ISRI

Spring Calculator Module

Compression Spring Calculator

Calculate spring rate, load, stress, and buckling safety factors for helical compression springs. Supports 3D preview, fatigue analysis, and engineering-grade design rule checks.

Input Parameters

Helical Compression Spring

Backsolve v2 (Engineering)
mm
Dm

Mean Coil Diameter

中径 Dm = (外径 + 内径) / 2。

mm
Outer Diameter (OD)
27.20mm
Inner Diameter (ID)
20.80mm
Slenderness (L₀/Dm)
2.08
Buckling Risk
LOW(Unguided)
-
mm

Engineering Operations

3D Preview
Stroke0.00 mm
Utilization0.0%
L 40.0
L₀50.0
Hₛ32.0
Dₘ24.0
Manual Stroke Control0.0 mm
Drag slider to physically compress unit
k
Manufacturing Quote GateRequires Clean Audit
Instant Cost Estimation & Work Order Generation (Phase Q1)
1,000
Engineering Audit must be "PASS" or "MARGINAL" to generate a strict quote. Fix stress or solid height failures first.

Input Parameters

Helical Compression Spring

SEOSSpring Engineering Operating System
SAFETY
DELIVERABILITY

Design Viable

All checks passed.

Fatigue SF
-
Spring Index
7.5
Energy (J)
-
Full Coverage
0/0
Total Coverage
0/0
Design Rule Findings
Risk of coil bind / solid height
50.000WARN
Static safety factor is below limit
0.000FAIL

Please adjust design parameters to resolve these issues.

琴钢丝 (ASTM A228)music_wire_a228
Rate k
9.399 N/mm
Index C
7.50
Wahl Factor
1.197
Free Length L0
50.0 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.

Variable Pitch Compression Spring

Moved to an independent tool page to avoid shared state conflicts.

Use the dedicated tool for segmented pitch input, multi-point checks, curves, and report export.

Open Tool
Compression Spring Calculator | Rate, Stress, Buckling & Coil Bind Analysis