Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring
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Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression SpringCompression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring

Compression Rate 60% Heavy Duty Stiff Heavy Load Die Spring Compression Spring

HomeDIYer
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By HomeDIYer®

Price:
$3.92 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Die Spring Compression Spring — Heavy-Duty 60% Rate for Demanding Industrial Applications

Engineers and fabricators working with stamping dies, injection molds, and automated machinery know the frustration of springs that fatigue prematurely under cyclic load. This die spring compression spring is engineered for users who need consistent, repeatable force output across thousands of cycles without unexpected deflection or set.

Each spring is manufactured from high-carbon chromium alloy steel with a rectangular cross-section wire profile, which maximizes the load-bearing surface area compared to round-wire coil springs. Outer diameters range from 10.5 mm (≈0.41 in) to 43 mm (≈1.69 in), with corresponding inner diameters from 6 mm (≈0.24 in) to 31 mm (≈1.22 in). Available lengths span 15 mm (≈0.59 in) to 300 mm (≈11.81 in) to suit a wide range of stroke requirements.

Typical use cases include precision die spring replacement in progressive stamping dies, spring-loaded guide pins in injection mold tooling, and preload elements in heavy-load linear actuators and robotic end-effectors. The 60% compression rate classification (heavy load / red-equivalent) makes these die spring compression springs the right choice when a standard light or medium spring would bottom out or lose set under sustained force.

⚙️ Compatibility: Fits standard ISO 10243 and JIS B 5012 die spring pocket dimensions. Verify outer diameter, inner diameter, and free length against your tooling drawing before ordering.

✅ Key Features of These Die Spring Compression Springs

🔴
60% Compression Rate — Heavy Load
Red-grade heavy-duty classification delivers high spring force per unit deflection, resisting set under sustained cyclic loading in stamping and forming operations.
📐
Rectangular Wire Cross-Section
Flat-wire coil geometry increases contact area and load capacity compared to round-wire springs of the same envelope, enabling a more compact die pocket design.
🛡️
Corrosion-Resistant Surface Treatment
Springs are shot-peened and surface-treated to extend fatigue life and resist oxidation in coolant-exposed tooling environments.
📏
Wide Size Matrix
Nine outer-diameter groups (10.5 mm to 43 mm) combined with up to 32 length options per group give engineers precise control over spring rate and stroke without custom tooling.
⚖️
Rated Bearing Load per Variant
Each size is rated from 7 KG to 60 KG bearing weight, clearly specified per variant so you can match spring selection to your calculated load requirement without guesswork.
🔁
ISO / JIS Die Spring Standard Compliance
Dimensioned to ISO 10243 and JIS B 5012 interchangeable standards, making these a direct drop-in replacement for worn or broken die springs in existing tooling.

📐 Technical Specifications — Die Spring Compression Spring

Spring Type Rectangular-wire die spring (compression)
Compression Rate Class 60% — Heavy Load (Red Grade)
Wire Cross-Section Rectangular (flat wire)
Material High-carbon chromium alloy steel
Surface Treatment Shot-peened; oxidation-resistant coating
Outer Diameter Range 10.5 mm – 43 mm (≈0.41 in – 1.69 in)
Inner Diameter Range 6 mm – 31 mm (≈0.24 in – 1.22 in)
Free Length Range 15 mm – 300 mm (≈0.59 in – 11.81 in)
Bearing Weight Range 7 KG – 60 KG (see variant options)
Coil Direction Right-hand
Standard Reference ISO 10243 / JIS B 5012
Finish Color Red (heavy-load grade indicator)
End Type Closed and ground
Quantity per Order 1 piece

❓ Frequently Asked Questions

How do I select the correct outer diameter and inner diameter for my die pocket?

Measure the pocket bore diameter in your die plate — this is your maximum outer diameter. Then measure the guide pin or mandrel diameter — this is your minimum inner diameter. Choose the variant whose outer diameter fits the pocket with a small clearance (typically 0.5–1 mm per side) and whose inner diameter clears the guide pin by a similar margin. Refer to your tooling drawing for exact tolerances.

What does the 60% compression rate classification mean?

The 60% figure refers to the maximum recommended deflection as a percentage of the free length. For example, a 100 mm free-length spring should not be compressed beyond 60 mm of deflection in service. Operating within this limit preserves fatigue life. The heavy-load (red) grade also indicates a higher spring rate per unit deflection compared to light (yellow), medium (blue), or extra-heavy (brown) grades.

Are these springs corrosion-resistant enough for coolant or wet tooling environments?

Yes. The springs are shot-peened to induce compressive surface stress that resists fatigue cracking, and the surface treatment provides a baseline level of oxidation resistance suitable for typical metalworking coolant exposure. For highly aggressive chemical environments or prolonged immersion, consider applying a supplemental rust-inhibiting oil or selecting stainless-steel springs instead.

Are these die springs compatible with ISO 10243 and JIS B 5012 standard tooling?

Yes. The outer diameter, inner diameter, and free-length dimensions follow ISO 10243 and JIS B 5012 interchangeable standards, making them a direct drop-in replacement for worn springs in existing progressive dies, blanking dies, and forming tools designed to either standard. Always verify the specific size code against your tooling drawing before ordering.

How do I calculate the spring force I need for my application?

Spring force (F) = Spring Rate (k) × Deflection (x). The spring rate for each size is determined by the wire dimensions, coil diameter, and number of active coils. For a quick selection, use the rated bearing weight listed per variant as a reference for the approximate load at the recommended working deflection. For precision engineering calculations, request the spring rate data (N/mm) for your specific size by contacting us.

Can I use a single spring or do I need to order in pairs or sets?

Each order unit is one (1) piece. If your die design requires matched pairs or sets for balanced loading — for example, two springs on opposing guide pins — simply set the quantity to the number of pieces you need at checkout. There is no minimum order quantity beyond one piece per variant.

What is the difference between this heavy-load spring and a medium or extra-heavy spring?

Die springs are graded by load class: light (yellow, ~30% rate), medium (blue, ~40% rate), heavy (red, ~60% rate), and extra-heavy (brown, ~80% rate). A heavier grade spring has a higher spring rate — it requires more force to compress the same distance. Choose heavy (red) when a medium spring would deflect too far under your working load, but extra-heavy is not required. If you are unsure, calculate your required spring rate from your press tonnage and stroke data.

🛒 Select your outer diameter × inner diameter and length above, then add to cart.

 

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