Brown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mm
Brown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mm
Brown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mm
Brown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mm
Brown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mm
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Brown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mmBrown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mmBrown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mmBrown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mmBrown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mm

Brown-Extra Heavy Duty Load Compression Spring Die Springs O.D:8-22mm L:20-175mm

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$4.11 USD
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In stock (500 units), ready to be shipped

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Description

Brown Extra Heavy Duty Compression Die Springs — Maximum Load Capacity for Demanding Applications

When standard springs fail under repeated high-load cycles, engineers and toolmakers turn to extra heavy duty die springs. These brown-coded compression die springs are engineered for applications where deflection resistance and fatigue life are non-negotiable — from stamping dies and injection molds to hydraulic presses and industrial fixtures.

These brown extra heavy duty compression die springs are manufactured from high-grade alloy spring steel wire, wound to tight tolerances. Outer diameters range from 8 mm to 22 mm (approx. 0.31" to 0.87"), with free lengths spanning 20 mm to 175 mm (approx. 0.79" to 6.89"). The brown color coding follows the ISO 10243 standard, identifying this series as the highest load class in the die spring range.

Typical use cases include precision stamping die assemblies requiring consistent return force, injection mold ejector pin systems where spring fatigue leads to costly downtime, and heavy-duty industrial press tooling where extra heavy load die springs for CNC machining centers are required. Available in M12 through M22 outer diameters and lengths from 20 mm to 175 mm, these springs cover a wide range of tooling configurations.

⚙️ Compatibility: Designed to ISO 10243 die spring standards. Suitable for use in standard die spring pockets. Verify bore diameter and free length against your tooling drawings before ordering.

✅ Key Features of These Brown Extra Heavy Duty Compression Die Springs

🟤ISO 10243 Brown Color Code
Brown identifies the extra heavy load class — the highest deflection force rating in the standard die spring series, delivering maximum resistance per unit of compression.
🔩Wide Size Range
Outer diameters from 8 mm to 22 mm and free lengths from 20 mm to 175 mm provide broad coverage for stamping, molding, and press tooling applications.
🛡️Alloy Spring Steel Construction
Wound from high-grade alloy spring steel for superior fatigue resistance, maintaining consistent load characteristics across thousands of compression cycles.
📐Precision Ground Ends
Flat, ground ends ensure even load distribution and stable seating in die spring pockets, reducing lateral deflection and extending tool life.
🔄Consistent Return Force
Engineered for repeatable performance in high-cycle environments — critical for ejector systems, stripper plates, and pressure pads where inconsistent spring force causes defects.
📦Flexible Quantity Options
Available in single-piece or 5-piece packs, allowing you to order exactly what your tooling requires without overstocking.

📐 Technical Specifications — Compression Die Springs

Spring Type Compression Die Spring
Load Class Extra Heavy (Brown)
Color Code Brown (ISO 10243)
Outer Diameter (O.D.) 8 mm – 22 mm (0.31" – 0.87")
Free Length 20 mm – 175 mm (0.79" – 6.89")
Material Alloy Spring Steel
End Type Closed & Ground
Surface Finish See variant options
Inner Diameter (I.D.) See variant options
Wire Diameter See variant options
Max. Deflection Rate See variant options
Operating Temperature Typically up to 180°C (356°F)
Standard ISO 10243
Available Quantities 1 pc / 5 pcs

❓ Frequently Asked Questions

How do I select the correct outer diameter and length for my application?

Match the O.D. to your die spring pocket bore and the free length to the available spring cavity depth. As a general rule, do not exceed 30–35% of the free length as working deflection for extra heavy duty springs. Always refer to your tooling drawings for pocket diameter and depth specifications before selecting a size.

What does the brown color code mean on die springs?

Die springs are color-coded by load class per ISO 10243. Brown indicates the Extra Heavy load class — the highest load rating in the standard range. The load classes from lightest to heaviest are: Light (Yellow), Medium (Blue), Heavy (Red), and Extra Heavy (Brown).

Are these springs corrosion resistant?

These springs are manufactured from alloy spring steel, which offers good mechanical properties but moderate corrosion resistance. For environments with exposure to coolants, oils, or humidity, consider applying a light coating of machine oil during storage. For highly corrosive environments, consult your tooling engineer about alternative materials.

What is the maximum operating temperature for these die springs?

Alloy spring steel die springs are typically rated for continuous use up to approximately 180°C (356°F). Exceeding this temperature can cause permanent set and loss of load capacity. For high-temperature applications above this range, consider springs made from heat-resistant alloys.

Can I use these springs in injection mold ejector systems?

Yes. Brown extra heavy duty die springs are widely used in injection mold ejector pin return systems and stripper plate assemblies where high return force and long fatigue life are required. Ensure the selected O.D. and free length match your mold's spring pocket dimensions and that the working deflection stays within the recommended range.

How do I choose between ordering 1 piece vs. 5 pieces?

If you need a single replacement spring for a specific die position, the 1-piece option is ideal. The 5-piece pack offers better value per unit and is recommended when outfitting a full die set, stocking spares for preventive maintenance, or when multiple spring positions share the same size specification.

What is the difference between a die spring and a standard compression spring?

Die springs are a specialized subset of compression springs designed to ISO 10243 standards for use in metal stamping and molding tooling. They feature tighter dimensional tolerances, higher load ratings per unit of deflection, and superior fatigue life compared to general-purpose compression springs — making them the correct choice for precision tooling applications.

🛒 Select your Type, Outer Diameter × Length, and Qty above, then add to cart.

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