Designs and configurations
Rectangular Die Springs
Rectangular-wire compression springs provide force in a compact mold space. Choose the load curve and permitted stroke before choosing the color code.
Designs and configurations ↓Material options
Spring steel
The final grade and treatment are confirmed after reviewing your drawing and operating conditions.
Dimensions, tolerances, hardness, quantity and delivery are confirmed in the quotation. No fixed stock specification is implied.
Designs and configurations
Select function and geometry, then confirm material, fits and treatment. Options may be combined; dimensions follow the agreed drawing.
Yellow · extra light load
For lighter return duties; verify preload and allowable compression.
Send inquiry now →
Blue · light load
For light-load mechanisms; choose compression travel with the life target.
Send inquiry now →
Red · medium load
Balance return force and space; compare loads only for specified sizes.
Send inquiry now →
Green · heavy load
Higher loads require checks on compression ratio, heat and guidance.
Send inquiry now →
Brown · extra heavy load
High-rate options must stay within the selected series travel limits.
Send inquiry now →Industries and operating scenarios
Die springs (mold springs) serve high-load, short-stroke, repeated compression—injection ejection and return, stamping strippers and pressure pads, and high-load return in fixtures.
Send inquiry now →Typical industries
-
Injection molds -
Stamping dies -
Tooling & fixtures
Materials and treatment options
Rectangular wire packs more force in compact mold space—for ejection, return and holding. Yellow through brown are common load color codes (Japanese-style convention); select from force–travel data per ISO 10243 / JIS—color guides, not replaces, the load spec.
Send inquiry now →
How to choose
Follow load first (not color alone), free length for space and stroke, hole/rod diameter for the mold base, then balance cycle life against load—confirm the series, then use the five color configuration cards.
Send inquiry now →
Family-specific questions
Can die springs be chosen by color only?
No. Colors map to a series convention—select by force–travel curve and allowable compression for the specified size.
Can die springs be customized?
Yes—custom sizes and loads can be built from your drawing or sample, with the applicable standard and mounting dimensions confirmed.
Rectangular die springs vs nitrogen gas springs?
Rectangular springs are wire compression with color-coded load levels; gas springs use sealed nitrogen for controlled high force and longer stroke—different selection logic.
Chat on WhatsApp