Recent Blogs
Clutch (form) Mechanism Explained: How Dog and Jaw Clutches Transmit Torque
How a form-locking clutch (dog clutch) engages with positive teeth to transmit torque without slip — used in gearboxes, PTOs, and lathe carriages.
Thompson Coupling: Ideal Constant-velocity Comparison
Compare ideal 1:1 Thompson coupling motion with the maximum and minimum speed ratios of a single Hooke joint. Real product accuracy and operating limits are...
Magnetic Coupling: Containment Shell and Power–Torque Calculator
Explore a radial magnetic coupling with a stationary containment shell. Convert entered mechanical power and rotational speed into torque for an ideal synchronous state.
Hirth Joint: Facing Serrations and Ideal Force Calculator | FIRGELLI
Explore Hirth face serrations and an ideal wedge-force comparison using torque, radius, model angle and clamp force. The calculator does not rate a joint or...
Curvic Coupling Mechanism: How Self-Centering Face Teeth Work, Parts, Formula and Uses
Explore curved annular coupling teeth, ideal two-flank preload forces and local flank movement. Learn why summed force magnitudes are not a net centering force.
Rotary Motion Transmission: Ideal External Spur-gear Pair
Calculate ideal speed, torque and direction ratios for one compatible external spur-gear pair. Tooth geometry, efficiency and load capacity are not evaluated.
Belt Drive Power Transmission: Speed Ratio, Torque and Power
Compare two pulleys using effective diameters, driver speed and torque. Apply an entered efficiency to power while retaining the ideal no-slip speed ratio.
Combination of Friction Gear Mechanism: How It Works, Diagram, Parts, Formula, and Uses Explained
Compare three friction-wheel diameters and their ideal speed ratios. See why the idler changes its own speed and shaft spacing while the final ratio stays...
Almond Angular Shaft Coupling Mechanism: How It Works, Parts, Formula, and Uses Explained
Explore Thomas R. Almond’s crank-and-sleeve shaft coupling, then compare a separate single-Cardan velocity equation using angle, speed and phase.
Shaft Coupling: Flexible Connection, Animation and Alignment Calculator
See how a flexible shaft coupling joins rotating shafts. Compare parallel and angular alignment measurements with selected reference values.
Angular Shaft Coupling Mechanism: How It Works, Cardan Joint Diagram, Parts, Formula and Uses
Explore a single Cardan joint in motion. Calculate phase-dependent speed ratio and peak variation, and distinguish kinematics from load and operating ratings.
Friction Disc and Roller: Speed and Disc Torque | FIRGELLI
Calculate ideal roller speed and disc-side torque from contact radius, roller radius, normal force and friction, with separate input/output torque meanings.
Continuous Shaft Motion Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses
Explore a rigidly coupled shaft drive. Calculate angular speed, input power and useful load torque and power using an entered overall transmission efficiency.
Continuous Rotary Motion Mechanism: How It Works, Diagram, Formula, and Belt-Drive Calculator
Explore an open belt drive. Calculate output RPM, effective diameter ratio, ideal torque multiplication and speed reduction or increase from two pulley sizes.
Brush Wheels (friction) Mechanism Explained: How It Works, Parts, Formula, Diagram & Uses
Explore bristle contact in an illustrative brush-wheel belt drive. Compare assumed friction-force and torque capacity, wheel power and slip loss.
Spline (mechanical) Explained: How It Works, Diagram, Parts, Formula and Real-World Uses
Spline shafts transmit torque while allowing axial slide. Learn the geometry, formulas, and real applications in automotive, aerospace, and CNC machinery.
Rigid Coupling Mechanism Explained: How It Works, Parts, Diagram, Formula & Calculator
Rigid couplings join two shafts in perfect alignment to transmit torque without backlash. See sleeve, flange, and clamp types, sizing math, and real industrial uses.
Jaw Coupling: Aligned Illustration and Torque Comparison Calculator | FIRGELLI
Compare entered load and rated torque and view an aligned jaw-and-spider section. Angle and offset use stated reference denominators, not universal allowable limits.
Gear Coupling: Crowned Hubs and Angle Comparison | FIRGELLI
Learn how crowned hubs accommodate limited misalignment. Compare entered angles with selected thresholds and convert crown drop from inches to thousandths.
Disc Coupling Mechanism Explained: How It Works, Diagram, Parts, Formula & Uses
Explore how a flexible disc pack connects two shafts. Compare measured angular misalignment with a manufacturer-specified limit in an interactive illustration.
Diaphragm Coupling Mechanism: How It Works, Parts, Diagram, and Formula Explained
See a continuous diaphragm connect inner and outer rotating attachments. Compare bore and rim thicknesses and view an enlarged shaft-angle detail.
Beam Coupling Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses
Beam couplings transmit torque between misaligned shafts using helical cuts in a single piece of metal. How they work, sizing, and use in CNC and...
V-grooved Face Clutch: Entered-load Torque Comparison
Explore mating radial face teeth and compare torque from entered net tangential loads and pitch radius. Tooth capacity, clamp force and engagement are not calculated.
Multiple-Plate Friction Clutch: Active Interfaces and Ideal Torque
Explore a multi-plate friction clutch stack and calculate ideal uniform-wear torque from double-sided disc count, clamp force, friction coefficient and radii.
Friction Clutch: Torque Capacity and Mean Radius | FIRGELLI
Calculate ideal plate-clutch torque from clamp force, coefficient, effective radius and active faces, then compare an entered load torque.