ISRI

Die Spring Calculator Module

Die Spring Calculator

Calculate rectangular wire die spring rate, load, and stress. Supports ISO 10243, JIS B5012 standards and custom rectangular sections.

Design Rules (Geometry & Proportion)
Fail

Geometry rules violated

Outer Diameter OD
外径 OD
25.00 mm
Mean Diameter Dm
中径 Dm
23.00 mm
Equivalent Wire Diameter d_eq
等效线径 d_eq
2.828 mm
Spring Index (Dm/t)
弹簧指数 (Dm/t)
11.50
b/t Ratio
b/t 比
2.00
Spring Rate k
刚度 k
6.206 N/mm
Load @ Working Length
工作长度载荷
99.30 N
Travel (L0 - Lw)
行程 (L0 - Lw)
16.00 mm
Max Stress σ
最大应力 σ
117.6 MPa
Stress / Yield
应力/屈服比
8.4 %
Compression Ratio
压缩比
25.0 %
Slenderness (L0/Dm)
细长比 (L0/Dm)
2.78
Hole Clearance (Hole - OD)
孔间隙 (孔径 - OD)
0.00 mm
Inner Diameter ID
内径 ID
17.00 mm
Rod Clearance (ID - Rod)
杆间隙 (ID - 杆径)
4.50 mm
Solid Height Hs
固高 Hs
16.00 mm
✗ Hole clearance too small: 0.00mm < 0.5mm / 孔间隙过小: 0.00mm < 0.5mm
Suggestion / 建议
Risk of friction, heat build-up, and premature failure. Increase clearance.
存在摩擦、发热和早期失效风险。增加间隙。
Design rules evaluate geometric feasibility only. They do not guarantee engineering safety.
Die Spring CalculatorV2

ISO 10243 Standard Catalog / Custom Geometry

📋 ISO 10243 Catalog Selection

International standard for die springs

Select spring size specification

Select color/load class

Catalog recommended stroke

Please select a spring from catalog
SEOSSpring Engineering Operating System
SAFETY
DELIVERABILITY

Design Viable

All checks passed.

Fatigue SF
-
Spring Index
0.0
Energy (J)
-
Full Coverage
0/0
Total Coverage
0/0
Rate k
6.206 N/mm
Index C
0.00
Wahl Factor
1.000
Free Length L0
64.0 mm
CONCEPT

Engineering Assumptions

This analysis is for reference. Physical testing is mandatory before production.

Engineering Requirements / Deliverability
Standard

Tolerances, assembly, surface, environment & lifespan (does not affect calculations)

Inspection & Gauge Strategy
OPTIONAL
FACTORY QUOTE STATUSSAFE TO QUOTE

Profile not configured. Safe-to-Quote gate is inactive.

All capabilities verified.
QUALITY OS

Decision Board

Automated engineering audit for quote risk assessment.

✓SAFE TO QUOTE
PASS
Geometry & Tolerance

Can it be assembled?

PASS
Material & Heat Treatment

Is the material reliable?

PASS
Engineering Safety

Will it perform safely?

PASS
Manufacturing

Can factory produce it?

PASS
Compliance & Delivery

Can we deliver?

Quality OS is a decision-support system for spring manufacturers. It structures your engineering judgment but does not replace your factory-specific process expertise.

Die Spring Calculator & 3D Model | Rectangular Wire, Closed & Ground Ends