Springs
DieMax XL Die Springs
Springs you can rely on
A combination of enhanced raw material, optimal spring design, innovative manufacturing processes, and broad distribution channels allow the DieMax XL® spring to yield the best, most dependable performance and availability combination, time after time.
Spring Wire
Danly springs are manufactured from premium spring quality steel. The high tensile strength and superior heat resistance wire characteristics contribute to the low-stress, long life spring design.
Enhanced Design
Our spring starts with a modified trapezoidal cross section and changes to a “D” cross section after coiling. This wire cross section has significantly lower stress levels during compression compared to competitor designs. The “D” cross section also allows for more coils per spring while providing a greater amount of spring travel to solid when compared to competitor springs.
Modified trapezoidal cross section of rectangular wire springs changes to a “D” cross section during coiling to achieve a low stress level that means longer spring life.
Physical Dimensions and Load Ratings
Computer controlled coiling and spring setting equipment allow tight control over the critical spring characteristics. Every manufactured lot of DieMax XL® springs is carefully inspected for hole/rod fit, free length, spring rate, solid height, squareness and physical appearance. All inspection results are recorded and analyzed to ensure compliance to quality standards. These tight tolerances and highly inspected attributes guarantee the springs will work freely over the rods or freely in the holes specified without binding. They also ensure that the free lengths, solid heights and spring loads are compatible from spring to spring and lot to lot for predictable, long-life performance.
Ends of each spring are closed and ground square to assure that the spring will stand on either end and provide a maximum bearing surface.
Manufacturing Processes
In addition to the optimal, low-stress spring design, the continual investment in the most advanced coiling and spring processing equipment allows Danly to offer a premium, long-life, mechanical spring solution. From the computer controlled spring coilers with in-line SPC data collection, the springs are routed through a series of steps including shot peening to reduce working stresses, and set removal which ensures the spring length and load will not relax in the tool.
Using the latest in CNC coiling technology, springs are produced with much better predictability and consistency in performance, rates and lengths.
Operators use Statistical Process Control (SPC) software to ensure that every production process meets our high quality standards.
Spring testers track and verify consistency in spring dimensions and rates with custom spring testing software.
ISO Maximum Life Springs
Six load classifications – in standard ISO sizes for dies, jigs, fixtures, and general tool work.
Danly springs are offered in a range of lengths, diameters, and load classifications that conform to the ISO 10243 International Standard and the NAAMS (North American Automotive Metric Standard), including color coding for easy identification of load range.
ISO 9001:2015 Registered Quality
All of our Danly die springs are manufactured to ISO 9001:2015 quality standards consistent with the Danly reputation for providing the stamping industry with the most carefully engineered diemakers’ supplies. Comparison testing of the operating life of Danly die springs and competitive products have shown that Danly springs offer significantly longer life.
The exceptional quality of Danly die springs has made them popular for a wide variety of applications. For example, Danly die springs are commonly used in general tool work, such as jigs and fixtures, as well as in industrial clutches and brakes and as components in farm machinery and aircraft mechanisms. Many manufacturers specify Danly die springs because the quality and service life of these springs improves the reliability and performance of their products.
Whatever your application might be, you can be sure that the springs you select from this catalog will consistently provide rugged, dependable spring performance. They will live up to the Danly reputation for quality and value.
For help with your selection, or to order die springs, contact Danly or your authorized Danly distributor.
JIS Maximum Life Springs
Metric springs conform to the Japanese Industrial Standards (JIS)
For years, we have manufactured high quality springs in all standard ISO sizes and a series of round wire springs, following ISO 9001:2015 quality standards – all in inch sizes. With the springs in this catalog, we are making available a line of true-metric springs, in all the standard JIS sizes and colors.
This extension of the spring line gives more options to customers with exacting requirements, and best of all, makes them available from the same reliable source as the inch springs. If you need help finding a specific heavy-duty compression spring, give us a call.
R-Series Springs
- Inch sizes manufactured to industry standard colors
- Yields reliable, trouble-free performance
- Manufactured in an ISO 9001:2015 certified facility
- Manufactured from premium spring quality high-tensile strength steel in accordance with ASTMA A1000-99 specifications
- Optimal rectangular wire design
Also available
- Spring Cages
- Spring Retainers
- Spring Guards
- Custom Special Springs
Utility Springs and Lamina Spring Kits
A wide assortment of round wire, compression, extension, square wire springs, and steel fixture springs are available.
See the Utility Springs catalog for spring specifications.
Utility springs are also available in Utility Spring Assortment Kits.
Lamina spring kits are in demand by tool makers, machine builders and machine service technicians.
