Tolerance Stackup Calculator

TolStack Pro

Mechanical Tolerance Stack-Up Calculator

Worst Case RSS MRSS  CONNECTING API...

Project Information

Project / Part Number

Stack-Up Description

Engineer Name

Unit System Millimetre (mm) Inch (in)

Date

Analysis Method

Sigma Level (Zσ) 3 99.73% confidence

Tolerance Chain Definition

DIRECTION: + ADDS TO GAP  |  − CLOSES GAP  |  SENSITIVITY = 1 FOR LINEAR CHAINS

#	Component / Feature	Direction	Nominal (N)	Tol (+) ⓘ	Tol (−) ⓘ	Sensitivity	Note / Ref	Del

// Enter Target Values if any. Else Keep Blank

Nominal Gap Target

Min Allowable Gap

Max Allowable Gap

Analysis Results

Nominal Gap

—

enter data & calculate

WC Tolerance

—

Worst Case ±

RSS Tolerance

—

Root Sum Square ±

MRSS Tolerance

—

Modified RSS ±

+ve Delta from Target

—

Nominal Gap + Tolerance

−ve Delta from Target

—

Nominal Gap − Tolerance

Maximum Gap

—

—

Minimum Gap

—

—

Stack-Up Status — WC Method Active

—

Tolerance Method Comparison

WORST CASE

RSS

MRSS

Visual Tolerance Chain — Horizontal Loop Diagram

■ +ve direction (adds to gap)   ■ −ve direction (closes gap)   ■ Resultant gap   ▓ Tolerance band

TOLSTACK PRO  ·  MECHANICAL TOLERANCE ANALYSIS  ·  WC · RSS · MRSS  ·  ASME Y14.5 / ISO 286