12 calculators

Machine Design Calculators

Shaft design, bearings, springs, fasteners, gears, welds, and fatigue analysis

Design solid and hollow shafts under combined bending and torsion using ASME distortion energy criteria

Calculate L10 bearing life in revolutions and hours for ball and roller bearings using basic dynamic load rating

Calculate belt length, speed ratio, belt tensions, and required belt width for V-belt and flat-belt drives

Calculate spring rate, deflection, and shear stress with Wahl correction factor for helical compression springs

Calculate bolt preload, torque requirements, and joint clamping force using the torque-tension relationship T = KFd

Calculate allowable load and factor of safety for fillet and butt welds under shear, tension, and bending loads

Calculate shear and compressive stress in shaft keys and look up standard ANSI key sizes by shaft diameter

Calculate kinetic energy stored, energy fluctuation, and required moment of inertia for flywheel design

Calculate interface pressure, hub hoop stress, and assembly force for press-fit shaft-hub connections using Lame's equations

Calculate factor of safety using Goodman, Soderberg, and Gerber criteria with modified endurance limit correction factors

Calculate gear ratios, output RPM, and torque for single or multi-stage gear trains

Calculate static factor of safety and fatigue life using Goodman and Soderberg criteria