Mechanisms — Cranks & Slider-Cranks

Recent Blogs

Bell-crank with Connecting Rod diagram
Bell-crank with Connecting Rod Mechanism: How It Works, Parts, Uses & Calculator
Bell-crank with connecting rod explained — how the right-angle linkage redirects motion, sizing math, and worked examples from aerospace flight controls.
Bell-crank Lever with Slotted Disk Crank diagram
Bell-crank Lever with Slotted Disk Crank Mechanism: How It Works, Diagram, Parts and Uses
How a Bell-crank Lever with Slotted Disk Crank converts rotary motion into timed angular output for indexing, valve gear, and textile machinery applications.
Beam-driven Crank and Fly-wheel diagram
Beam-driven Crank and Fly-wheel Mechanism: How It Works, Parts, Diagram, and Uses Explained
Beam-driven crank and flywheel converts oscillating beam motion into smooth rotation. See how it works, the math, and real engine applications.
Slider-crank Linkage diagram
Slider-crank Linkage Mechanism: How It Works, Diagram, Formula, Parts, and Real-World Uses
Slider-crank Linkage explained: how it converts rotation to linear motion, real engine and pump examples, sizing math, and tolerance rules from FIRGELLI engineers.
Crank (general) diagram
Crank (general) Mechanism: How It Works, Slider-Crank Diagram, Parts and Real-World Uses
Crank mechanism explained — how rotary input converts to linear or oscillating output, with sizing math, real-world examples from bicycles to engines, and design tradeoffs.
Crank Substitute diagram
Crank Substitute Mechanism: How the Planetary Gear Slider-Crank Works, Parts & Uses
How a Crank Substitute replaces a full crank with gearing to convert rotation into reciprocation in compact machines, presses, and shaper heads.