Make Tolerance Stack-Up Analysis and Optimization a Part of Product Design
The RD8 Tolerance Stack-Up and Optimization Software helps mechanical engineering teams bring tolerance analysis into daily development workflows.
Purpose‑built for complex assemblies, RD8 delivers predictable, traceable, and repeatable calculations without the limits of spreadsheets or ad‑hoc processes.
Trusted by engineering teams building high‑performance mechanical products
Keeping Tolerance Stack-Up Work Alive Sounds Good in Theory - but in Practice, it often Falls Apart
Your team wants a proper tolerance stack-up process, but it’s difficult to maintain and nearly impossible to scale.
Too Late.
Your team wants a proper tolerance stack-up process, but it’s difficult to maintain and nearly impossible to scale.
A Dedicated Tolerance Stack-Up Tool for Teams where Tolerances Matter
The RD8 Tolerance Stack-up Software provides a structured, simulation‑driven approach to tolerance stack-ups - built for teams working on complex mechanical systems. Replace scattered documents with a predictable, repeatable workflow that supports better decisions and robust product performance.
Tolerance analysis in less than 20 minutes...
1. Import
Easily upload your CAD model(s) to RD8 (.STEP files).
The iteration feature keeps the project up to date with the latest CAD model. (Can also be used up-front without a CAD model.)
2. Setup
Identify and setup the tolerance stack with our easy-to-use features.
Worlds first path finder.
1D, 2D, 3D, non-linear stacks.
Built-in3D viewer and infinity canvas.
3. Analyze
Detail and document the tolerance stack with ease. Forecast and analyze results.
Worst Case, RSS, Statistical and Monte Carlo simulations in seconds
Keeping it all together...
the aftermath…
made easy…
A. Overview
Keep an overview of all calculations in a project.
Our ‘what if’ feature help to predict the effect of changes.
B. Collaborate
Share, sync, update seamlessly.
Cloud based, auto-save, no check-in/check-out, multi-user access.
C. Optimize
Improve predictability through redesign of constraints and geometry of interfaces.
The RD8 proprietary – world leading – mechanical interface engine will “X-ray” the design and reveal optimization points.
Want a Demo?
We'll contact you.
By submitting, you accept RD8's Privacy Policy and Terms of Service.
Two ways to unlock value with RD8 Software
RD8 supports both traditional expert-driven workflows and modern, scalable team workflows. Choose the approach that fits your organization today - and evolve as your engineering process matures.
Centralized Expert Workflow
For the 1-3 specialists who handle tolerance stacks today.
Scaled Team Workflow
For organizations ready to democratize tolerance stack analysis.
Complete all-in-one Tolerance Analysis software
All features
Ready to bring structure and predictability to your tolerance work?
By submitting, you accept RD8's Privacy Policy and Terms of Service.