Compression testing
Apply preload, establish the test datum and measure a controlled compression stroke with live loading and return curves.
Testing procedure → Compression · Extension · Manual MPG
Every spring leaves
a curve.
STM-X turns force and movement into defensible spring-test evidence—from confirmed preload datum to characterized curve, batch result and report.
- 2
- Automatic test modes
- 1
- Immutable test datum
- 3
- Report evidence pages
Interactive test preview
LIVE CURVE
SIMULATION
Test displacement12.5 mm
Peak load8.75 kgf
Spring rate0.70 kgf/mm
LOAD AT DISPLACEMENTDISPLACEMENT AT LOADSPRING RATELOADING + RETURNBATCH RESULTSEXCEL + PDF
One measurement system
From machine motion to a result you can defend
Every accepted force-position reading stays paired through the live display, curve, raw trace, calculation, recovery and report.
Extension testing
Characterize force, travel, rate and initial-tension behaviour with fixtures suited to spring ends and hooks.
Extension guide →Characterization
Calculate load at displacement, displacement at load, loading rate, return rate, peak values and hysteresis.
See the software →Traceable reporting
Create a consistent three-page report with summary, curve characteristics, evidence and calculation provenance.
Reporting workflow →
Measurement integrity
Machine position is not spring displacement.
STM-X keeps the absolute Machine Z coordinate unchanged and calculates automatic test displacement from the first eligible confirmed preload datum.
| Machine Z − preload datum |
- Nonnegative test-displacement magnitude
- Compression or Extension supplies physical direction
- Datum provenance stays with the trace and report
130125120115110
MACHINE Z125.000mm · absolute coordinate
PRELOAD DATUM · 112.500 mm
12.500 mmTEST DISPLACEMENT
Operator-first software
The complete test stays in one workspace
Recipe, run readiness, live curve, result, evaluation, evidence, batch curves, raw trace and reporting are kept together.
Evidence, not decoration
Request a sample report
A report that shows how the result was obtained
STM-X composes an immutable report model from the completed test. The result does not depend on a live screen staying open.
01
Executive summaryKey measurements, performance curve and characteristics.
02
Visual evidenceCorrelated images with load and displacement context.
03
Calculations & traceabilityFormula locations, units and measurement provenance.
STM-X Knowledge
Spring testing, explained for people who run the test
Practical, versioned guidance grounded in measurement discipline—not keyword-stuffed product copy.
01
Spring testing fundamentals
What is spring testing?
A practical introduction to compression and extension spring testing, the measurements a spring tester records, and what a load-deflection curve reveals.
02 Curve interpretationReading a load–deflection curve
Learn how to interpret seating, the working range, spring rate, peak load, unloading behaviour and anomalies on a spring load-deflection graph.
03 Calculation guideSpring rate calculation
Calculate spring rate from two force-deflection points, understand units, and learn why a defined measurement interval is more reliable than a single-point estimate.
Already using STM-X?