Vibration analysis
Bearing Fault Frequency Calculator
Calculate BPFO, BPFI, BSF and FTF from bearing geometry, from the manufacturer's frequency factors, or from the rolling element count alone.
FFT Resolution Calculator
Work out bin spacing, real peak separation, block time and total acquisition time from Fmax, lines of resolution, window function, averages and overlap.
Forcing Frequency Calculator
Gear mesh and hunting tooth, belt frequency, induction motor slip and pole pass, and blade pass. The frequencies a machine produces because of how it is built.
ISO 20816 Vibration Severity Calculator
Place a broadband RMS velocity reading in the ISO 20816-3 evaluation zones by machine group and support class, and test it against the change criterion.
Vibration Unit Converter
Convert vibration between acceleration, velocity and displacement at a single frequency, in g, m/s², mm/s, in/s, µm and mil, RMS, peak or peak to peak.
Balancing
ISO 21940 Balance Quality Grade Calculator
Work out the permissible residual unbalance for an ISO 21940-11 balance quality grade, in gram millimetres and as the correction mass at your own radius.
Single Plane Balancing Calculator
Solve a single plane trial weight balance as vectors: correction mass and angle from an original run and a trial run, with the answer for leaving the trial mass on.
Two Plane Balancing Calculator
Solve a two plane balance from three runs: four complex influence coefficients, and the correction mass and angle for each plane, by Cramer's rule.
Shaft alignment
Shaft Alignment Tolerance Calculator
Check coupling offset and angularity against the speed-based tolerance the trade uses, and get the vertical and horizontal move each foot needs to come into line.
Thermal Growth Calculator for Shaft Alignment
How far each machine's shaft centreline rises as it warms, and the cold vertical offset that difference is worth when the two machines grow by different amounts.
Infrared thermography
Emissivity Error Calculator
The true surface temperature behind a thermal reading taken at the wrong emissivity, with reflected temperature and the sensitivity to a 0.05 error.
Thermal Camera Spot Size Calculator
Find the spot size a thermal camera measures at a given distance from its IFOV or its field of view, and the smallest target it can read honestly.
Thermography Delta T Calculator
Work out ΔT against an identical component, the point's own history or ambient air, project it to rated load as a range, and place it against your criterion.
Oil analysis
ISO 4406 Cleanliness Code Calculator
Convert particle counts at 4, 6 and 14 micrometres into an ISO 4406 cleanliness code, see the range behind every digit, and compare the oil against a target.
Regrease Quantity and Interval Calculator
Work out the grease quantity from a bearing's outside diameter and width, then adjust the maker's relubrication interval for heat, orientation and dirt.
Viscosity Temperature Calculator
Work out kinematic viscosity at any operating temperature from the 40 and 100 degree figures on an oil data sheet, using the Walther equation behind ASTM D341.
Ultrasound
Compressed Air Leak Cost Calculator
Work out how much free air a compressed air leak loses and what that air is worth over a year, from the hole diameter, the line pressure and your own specific power.
Steam Trap Loss Calculator
Estimate the steam a failed trap passes from its orifice diameter and line pressure using Napier's equation, then turn that flow into tonnes and cost per year.
Ultrasonic dB and Wavelength Calculator
Turn a decibel rise over baseline into an amplitude ratio with the trade's bearing thresholds, and find the wavelength of ultrasound in air.
Reliability and maintenance
FMEA RPN Calculator
Multiply severity, occurrence and detection to get the FMEA risk priority number, with severity times occurrence read beside it.
ISO 281 Bearing Life Calculator
Calculate ISO 281 basic rating life from the dynamic load rating, the equivalent dynamic load and the speed, in millions of revolutions and in running hours.
MTBF, MTTR and Availability Calculator
Calculate MTBF, MTTR, availability and failure rate from operating hours and a failure count, plus the odds of completing a mission.
OEE Calculator
Work out availability, performance, quality and overall equipment effectiveness from a shift's planned time, downtime and piece counts.
P-F Interval Calculator
Turn a P-F interval and a response time into the usable window and the longest inspection interval that still catches the fault in time.