Purpose-Built Tolerance analysis software for mechanical Engineers
The RD8 Tolerance Stack-Up and Optimization Software helps mechanical engineering teams bring tolerance analysis into daily development workflows to handle variation.
Purpose‑built for mechanical designers to handle simple and complex assemblies. RD8 delivers predictable, traceable, and repeatable calculations without the limits of spreadsheets or ad‑hoc processes.
Dimensional management by tolerance analysis, simulation of variation and optimization of CAD geometry is the key for functional performance and product quality.
Are you ready to work smarter and
leaner with tolerance analysis?
Takes 3 min - Completely Free - Immediate Recommendations for Improvements
YOU ARE RIGHT...
…50% OF THE TIME.
Often tolerance stack-up calculations are not in sync with real life experience - this due to overcomplicated designs and incorrect tolerance analysis.
The root cause is overconstraints in the design that results in unambiguous designs.
RD8 Software offers unique features to help ensure that your products are unambiguous and that your calculations are correct.
The result is a faster product development process; fewer tests, fewer iterations, fewer engineering troubleshooting/reworking hours.
FROM COMPLEX 3D PROBLEMS TO SIMPLE STACKS
RD8 has a unique metric to measure the quality of the design – of the actual CAD geometry – based on all mechanical interfaces between parts in an assembly.
Mastering the capabilities of RD8 constraint optimization boosts product performance and quality.
MANAGE HUNDRES OF CALCULATIONS, PARAMETERS, THEIR RELATIONS, THEIR PART INTERFACES, IN AN INTUITIVE AND USER-FRIENDLY WAY
RD8 is built by engineers for engineers with an intuitive user interface that makes tolerance analysis lean.
Purpose-built to be activated from day 1 in a project. So that designs can be based by supporting calculations while designing rather than a check after.
Trusted by engineering teams building high‑performance mechanical products
Tolerance analysis Software for Faster, Better Mechanical Designs
The RD8 Tolerance Analysis Software is designed by engineers for engineers.
More than 250 years of accumulated expert experience of the RD8 Team has been distilled down to unique software.
95% of profit is based on the 'Design Quality' - not manufacturing.
RD8's peak competence is to built-in quality by design from the start of the mechanical development to SOP.
Insights from RD8 software application based on intel from +800 optimized mechanical designs:
+50% of Tolerance
Stacks are of Poor Quality
We see approximately 5 overconstraints per mechanical interface causing poor quality of impacted tolerance stacks. These designs can be dramatically improved by use of RD8.
Furthermore RD8 can be used very early in the design process - yielding design confidence from day 1 where other systems rely on a complete CAD model.
+50% Reduction
of Critical Tolerances
In more than 50% of cases we see a potential +50% reduction of GD&T modifiers, number dimensions, and relaxation of tight tolerances.
No other tools are able to spot overconstraints and highlight them based on the actual CAD geometry instead of manual constraints.
6X Faster
than Complex Tools
We see customers do analysis in 30 min, which normally takes 180 minutes in complex software applications.
We see a 3-10X increase in speed compared to Excel depending on stack-complexity. In some cases a +100X increase if you include lost work in Excel.
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Replace Excel-Based Tolerance Analysis with a Scalable Tolerance Analysis Tools
While Excel is often used for tolerance analysis, it introduces risk, inefficiency, and scaling issues as products and assemblies grow more complex.
While spreadsheets are very flexible - they can also be the root cause misaligned work.
Advantages of using a dedicated tolerance analysis tool:
Skip tedious worfklows in-and-out of apps. Screenshot in CAD, illustration in Power Point, stack-up calculations in Excel. Where is the mother illustration? Where is the matching assembly file? Which is the latest?
Tired of spreadsheets that break, freeze/white screen, become inconsistent, are hard to update, cannot support multi-user access when macros are present, broken links, broken references, malfunction when calculations cells are deleted, sheet is broken if a line is inserted... the list goes on...
Tired of Excels limitations? Not possible to do assymetric tolerences, Monte Carlo Simulations run slow, not able to run sensitivity studies, cannot see who did the last edit, ...
Explore core capabilities of RD8 Tolerance Analysis Software
RD8 tolerance analysis software provides automatic stack-up detection and analysis, parameter sync and easy collaboration to help mechanical engineers create better mechanical designs in shorter time.