Marsh Mellow Die Springs by Firestone
The Marsh Mellow® Die Spring is a proven cost saver for the metal stamping industry. These springs can be used as a maintenance free replacement for costly self contained nitrogen gas cylinders. The unique construction elements are the secret of the spring's design flexibility. The spring's solid rubber core with hollow center and bias-ply fabric wrap are combined to meet special load and performance requirements. When designed into proper applications, these springs can give greater than 1 million cycles.
See the Marsh Mellow® Die Springs catalog for specifications and technical guide.
Formathane Urethane
What is FORMATHANE?
FORMATHANE is a high-quality line of advanced urethane compounds and products, chemically engineered for the metalforming and fabricating industry.
What makes FORMATHANE more than just another urethane?
First, the knowledge and experience that we have gained through our business life has been directed into FORMATHANE. Next, FORMATHANE starts with the finest raw materials, then processes them using state-of-the-art casting equipment to produce urethane compounds with consistent physical and dynamic properties.
The result
FORMATHANE compounds offer the ultimate in tensile strength, abrasion and tear resistance, load-bearing capabilities, and compression-set properties.
Formathane® Urethane is specially engineered to withstand the rigors of metalforming. It has superior cut, puncture, and abrasion resistance and will not break down leaving particulate debris. Formathane® is corrosion resistant and is unaffected by oil, chemicals, and solvents. Formathane® is available in industry standard shapes and sizes.
Formathane® Die-Cover film prevents die-marks on decorative and pre-painted metals while using your existing dies. Die-cover film is ideal for use in press-brake forming. Die-cover film is available in thicknesses of 0.020” and 0.031” and roll widths of 4, 6, 8, 12 and 36 inch.
NAAMS headed strippers and closed-end strippers allow for custom matching of the stripper face to punch shape. Formathane® strippers provide high blank-holding pressure on the downward press stroke and stripping pressure on upstroke; this results in less jamming of blanks. The NAAMS headed strippers are available with backing plate sets.
Formathane® Urethane is also available as light, medium and heavy duty springs, solid bars, solid rods, sheets, and slabs. Sheets and slabs are ideal for V forming, embossing and for use as pressure pads.
See the Formathane® Urethane catalog for product specifications and engineering data.
Die Spring Cages
Lamina die spring cages are a natural addition to the Lamina spring collection. Die spring cage sizes are available for die spring sizes up to a 2 inch diameter and 12 inches long. Die spring cages enhance die spring life by providing a flat, hardened die pocket for spring operation. Spring cages are case hardened cold rolled steel with a black oxide finish. Lamina die spring cages conform to NAAMS standards. Die spring cages are in stock and ready to ship.
See the DieMax™ L Die Springs catalog for complete Die Spring Cage specifications.
JIS Die Springs
JIS Die springs are available in metric sizes from 10 to 60 mm in diameter up to 305 mm in length. Our JIS Die Springs meet the Japanese Industrial Standards (JIS) for die springs. JIS die springs are stocked in all 5 standard color load ratings and sizes.
The JIS Die Springs are manufactured to industry standard colors of yellow, blue, red, brown, and green. Five load ratings are available from extra light load to extra heavy load. The JIS Die Springs are available in small boxed quantities for your convenience. A complete selection is available in stock.
See the JIS Springs catalog for die spring specifications.
Special Heavy Duty Compression Springs
Our heavy duty compression springs can be made custom to your requirements. Compression springs can be made to unique physical characteristics such as shaped wire, special material, and with critical tolerances. Our springs can be manufactured to military specs and can include special inspections and certified testing. Springs can be produced plain, coated, plated, and painted to your specifications.
| Minimum | Maximum | |
|---|---|---|
| Outside Diameter | 3/8" (9.5mm) | 3" (76mm) |
| Free Length | ½" (12.7mm) | 36" (914.4mm) |
| Round Wire Diameter | 0.043" (1.1mm) | 0.5" (12.7mm) |
| Rectangular Wire | 0.040"x0.070" (1x1.8mm) | 0.375"x0.469" (9.5x11.9mm) |
Custom Springs
A custom spring is any spring that has:
- Unique physical attributes
- Special wire material, plating or paint
- Custom free lengths, diameters, solid heights, rates, number of coils or custom loads at a given deflection
- Critical tolerances
- Specific inspection or certification requirements
- Military specifications
- 100% inspection of critical characteristics
- Statistical reports
- Computer controlled mult-point tests
Manufacturing Capabilities
- Outside diameters from 3/8" to 3" (9.5mm to 76.2mm)
- Free length from 1/2" to 36" (12.7mm to 914.4mm)
- Round Spring wire from 0.043" to 0.500" (1.1mm to 12.7mm)
- Standard rectangular wire up to 0.375" x 0.469" (9.5mm to 11.9mm)
Modified trapezoidal cross section of rectangular wire springs changes to a "D" cross section during coiling to achieve a low stress level that means longer spring life.
