SuperNX analyzes NX .prt models, classifies functional interfaces and checks key characteristics, with traceable reports and quality-gated PMI output.
SuperNX is a tolerance-chain analysis service for mechanical engineers working with Siemens NX .prt models. It extracts model geometry and PMI, identifies parts and functional interfaces, assigns tolerances, and checks key characteristics against their requirements. The public Standards tool provides a free fit and general-tolerance reference.
The analysis workflow measures geometry, classifies connections, assigns tolerances, verifies key characteristics, prepares a report, generates a Word report, and checks the output. Interface interpretation matters: a rotating pin joint and a pin sliding in a slot can require different error models. Reported assumptions should be reviewed alongside the measured geometry.
Deliverables can include a Word report, key-characteristic verdict cards, part views and structured analysis data. When every key characteristic passes, the workflow can create a separate part copy with semantic PMI dimensions and geometric controls. A failing characteristic gates write-back. The source part is not overwritten.
Standards and learning articles are public. To analyze your own part, sign in to the workspace and use an eligible plan or trial with credits. Fast and Deep are analysis levels. Report language and tolerance-standard preferences are selected in Settings. Current plan and credit terms are shown on the product home and in the workspace.
A tolerance result depends on the identified mechanism, datum choices, specified limits, fits and process assumptions. Generated reports support engineering review; they are not a measurement of actual production capability or a certification that a manufactured assembly will work. Review any low-confidence interpretation and confirm manufacturing assumptions before releasing a design.
Short narrated walkthroughs of stack-ups, ISO 286 fits and ISO 2768. Each one comes with a written guide and the full transcript. (Videos are in English)
How to do tolerance stack up analysis, step by step, with a real example: a lid gap that must stay between 0.10 and 0.80 mm. Define the requirement, draw the loop, assign signs, sum the nominals, calculate worst case and RSS, rank the contributors, and fix the biggest one.
6:03 · Written guide and full transcript · YouTube
A four-part tolerance stack passes with RSS and fails worst case. We work both methods on the same simple assembly (ISO 2768-m general tolerances), explain the 99.73% assumption behind RSS (root sum square), show when it misleads, and finish with a clear rule for choosing between them.
5:20 · Written guide and full transcript · YouTube
What does Ø25 H7/g6 mean on a drawing? This explainer decodes the ISO 286 letters and numbers (hole basis, fundamental deviation, IT grade), works out the H7/g6 tolerance and clearance step by step at Ø25 and Ø40, and compares it with h6, f7, k6 and p6.
6:17 · Written guide and full transcript · YouTube
How tight should a press fit be? We read press fit tolerance straight from ISO 286: H7/p6 and H7/s6 on a 25 mm shaft, worked step by step into real interference numbers in microns, then compared with k6 and r6 on one tolerance-zone diagram.
5:50 · Written guide and full transcript · YouTube
What does "ISO 2768-mK" in a title block actually allow? We decode the m and K classes, read the ISO 2768 tolerance chart on a real bracket (linear, radii, chamfers, angles), look at K-class flatness and straightness, compare f, m and c, and explain when to write an explicit tolerance instead.
6:11 · Written guide and full transcript · YouTube
One real run on the free demo part: interfaces, key characteristics with contribution chains, and the Word report. Public, no account.