Easy to Use - Everyday
Keep the Overview
Smart Assisted Workflows
Multi-user Collaboration and Version Control
Smart Quality Checks
From 3D Problems to Simplified 2D Stacks
Remove the Most Expensive GD&T/GPS Modifiers
Designed for engineers working on Must-not-fail products
Robust engineering software tailored for design teams with a focus on ‘must-not-fail product’ in high volume production in competitive sectors.
Based on Robust Design philosophy - to achieve Quality by Design (and not only relying on Quality by Production). Making clever choises up-front impacts 95% of the cost of the product.
Tolerance Analysis Software for different engineering environments
RD8 is designed to cater and adapt to different engineering environments, product complexities, and organizational maturity levels.
Tolerance Analysis for Industrial- and Consumer Products
Suited for companies with high volume, quality demands and a constant focus on cost and new innovation.
Tolerance Analysis for Automotive
Coordination between many stakeholders. OEMs, Tier 1, Tier 2, Tier 3.
Competion is fearce.
High requirements to be most competivite in three dimensions: quality, delivery and cost.
Tolerance Analysis for Life Science: Drug Delivery Devices/Autoinjectors and Medical Devices
Where failure is not an option.
Quality is key.
Documentation and design history is mandatory.
Failures are not an option.
Why engineers move from Excel to RD8 Tolerance Analysis software
Enginners choose RD8 due to simplicity and yet it's very advanced functions.
It is the natural step from Excel - bringing all the flexibiilty from Excel: quick edits and tabular form, thus storing, managing and maintaining it in secure, professional and limitless environment.
What can engineering teams achieve with RD8 Tolerance Analysis Software?
Fewer Quality Issues
Improved yield of production, less NC's, less recalls, less warrenty cases.
Faster Developement Cycles
Increased confidrence in desigs. Fewer design loops.
Rock Solid Documention
Captured design desicions and engineering rationales
Team Spirit
Free teams for uncesseary hassle and let them focus their energy on product improcing activities instead of an "updating-nighmare".
Part Cost Reductions
Reduction of part cost by easing technical requirements to the parts (by design)
Total Cost Reduction
Reduction of down stream effects: warrenty costs, assembly cost, supplier selections, QA, reputation cost...
How does RD8 compare to other Tolerance Analysis Software solutions?
RD8 is designed for the many—not the few. Where traditional tolerance analysis tools often require deep specialization, long training cycles, or highly manual workflows, RD8 focuses on making rigorous analysis accessible to every engineer from day 1 of the project. The result is a tool that stays technically precise while remaining fast, intuitive, and usable in everyday development work.
Below is a high‑level view of what sets RD8 apart.
Made to be used from Day 1 of a Project
Automatic Set-up of Stacks
Tolerance Stack Optimization
3D Stack Simplification Features
Quality Check of Ambigious Stacks
Unique Calculation and Product Overview
Interlinked Calculations and Relations
Built for Collaboration
Design Notes and Design Reviews
Built for Speed
Tolerance Analysis Software Supported By Engineering consultancy
RD8 Software is built on the practical experience of engineers who have spent years perfecting tolerance analysis in real projects, ensuring the software reflects how experts actually work.
During onboarding, the same consultants guide your team through models, workflows, and best practices, so you gain a solid and confident foundation from day one. This close link between expert consultancy and software gives users both a proven tool and the guidance needed to apply it effectively.
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
Make tolerance analysis a part of the product development process
1. Overview
Keep an overview of all calculations in a project.
Our ‘what if’ feature help to predict the effect of changes.
2. Collaborate
Share, sync, update seamlessly.
Cloud based, auto-save, no check-in/check-out, multi-user access.
3. 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.
HOW TO CHOOSE THE RIGHT TOLERANCE ANALYSIS SOFTWARE
To choose the right Tolerance Analysis Software for your team, follow the steps below.
HOW TO CHOOSE THE RIGHT TOLERANCE ANALYSIS SOFTWARE
To choose the right Tolerance Analysis Software for your team, follow the steps shown here.
1. Evaluate Your Own Readiness
2. Plan the Use Case
3. Engineering Adoption and Support
4. Long-Term Scalability
Complete all-in-one Tolerance Analysis software
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