Views: 0 Author: Site Editor Publish Time: 2026-04-03 Origin: Site
Title: Manual Spring Tension and Pressure Tester – Precision Measuring Testing Instrument by Mikrosize
Introduction
Springs are essential components in countless mechanical systems, from automotive engines to medical devices. Testing their force and deformation characteristics is critical for safety and performance. The Manual Spring Tension and Pressure Tester from Mikrosize – a trusted supplier of hardness testers, video measuring machines, microscopes, and metallographic equipment – provides a reliable, cost-effective solution. As a specialized Measuring Testing Instrument, it accurately measures tension, compression, stiffness (spring constant K), and displacement for various springs, including cylindrical, disc, tower, snap, leaf, and irregular shapes. This article details its features, parameters, applications, and why Mikrosize is your ideal partner for quality control.
What Is a Manual Spring Tension and Pressure Tester?
This Measuring Testing Instrument evaluates the load-deformation relationship of tension and compression springs through manual operation. Unlike expensive motorized testers, the manual version offers simplicity, portability, and direct control, making it perfect for small-to-medium production, R&D labs, and field inspections. The Mikrosize tester handles springs up to 150 mm free length (customizable longer) and provides high-precision force and displacement readings. It determines spring qualification based on either: (1) measuring force at a given deformation/height, or (2) measuring deformation at a given force. Segmented measurement allows calculation of stiffness (K) for each segment and average stiffness.
Why Choose Mikrosize as Your Measuring Testing Instrument Supplier?
Mikrosize is renowned for hardness testers (Rockwell, Brinell, Vickers, Leeb), video measuring machines (VMMs) with sub-micron accuracy, metallurgical microscopes, and complete metallographic preparation systems. Adding the manual spring tester to our portfolio reinforces our commitment to being a one-stop shop for all testing needs. Every Measuring Testing Instrument from Mikrosize features rigorous calibration, durable construction, and responsive support. Our spring tester delivers ±1% force accuracy, 0.01 mm displacement resolution, and Class 1 performance – backed by global warranty.
Functional Features
Force-at-Displacement (H) Testing – Compress or extend the spring to a preset height H, then read the force F. Compare with tolerance limits to accept or reject the spring. Ideal for valve springs, clutch springs, etc.
Displacement-at-Force (F) Testing – Apply a specified force F and measure the resulting deformation H. Check if H falls within allowed range. Perfect for applications where force is the primary requirement.
Single or Multiple Tests – Perform one-point go/no-go testing or multi-point characterization (e.g., at 10%, 50%, 90% deflection). Multi-point testing reveals non-linear behavior in progressive-rate springs.
Segmented Measurement and Stiffness Calculation – Divide the total travel into segments. Record initial and final force and displacement for each segment, then calculate local stiffness K = ΔF/ΔH (N/mm). Average stiffness across segments is also provided. Essential for verifying spring rate profiles in automotive suspension or aerospace components.
Technical Parameters
Maximum Test Force: 10N, 50N, 100N, 200N, 300N, 500N, 1000N, 2000N, 3000N, 5000N (custom higher capacities available)
Effective Measurement Range: 1% – 100% of full scale
Test Force Resolution: 0.01N (up to 500N models); 0.05N (1000N and above)
Test Force Indication Error: ±1% (Class 1)
Displacement Resolution: 0.01 mm
Maximum Free Length of Spring: 150 mm (custom extension possible)
Displacement Stroke: 90 mm standard (can be increased)
Pressure Plate Diameter: 48 mm standard (larger sizes available)
Displacement Speed: Manual (handwheel controlled)
Applications Across Industries
Automotive: Valve springs, suspension coils, clutch diaphragms, brake return springs. Ensure correct installed load to prevent engine misfire or uneven ride.
Aerospace: Control cable springs, landing gear disc springs, fuel system check springs. Meet stringent NAS/MS standards with documented data.
Electronics: Battery contacts, SIM ejector springs, keypad domes. The 10N model with 0.01N resolution handles tiny springs perfectly.
