Recent Blogs
Three-pulley Two-speed Drive: Ideal Speed and Torque Ratios
Compare two stepped-pulley speed ratios and reciprocal lossless torque ratios. The schematic idler redirects the belt; belt fit, tension and shifting are not calculated.
Expanding Pulley: V-Groove Geometry Calculator | FIRGELLI
Explore opposed conical sheaves and calculate pitch-diameter change from axial closure and groove angle. This model covers one pulley rather than a full drive.
Belt with Movable Tightening Pulley: How It Works, Parts, Formula, and Uses Explained
Explore a movable backside idler and compare ball-bearing basic rating life at two equivalent loads, with the same bearing and speed. Spring sizing is not...
Adjustable Universal Sheave Mechanism Explained: How It Works, Parts, Diagram, and Uses
Explore a variable-pitch V-belt sheave and calculate ideal driven speed from pitch diameter and adjustment turns. Understand the separate groove-centerline assumption.