Build Your First Tolerance Stack-Up

WC and RSS analysis, sensitivity charts, review-ready output. Pick a template or start from scratch.

Start with a Blank Stack-Up

Add your own dimensions, tolerances, and assumptions from scratch

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Or Start from a Template

Pre-built structures for common mechanical assemblies. Dimensions included—customize to your design.

🔧Hydraulics

Clevis/Actuator Gap

Calculate the gap between a clevis and actuator rod eyes. Common in hydraulic and pneumatic cylinder mounting.

⚙️Bearings

Shaft & Retainer Stack

Bearing preload/endplay stack with shaft shoulder, bearings, spacers, and retaining ring.

💧Sealing

Lid/Gasket Seal Stack

Gasket compression stack for a flanged lid assembly with bolt preload.

📐Fits

Pin/Bushing Clearance

Clearance fit analysis between a pin and bushing bore.

📋General

Thermal Expansion Stack

Stack-up including thermal expansion effects between dissimilar materials at operating temperature.

📋General

Generic Linear Chain

Blank 5-dimension linear stack template. Customize for your application.

Fasteners

Flange Bolt Circle Gap

Bolt hole to bolt shank clearance for flange assembly alignment.

📐Fits

Press Fit Interference

Interference fit analysis for shaft pressed into hub or bearing bore.

Gears

Gear Mesh Center Distance

Center distance variation for spur/helical gear mesh affecting backlash and contact.

Couplings

Shaft Coupling Alignment

Axial gap stack for flexible coupling between motor and driven shaft.

Engines

Piston Ring End Gap

Ring end gap in cylinder bore accounting for thermal expansion at operating temperature.

Linear Motion

Ball Screw Axial Stack

Bearing preload and axial play stack for precision ball screw assembly.

Check out our guides to understand WC vs RSS analysis, sensitivity, and how to build review-ready reports.