Coatings Available
- Plain, no paint
- Oiled
- Cadmium Plate
- Dacromet®
- Electroless Nickel
- Any Paint Color
- Powder Coating
- E-coat
- Zinc
Spring Specials Quoting Process
- Submit custom spring print
- Submit application information
- Include description of application
- Life expectations
- Critical dimensions, tolerances, certifications required
JIS Die Springs
Metric springs conform to the Japanese Industrial Standards (JIS)
For years, we have manufactured high quality springs in all standard ISO sizes and a series of round wire springs, following ISO 9002 quality standards – all in inch sizes. With the springs in this catalog, we are making available a line of true-metric springs, in all the standard JIS sizes and colors.
This extension of the spring line gives more options to customers with exacting requirements, and best of all, makes them available from the same reliable source as the inch springs. If you need help finding a specific heavy-duty compression spring, give us a call.
DieMax XL Maximum Life Springs
Springs you can rely on
A combination of enhanced raw material, optimal spring design, innovative manufacturing processes, and broad distribution channels allow the DieMax XL® spring to yield the best, most dependable performance and availability combination, time after time.
Spring Wire
Danly springs are manufactured from premium spring quality steel. The high tensile strength and superior heat resistance wire characteristics contribute to the low-stress, long life spring design.
Enhanced Design
Our spring starts with a modified trapezoidal cross section and changes to a “D” cross section after coiling. This wire cross section has significantly lower stress levels during compression compared to competitor designs. The “D” cross section also allows for more coils per spring while providing a greater amount of spring travel to solid when compared to competitor springs.
Modified trapezoidal cross section of rectangular wire springs changes to a “D” cross section during coiling to achieve a low stress level that means longer spring life.
Physical Dimensions and Load Ratings
Computer controlled coiling and spring setting equipment allow tight control over the critical spring characteristics. Every manufactured lot of DieMax XL® springs is carefully inspected for hole/rod fit, free length, spring rate, solid height, squareness and physical appearance. All inspection results are recorded and analyzed to ensure compliance to quality standards. These tight tolerances and highly inspected attributes guarantee the springs will work freely over the rods or freely in the holes specified without binding. They also ensure that the free lengths, solid heights and spring loads are compatible from spring to spring and lot to lot for predictable, long-life performance.
Ends of each spring are closed and ground square to assure that the spring will stand on either end and provide a maximum bearing surface.
Manufacturing Processes
In addition to the optimal, low-stress spring design, the continual investment in the most advanced coiling and spring processing equipment allows Danly to offer a premium, long-life, mechanical spring solution. From the computer controlled spring coilers with in-line SPC data collection, the springs are routed through a series of steps including shot peening to reduce working stresses, and set removal which ensures the spring length and load will not relax in the tool.
Using the latest in CNC coiling technology, springs are produced with much better predictability and consistency in performance, rates and lengths.
Operators use Statistical Process Control (SPC) software to ensure that every production process meets our high quality standards.
Spring testers track and verify consistency in spring dimensions and rates with custom spring testing software.
ISO Maximum Life Springs
Six load classifications – in standard ISO sizes for dies, jigs, fixtures, and general tool work.
Danly springs are offered in a range of lengths, diameters, and load classifications that conform to the ISO 10243 International Standard and the NAAMS (North American Automotive Metric Standard), including color coding for easy identification of load range.
ISO 9001:2015 Registered Quality
All of our Danly die springs are manufactured to ISO 9001:2015 quality standards consistent with the Danly reputation for providing the stamping industry with the most carefully engineered diemakers’ supplies. Comparison testing of the operating life of Danly die springs and competitive products have shown that Danly springs offer significantly longer life.
The exceptional quality of Danly die springs has made them popular for a wide variety of applications. For example, Danly die springs are commonly used in general tool work, such as jigs and fixtures, as well as in industrial clutches and brakes and as components in farm machinery and aircraft mechanisms. Many manufacturers specify Danly die springs because the quality and service life of these springs improves the reliability and performance of their products.
Whatever your application might be, you can be sure that the springs you select from this catalog will consistently provide rugged, dependable spring performance. They will live up to the Danly reputation for quality and value.
For help with your selection, or to order die springs, contact Danly or your authorized Danly distributor.
JIS Maximum Life Springs
Metric springs conform to the Japanese Industrial Standards (JIS)
For years, we have manufactured high quality springs in all standard ISO sizes and a series of round wire springs, following ISO 9001:2015 quality standards – all in inch sizes. With the springs in this catalog, we are making available a line of true-metric springs, in all the standard JIS sizes and colors.
This extension of the spring line gives more options to customers with exacting requirements, and best of all, makes them available from the same reliable source as the inch springs. If you need help finding a specific heavy-duty compression spring, give us a call.
