Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs
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Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould SpringsCompression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs

Compression Die Spring OD 20 22 25mm Light/Medium/Heavy Load Mold Mould Springs

HomeDIYer
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By HomeDIYer®

Price:
$5.47 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Compression Die Springs for Mold & Tooling — Color-Coded Load Ratings, OD 20/22/25mm

When a mold fails mid-run or a stamping die loses its return force, the culprit is almost always an undersized or worn-out compression die spring. Engineers, toolmakers, and machine builders who need a reliable, interchangeable spring solution will find these compression die springs sized and rated to match real-world mold and die applications — without guesswork.

Each spring is a round-wire coil compression die spring available in three outer diameters — 20mm (≈0.79 in), 22mm (≈0.87 in), and 25mm (≈0.98 in) — with matching inner diameters of 10mm, 11mm, and 12.5mm respectively. Free lengths range from 20mm to 200mm (≈0.79–7.87 in) depending on the OD and load grade selected. Five color-coded load grades follow the ISO 10243 / JIS B 5012 standard: Yellow TF (lightest), Blue TL (light), Red TM (medium), Green TH (heavy), and Brown TB (super heavy).

Typical use cases include injection mold stripper plates and ejector return systems, progressive stamping die lifters and strippers, fixture clamping and workholding return mechanisms, and general industrial automation where a compact, repeatable spring force is required.

⚙️ Compatible with ISO 10243 / JIS B 5012 standard die spring pockets. Fits spring pockets sized for OD 20mm, 22mm, or 25mm. Verify free length and load grade before ordering.

✅ Key Features of These Compression Die Springs

🎨 5 Color-Coded Load Grades

Yellow (TF), Blue (TL), Red (TM), Green (TH), and Brown (TB) follow ISO 10243 / JIS B 5012 for instant visual identification on the shop floor.

📐 3 Outer Diameter Options

OD 20mm × ID 10mm, OD 22mm × ID 11mm, and OD 25mm × ID 12.5mm — covering the most common mold and die spring pocket sizes.

📏 Wide Length Range

Free lengths from 20mm up to 200mm (varies by OD and grade), giving you flexibility to match stroke requirements without custom orders.

🔄 Consistent Return Force

Round-wire coil construction maintains predictable spring rate across the working deflection range, reducing cycle-to-cycle variation in mold and stamping operations.

🔩 Drop-In Replacement Geometry

Standardized OD/ID dimensions allow direct substitution in existing spring pockets without pocket rework, minimizing downtime during maintenance.

🏭 Broad Application Coverage

Suitable for injection molds, stamping dies, fixture clamps, and automation return mechanisms — one spring family for multiple machine types.

📐 Technical Specifications — Compression Die Springs

Spring Type Round-wire coil compression die spring
Standard ISO 10243 / JIS B 5012 (color-coded load grades)
Outer Diameter (OD) 20mm / 22mm / 25mm (see variant options)
Inner Diameter (ID) 10mm / 11mm / 12.5mm (matched to OD)
Free Length 20mm – 200mm (see variant options)
Load Grade / Color TF Yellow / TL Blue / TM Red / TH Green / TB Brown (see variant options)
Wire Shape Round wire
Material See variant options
Surface Finish See variant options
Max Deflection Rate See variant options
Unit Sold 1 piece per order

❓ Frequently Asked Questions

How do I choose the right load grade (color) for my application?

Match the load grade to your required spring force at working deflection. Yellow TF is the lightest and suits applications needing minimal return force (e.g., light stripper plates). Blue TL and Red TM cover moderate loads for general mold ejection. Green TH and Brown TB handle heavy-duty stamping and high-force clamping. If you know your required load in Newtons at a specific deflection, compare it against the spring rate for the chosen OD and grade — contact us if you need help selecting.

How do I select the correct outer diameter and length?

Measure your existing spring pocket diameter and depth. The spring OD should match the pocket OD (20mm, 22mm, or 25mm). The free length should be long enough to provide the required working stroke — typically free length = working length + desired deflection. Use the variant selectors above to choose OD × ID first, then the free length.

Are these springs interchangeable with other ISO 10243 / JIS B 5012 die springs?

Yes. These springs follow the ISO 10243 / JIS B 5012 standard dimensional and color-coding system, making them dimensionally interchangeable with other compliant die springs of the same OD, ID, and free length. Always verify the load grade color matches your original spring before installation.

What is the maximum deflection I should use in service?

For longest service life, limit working deflection to approximately 20–30% of free length for heavy-duty grades (TH, TB) and up to 30–40% for lighter grades (TF, TL, TM). Exceeding the rated maximum deflection will accelerate fatigue and reduce spring life. Contact us to confirm the rated deflection for your specific size and grade.

Can these springs be used in high-temperature environments?

Standard die springs are designed for typical mold and stamping operating temperatures. If your application involves elevated temperatures (above approximately 120°C / 250°F), please contact us to confirm material suitability for your specific conditions before ordering.

How do I know which size to reorder if I have an existing spring?

Measure the outer diameter, inner diameter, and free length of your existing spring with calipers. Note the color (load grade). Then select the matching OD × ID and free length from the variant dropdowns above. If your existing spring is worn or set, measure a new reference spring or consult your mold drawing for the original specification.

Is one piece included per order, or is it a pack?

Each order is for one (1) individual spring. If you need multiple springs for a mold or die set, simply increase the quantity at checkout. Bulk pricing may be available — contact us for volume inquiries.

🛒 Select your Color (load grade), Size (OD × ID), and Length above, then add to cart.

 

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