Medical Devices: Syringe plunger springs, surgical instrument springs. ±1% accuracy ensures patient safety.
Industrial Machinery: Disc springs in bolted joints, tower springs in shock absorbers. Segmented stiffness helps detect fatigue.
Integration with Other Mikrosize Measuring Testing Instruments
A complete quality lab needs more than spring testing. Mikrosize offers a full ecosystem:
Hardness Testers – Verify wire hardness (Rockwell/Vickers) which correlates with tensile strength and fatigue life.
Video Measuring Machines (VMMs) – Non-contact measurement of spring dimensions: wire diameter, outer/inner diameter, free length, pitch, hook angles.
Metallurgical Microscopes – Examine microstructure for decarburization, inclusions, improper heat treatment.
Metallographic Equipment – Cut, mount, grind, and polish spring samples for microscopic inspection.
All from one trusted brand: Mikrosize.
Advantages of Manual Testers Over Automatic Models
Cost-effective – fraction of the price of motorized systems.
Portable – no external power needed (except optional digital display batteries).
Intuitive – any technician can learn in minutes.
Low maintenance – no motors or encoders to fail.
Sensitive – manual speed allows “feeling” spring buckling or non-linear jumps.
Operation Guide (Simplified)
Mount the spring between plates (compression) or on hooks (tension). Zero the display.
Choose test mode (force-at-height or height-at-force).
Turn handwheel slowly to desired displacement or force value.
Read the corresponding force or displacement.
Compare with specification tolerance. For segmented stiffness, record values at interval endpoints and compute ΔF/ΔH.
Separate pass/fail springs.
Calibration and Maintenance
Calibrate force annually using certified weights (20%, 50%, 80%, 100% of capacity). Adjust if error exceeds ±1%.
Calibrate displacement using a gauge block (e.g., 50.00 mm).
Lubricate lead screw and guides every 6 months with light oil.
Clean pressure plates with soft cloth and isopropyl alcohol.
Store in dry environment to prevent corrosion.
Frequently Asked Questions
Q: Can it test both tension and compression springs?
A: Yes. The standard configuration includes both compression plates and tension hooks.
Q: What capacity do I need?
A: Choose a capacity slightly above your spring’s maximum expected load. For tiny springs (e.g., medical), use 10N model (0.01N resolution). For heavy industrial springs, use 5000N model.
Q: Can I export data to a PC?
A: The standard manual tester has no electronic output, but an optional digital indicator with RS232/USB is available. Please specify when ordering.
Q: How to test a spring longer than 150 mm?
A: Contact Mikrosize for a custom extended frame (up to 300 mm or more).
Q: Is it suitable for high-volume production?
A: Yes for up to 500 springs per shift. For very high volumes, consider our motorized tester.
Q: Does Mikrosize provide training and calibration certificates?
A: Yes. We offer online tutorials, on-site/virtual training, and ISO/IEC 17025 accredited calibration certificates.
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Case Study Brief
A tier-1 automotive valve spring supplier experienced field failures due to inconsistent load at 20 mm compressed height. Their old tester had ±3% error. They purchased a Mikrosize manual spring tester (2000N, 0.01 mm resolution, segmented measurement). Testing 100 springs per batch revealed soft initial segments from improper coiling pitch. Rejecting those springs and adjusting the coiling machine reduced rejection rate from 8% to 1.5%, saving over $200,000 annually. The tester paid for itself in three months.
Conclusion
The Manual Spring Tension and Pressure Tester from Mikrosize is a versatile, accurate, and affordable Measuring Testing Instrument that handles cylindrical, disc, tower, snap, leaf, and irregular springs. With features like force-at-height testing, height-at-force testing, multi-point evaluation, and segmented stiffness calculation, it meets the needs of automotive, aerospace, electronics, medical, and industrial applications. When combined with Mikrosize’s hardness testers, video measuring machines, microscopes, and metallographic equipment, you get a complete quality control solution. Choose Mikrosize for precision, reliability, and expert support.