R-Series Springs
- Inch sizes manufactured to industry standard colors
- Yields reliable, trouble-free performance
- Manufactured in an ISO 9001:2015 certified facility
- Manufactured from premium spring quality high-tensile strength steel in accordance with ASTMA A1000-99 specifications
- Optimal rectangular wire design
Also available
- Spring Cages
- Spring Retainers
- Spring Guards
- Custom Special Springs
DieMax L Die Springs
DieMax™ L Die springs are available in sizes from 3/8 to 2 inch diameter up to 12 inches in length. The DieMax™ L Die Springs are manufactured to industry standard colors, are made from high tensile strength chrome silicon material, and manufactured in an optimal rectangular wire design. Medium, medium heavy, heavy, and extra heavy duty die springs are available. The Lamina manufactured DieMax™ L Die Springs are available in small boxed quantities for your convenience. A complete selection is available in stock.
See the DieMax™ L Die Springs catalog for die spring specifications.
Die Springs
Die Springs Product Features
- Same day shipments – we stock them so you don't have to
- Inch sizes manufactured to industry standard colors
- Reliable, trouble-free performance
- Manufactured in an ISO 9001:2015 certified facility
- Manufactured from spring-quality Chromium Silicon alloy, high-tensile strength steel in accordance with ASTMA A1000-99 specifications
- Optimal rectangular wire design
Custom Springs
A custom spring is any spring that has:
- Unique physical attributes
- Special wire material, plating or paint
- Custom free lengths, diameters, solid heights, rates, number of coils or custom loads at a given deflection
- Critical tolerances
- Specific inspection or certification requirements
- Military specifications
- 100% inspection of critical characteristics
- Statistical reports
- Computer controlled multi-point tests
Urethane Stripping & Forming Products
Sheets, Rods, Bars, Tubes, Springs
Closed End Punch Strippers
Closed End Urethane Strippers assure positive stripping and at the same time dampen punch vibration by gripping around the punch point. Since vibration can lead to premature punch failure, using DAYTON PROGRESS Urethane Strippers will increase overall punch life. The closed end feature holds thin stock flat during the stripping cycle, eliminating the problem of damaging the stock strip.
And that's not all...
Because of a unique curing agent, DAYTON's Urethane Strippers develop more load-bearing capacity than similar urethanes. This special curing agent also contributes to consistent pressure ratings.
SMART-Strip™ Hard Face / Dual Durometer Urethane Strippers
A DAYTON PROGRESS Exclusive
- Stamping shapes in thin material?
- Stamping pre-painted material?
- Short runs?
- Piercing on angles or complex contours?
- ...Any application where using a metal spring stripper is problematic or just not cost effective.
The answer is the new SMARTStrip. Available only from DAYTON PROGRESS.
The body of the closed-end punch stripper is made of fl exible, softer urethane elastomer 95A, enabling defl ections up to 15%.
The 75D durometer hard face is elastic, durable and does not mark the surface of the sheet metal or prepainted material.
The SMARTStrip works similar to a metallic spring stripper plate that is machined to match the face of the punch tip.
Unlike strippers that have a piece of plastic or metal glued to the end, the hard face on the SMARTStrip can not separate from the body.
Headed Strippers
- Designed to comply with NAAMS™ (North American Automotive Metric Standard) & FORD World Standard.
- The headed design prevents the strippers from falling into die.
- Fits most makes of standard retainers for head type and ball lock type punches. Standard durometer: 95A
Headless Strippers
- Ideal for punching odd shaped holes.
- Assure positive stripping.
- Increases punch life, as punch stripper supports the punch tip, by dampening the vibration of the punch, as it pierces the sheet metal.
Sheets, Rods & Bars
Urethane bars are specially-molded die-pads for press brake bending applications. Rods are used as strippers, pressure cylinders, in bulging applications, as tube bending mandrels, & for machining.
Springs/Tubes
Advantages of urethane springs, open end strippers and tubes:
- High pressures
- Closer center distances
- High tear resistance
- Oil resistant
- Punch vibration dampening
- Easy installation and replacement - No need for set screws or stripper bolts
- No shrapnellizing (flying to pieces, when fractured under load) thus preventing injury to worker and damage to the die.
- Conventional heavy duty die springs obtain up to 500 lbs. per 1/8” deflection, compared to 2600 lbs. per 1/8” deflection on urethane springs.
NAAMS Standard
High load-bearing capacity, extraordinary toughness and high impact resistance characterize Dayton NAAMS™ compliant strippers. These features provide high stripping pressure, minimize abrasion and provide excellent wear resistance. The urethane compound prevents marring of metal surfaces and is perfect for pre-painted materials where the integrity of the surface can not be compromised.
MaxLife Die Springs
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, 91
- Light Load, Blue, 92
- Medium Load, Red, 93
- Heavy Load, Green, 94
- Extra Heavy Load, Brown, 95
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%
