Recent Blogs
Oldham Coupling: Hiscox Items 1287–1288
Explore how an Oldham coupling bridges parallel shaft offset. Calculate ideal tongue travel, maximum sliding speed and the intermediate disc centre orbit.
Bellows Coupling Mechanism Explained: How It Works, Diagram, Parts, Formula and CNC Servo Uses
Bellows couplings transmit torque between misaligned shafts in CNC and servo systems. Learn how they work, sizing math, failure modes, and selection tradeoffs.
Grooved Friction Gearing: V-Groove Force Calculator | FIRGELLI
Resolve normal force on each flank of a symmetric V-groove from radial load and half-angle. Includes a worked example and clear limits on traction and...
Single Cardan Joint: Ideal Instantaneous Speed-ratio Calculator
Explore a rigid-cross universal joint and calculate ideal speed ratio through a revolution. Shaft angle sets the extrema; torque capacity and vibration response are not...
Flexible Angular Coupling: Misalignment Comparison | FIRGELLI
Compare a measured shaft angle with the applicable manufacturer limit. Calculate angle ratio, signed margin, excess angle and radians without predicting fatigue life.
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.
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.
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.
Grid Coupling: Spring-Grid Animation and Torque Calculator
See a serpentine steel grid connect two slotted hubs. Calculate running torque, a service-factor comparison and equivalent tangential force from power and speed.
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...
Flexible Link Coupling: Ideal Link Force and Stress | FIRGELLI
Explore link-force arithmetic for equal tangential load sharing. Compare torque, pin-circle size and net area without treating the result as a coupling rating.
Ball Socket Universal Joints Mechanism Explained: How It Works, Parts, Diagram and Uses
Explore a perpendicular groove-and-strap ball-socket shaft joint. Compare cyclic ideal speed and torque ratios as shaft angle changes, with power conserved.
Universal Joint (spatial) Mechanism Explained: How It Works, Parts, Cardan Formula & Uses
Explore a single Cardan universal joint. Calculate instantaneous, minimum and maximum output speeds from shaft angle and input speed, with an exact worked example.