32-127

Worldwide Distribution, On-time Delivery

Dayton maintains a large inventory of Dayton MaxLife® Die Springs in all standard categories throughout our system. There are no minimum size orders, and on-time delivery is a top priority. A Firm Delivery Schedule (FDS) is provided in each catalog section.

Industry Standards

All Dayton MaxLife® Die Springs are designed to meet or exceed technical specifications and other criteria as established by industry guidelines. Designated springs are manufactured to meet or exceed The International Organization for Standardization (ISO) and/or Japanese Industrial Standards (JIS).

Inch Springs

  • Medium Pressure, Blue Stripe, M
  • Medium Heavy Pressure, Red Stripe, MH
  • Heavy Pressue, Yellow Stripe, H
  • Extra Heavy Pressure, Green Stripe, EH

Inch Springs—ISO Colors

  • Light Duty, Green, DLD
  • Medium Duty, Blue, DMD
  • Heavy Duty, Red, DHD
  • Extra Heavy Duty, Yellow, DED

Metric Springs—ISO

  • Light Duty, Green, LD
  • Medium Duty, Blue, MD
  • Heavy Duty, Red, HD
  • Extra Heavy Duty, Yellow, ED

Metric Springs—JIS

  • Extra Light Load, Yellow, DP91
  • Light Load, Blue, DP92
  • Medium Load, Red, DP93
  • Heavy Load, Green, DP94
  • Extra Heavy Load, Brown, DP95

 

Tolerance Data

Standard Die Springs

Spring Tolerance                    
OD: 0 to -.015
ID: 0 to +.015

Load: +/-10%

Free Length:   
0-5": 0 to +.09
5-8": 0 to +.12
8-10": 0 to +.19
10-12": 0 to +.25

Squareness: 3º max.

 

JIS Standard B5012

Spring Tolerance
OD: -0.7mm +0.1mm
ID: +0.1mm +0.7mm

Free Length:
below 50mm: +/-0.5mm
over 55mm: +/-1%

Load: +/-10%

 

ISO Standard 10243

Spring Tolerance
OD: H15
ID: h15

Free Length:
25-64: +/-3%
76-115: +/-2.5%
127-305: +/-2%

Load: +/-10%