Recent Blogs
Travelling Crane: Plan-view Geometry Calculator
Compare bridge span and an illustrative endpoint offset. Calculate geometric skew angle, offset/span ratio, a selected length quotient and diagonal excess.
Vibrating Lift: Spiral Elevator Animation and Reference Calculator
Explore a vibratory spiral elevator and convert entered throughput, lift height and frequency into mass flow, gravity-only lift power and cycles per minute.
Roller Tube Expander Mechanism: How It Works, Parts, Wall Reduction Formula and Uses
Roller Tube Expander explained — how the mandrel and rolls cold-work boiler tubes into tube sheets, with torque math, real specs, and shop examples.
Expansion Bit: Cutter Diameter and Screw-Feed Calculator | FIRGELLI
Set an expansion-bit cutter radius and compare bore diameter, circumference and ideal lead-screw advance. Cutter position and screw feed are independent.
Compound Lever Shears Mechanism Explained: How It Works, Parts, Formula, and Uses
Explore connected compound bench shears. Compare two lever ratios and pull force, with ideal blade force and stock-thickness comparisons.
Boiler Tube Expander Mechanism Explained: How It Works, Parts, Diagram & Wall Reduction Formula
See how a mandrel and rollers expand a boiler tube into its tubesheet. Compare target rolled diameter and wall thickness from measured dimensions and a...
Wire-Bending Machine: Angle Animation and Illustrative Overbend Calculator
Compare target and adjusted bend angles using a simple overbend heuristic and radius-to-diameter index. Material response and production settings require validation.
Taper Tube Rolls: Entered Tube-geometry Calculator
Compare entered tube end diameters, wall thicknesses and length. Calculate signed OD slope, percentage changes and exit D/t without predicting a rolling pass.
Spring Friction Clutch Mechanism: How It Works, Parts, Formula and Factory Uses Explained
Spring Friction Clutch explained — how it works, torque formula, worked example, and real factory uses in textile, packaging, and machine-tool drives.
Shaft Step Adjustment Mechanism Explained: How Stepped Cone Pulleys Change Shaft Speed
Shaft Step Adjustment explained — how mill operators tune stepped-pulley and stepped-cone drives to hit target spindle speeds without slipping belts or grinding gears.
Toothed-Sector Press: Ideal Gear Transmission Ledger
How a Press via Toothed Sector and Pinion multiplies force in baling, briquetting, and forging shops — geometry, sizing math, and real worked examples.
Right Angle Shaft Transmission Mechanism: How It Works, Bevel Gear Parts, Uses & Calculator
Calculate speed, torque and power for a right-angle bevel pair from tooth counts and input conditions. Explore reduction, speed increase and assumed efficiency.
Jointed Radial Arm: Two-Link Reach and Workspace Calculator | FIRGELLI
Calculate two-link radial reach, minimum and maximum radius, and ideal annular workspace. The stated elbow-angle convention runs from folded at 0° to straight at 180°.
I-Bar Tramway: Ideal Incline-Force Calculator | FIRGELLI
Compare rolling resistance and the gravity grade term for constant-speed travel on a straight incline. Structural capacity, trolley ratings and brake sizing are not calculated.
Gordon Printing Press: Motion and Cycle-Rate Calculator | FIRGELLI
Explore a Gordon press toggle and rocking platen. Calculate cycle time, assumed sheet rate and average ink-disc rotation from entered production settings.
Friction Clutch in a Bevel Drive: Torque Comparison | FIRGELLI
Explore a friction-coupled bevel drive and compare ideal flat-interface torque with demand, including a fixed 1.4× preload scenario.
Cloth Dresser: Teasel-Drum Motion and Nominal Cloth Throughput Explained
See a historical teasel drum and its cloth guides. Calculate nominal line speed and area throughput from row-event density; finishing quality requires additional textile data.
Adjustable Floor Stand Mechanism Explained: Telescoping Pillar Parts, Buckling Formula, and Diagram
See how a telescoping floor stand supports workpieces and compare two ideal tube-column Euler calculations. Learn what the model excludes from a complete stand rating.
Ball-bearing Problem: Contact Forces, Diagram and Calculator
Explore bearing contact forces with an interactive rolling diagram. Adjust radial load, axial load and contact angle to calculate opposed reactions.
Yale-weston Differential Gear Hoist Mechanism Explained: How It Works, Diagram, Formula, and Uses
Explore the differential chain-hoist principle. Compare ideal lift per turn, radius difference and hand pull using an assumed efficiency.
Yale Duplex Hoist Mechanism Explained: Weston Brake, Duplex Pawls, Mechanical Advantage
Explore an ideal hand-chain-hoist model. Compare mechanical advantage, assumed hand pull and chain-fall load; results do not establish a lifting rating.
Wood-bending Clamp and Formers: Ideal Bend-strain Calculator
Compare board thickness and inside bend radius using ideal circular geometry. The displayed time and strain thresholds are illustrative assumptions, not material limits.
Wood Compression Carving: Ideal Press-force Calculator
Calculate ideal force from rectangular die dimensions and an assumed uniform pressure. Compare short-ton force with an entered press rating.
Wire-Drawing Machine: Animation and Equal-Pass Reduction Calculator
Distribute circular wire-area reduction across equal-ratio drawing passes. Compare an entered linear stress reference without treating it as process qualification.
Wire-Covering Machine: Serving Animation, Lay and Coverage Calculator
Calculate ideal helical lay, yarn angle and geometric coverage from wire and spindle speeds. Explore target coverage while keeping yarn deformation limits explicit.