Suspension Springs: Natural Frequency 50-2000 Hz

Component Specifications

Definition

Suspension springs in accelerometers are specialized mechanical components designed to suspend the seismic mass within the device, allowing it to move relative to the housing in response to acceleration. These springs provide the restoring force that returns the mass to its neutral position, enabling precise measurement of linear or angular acceleration through displacement detection systems like capacitive, piezoelectric, or optical sensors. They are engineered to maintain specific natural frequencies, damping characteristics, and linearity across operational ranges.

Working Principle

Suspension springs operate on Hooke's Law (F = -kx), where applied acceleration forces cause displacement of the seismic mass proportional to the acceleration magnitude. The spring's stiffness (k) determines the system's natural frequency and sensitivity. In accelerometers, these springs are precisely calibrated to provide predictable, repeatable mechanical response while minimizing cross-axis sensitivity, hysteresis, and temperature-induced variations.

Materials

Beryllium copper (C17200), Stainless steel (17-7PH, 316L), Nickel alloys (Inconel 718), Titanium alloys (Ti-6Al-4V), Silicon (for MEMS devices), with specific requirements: tensile strength 800-2000 MPa, fatigue resistance >10^7 cycles, corrosion resistance per ASTM standards, thermal stability coefficient <50 ppm/°C.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hysteresis	<0.5% FS
Fatigue Life	>10^8 cycles
Linearity Error	<1% FS
Spring Constant	10-500 N/m
Natural Frequency	50-2000 Hz
Maximum Displacement	±0.1-2.0 mm
Operating Temperature	-40°C to +125°C
Cross Axis Sensitivity	<3%

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 5348:1998, ISO 16063-21:2003, DIN 45669-1, ASTM E2309/E2309M

Parent Products

This component is used in the following industrial products

Accelerometer

An accelerometer is a motion sensor component that detects and measures acceleration forces, including static gravity and dynamic motion-induced forces.

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Triaxial Accelerometer

A sensor that measures acceleration along three orthogonal axes (X, Y, Z) simultaneously.

View Product Details

Engineering Analysis

Risks & Mitigation

Fatigue failure under cyclic loading
Creep deformation at elevated temperatures
Corrosion in harsh environments
Resonance at specific frequencies
Hysteresis effects reducing measurement accuracy

FMEA Triads

Trigger: Material fatigue from continuous vibration
Failure: Spring fracture leading to complete accelerometer failure
Mitigation: Implement fatigue testing per ASTM E466, use materials with proven fatigue resistance, design with safety factors >3

Trigger: Temperature variations exceeding design limits
Failure: Spring constant drift causing measurement inaccuracies
Mitigation: Use temperature-stable materials, implement thermal compensation algorithms, design for specified operating range with margin

Trigger: Corrosive environment exposure
Failure: Material degradation reducing spring performance
Mitigation: Select corrosion-resistant materials, apply protective coatings, specify proper sealing in housing design

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Spring constant tolerance ±5%, dimensional tolerance ±0.01 mm, frequency response within ±2% of specified range

Test Method

Resonant frequency testing per ISO 5348, spring constant verification via calibrated mass loading, fatigue testing per ASTM E466, environmental testing per MIL-STD-810

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Suspension Springs

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

ChinaCustomSpring

Ningbo, Zhejiang, CN

Also makes: Constant Force Spring, Compression Spring, Extension Spring and 2 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Types of Suspension Springs”
View source page ↗ chinacustomspring.com · checked 2026-09-10

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of suspension springs in accelerometers?

Suspension springs provide controlled mechanical support for the seismic mass, allowing precise displacement in response to acceleration while maintaining alignment and returning the mass to neutral position.

How do material choices affect accelerometer spring performance?

Material selection determines critical parameters including spring constant stability, temperature coefficient, fatigue resistance, and corrosion resistance, directly impacting measurement accuracy and device longevity.

What standards govern accelerometer suspension spring manufacturing?

Key standards include ISO 5348 for vibration testing equipment, ISO 16063-21 for vibration calibration methods, and DIN 45669 for vibration measurement instrumentation requirements.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Suspension Springs