Every calculator shows the full working: formula, substituted values and result for each step, with PASS / FAIL checks against recognised standards such as ISO 281, ISO 14728, ISO 3408, ISO 898-1, VDI 2230 and DIN 22101. Download any result as a free PDF calculation report in LTM calc-sheet format.
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Motion, Drives and Power Transmission
Ball Screw CalculatorCritical speed, buckling, dynamic load rating, life and drive torque in one check.JIS B 1192 / ISO 3408 rating lifeLinear Guide Life CalculatorWorst-block load, static safety factor and rated life for profile rail guides.ISO 14728-1 dynamic rating lifeServo Motor Sizing CalculatorPeak torque, RMS torque, inertia ratio and speed checks over a full motion cycle.Rigid-body dynamicsBearing Life CalculatorISO 281 L10 life in hours and the dynamic load rating needed for your target.ISO 281 basic and modified rating lifePneumatic Cylinder Force CalculatorPush and pull force, load ratio, recommended bore and air consumption.ISO 15552 / ISO 6432 standard boresBelt Conveyor Power CalculatorDrive force, pulley power and motor size for horizontal and inclined belt conveyors.DIN 22101 / ISO 5048 simplified resistance methodGear Ratio CalculatorSpeed, torque, power, centre distance and tooth force for a gear pair.ISO 53 / ISO 54 standard module gearing relationships
Structures and Machine Elements
Beam Deflection CalculatorDeflection, bending moment, stress and safety factor for six standard load cases.Euler-Bernoulli beam theoryBolt Torque CalculatorTightening torque and preload for ISO metric bolts, with a VDI 2230 stress check.ISO 898-1 property classesShaft Diameter CalculatorMinimum shaft diameter for combined bending and torsion by the DE-Goodman fatigue criterion.Shigley DE-Goodman criterionBeam Bending Stress CalculatorBending, shear and von Mises stress with a yield safety factor.Euler-Bernoulli bending
Manufacturing and Costing
Material Weight CalculatorMass, kg per metre and total batch weight for plates, bars, tubes, beams and angles.Geometry from nominal dimensionsCutting Speed and Feed CalculatorSpindle speed, feed rate, metal removal rate and power for turning, milling and drilling.Standard machining relationshipsSheet Metal Bend Allowance CalculatorK-factor, bend allowance, bend deduction and flat blank length for press brake parts.DIN 6935 correction factorFabrication Cost EstimatorPrice per part and batch total from material, machine time, labour and overheads.Standard job costing method (direct cost + overhead + margin)
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