Single-Plane Balancing Calculator
Calculate correction mass and angle with the trial weight method and see the vectors on a polar plot.
Free balancing & vibration calculators
The calculations we use in the field every day, now in your browser. No sign-up, no install — your data never leaves your device.
Two-Plane Balancing Calculator
Calculate correction weights for both planes from two bearings and two trial runs.
Balancing Without Phase: Four-Run Method
Single-plane balancing from vibration amplitude only: fit the trial weight at 0°, 120° and 240° and get the correction weight.
Static and Couple Unbalance Decomposition
Split two-plane correction weights into static and couple (moment) components to see the type of unbalance and whether one plane may be enough.
ISO 21940-11 Balance Tolerance Calculator
Calculate permissible residual unbalance (Uper) from balance grade (G), rotor mass and speed.
Industrial Balancing Machines and Machine Selection
Find the right balancing machine type, capacity class, number of planes and target residual unbalance for your rotor, and learn how the machine types differ.
Balance Weight Splitting Calculator
If a correction weight cannot be placed at the required angle, split it between two adjacent holes or blades.
Why Is My Machine Vibrating? Diagnosis Wizard
Answer five questions; we rank the likely causes of the vibration and suggest the right service.
Vibration Fault Spectrum Simulator
Compare the waveform and spectrum signatures of unbalance, misalignment, looseness, bearing and gear faults.
Resonance & Critical Speed Simulator
Watch the vibration magnification factor and phase shift change with speed for a given natural frequency and damping.
ISO 10816-3 Vibration Severity Evaluator
Evaluate your measured mm/s RMS value in zones A/B/C/D by machine group and foundation type.
Free Vibration Simulator: Mass–Spring–Damper
See the natural frequency, damping and free response of a single-degree-of-freedom system with a live animation.
Shaft Orbit Simulator
Draw the shaft centreline orbit from two orthogonal proximity probes with 1X and 2X components and see forward or reverse precession.
Time Waveform and FFT Spectrum Simulator
Build a machine signal from 1X, 2X, 3X, a subsynchronous component, bearing impacts and noise; see the waveform, spectrum, crest factor and kurtosis.
FFT Windowing and Spectral Leakage Experiment
See the amplitude error, leakage and noise bandwidth (ENBW) of Hann, Hamming, flat-top and other windows with a real FFT.
Amplitude Modulation and Sideband Simulator
See the sidebands, envelope and waveform created when a carrier is modulated by another frequency; the basis of gear and bearing diagnostics.
Beat Frequency and Wave Interference Simulator
See and hear the beat created when two vibrations of close frequency overlap; compute the beat period and the highest and lowest amplitude.
Signal Tone Generator with FFT Spectrum
Mix and listen to three sine tones; see the time waveform, FFT spectrum, crest factor and beat frequencies.
Belt & Gear Mesh Frequencies
Calculate belt pass frequency, pulley speeds, gear mesh frequency and sidebands.
Bearing Fault Frequency Calculator
Calculate BPFO, BPFI, BSF and FTF from bearing geometry and speed, and see them on a spectrum.
Shaft Alignment Tolerances
See permissible offset and angularity by speed and evaluate your measurement.
Shaft Alignment Calculator: Face-Rim and Reverse Indicator
From dial indicator readings, work out offset and angularity at the coupling and the shim and horizontal moves at the front and rear feet of the moving machine.
Vibration Unit Converter
Frequency-dependent conversion between displacement, velocity and acceleration; peak, peak-to-peak and RMS.
Engineering Unit Converter
Convert length, force, pressure, power, energy, torque, velocity, flow, frequency and temperature units in one table.
Unplanned Downtime Cost Calculator
Compare the cost of an unplanned failure with a planned intervention, using your own numbers.
These tools are intended for preliminary assessment and training. Decisions on critical equipment should be based on on-site measurement and expert evaluation.
Is your machine vibrating? Let's talk before it stops.
Tell us the equipment type, speed and the symptom you observe; we will plan the measurement and site visit together.