TEA Tools

L45 Vertriebs GmbH

About this app

For design and development engineers in industry: twelve tools for everyday design work on drives, bearings and gearing — plus a glossary of 52 technical terms. All offline, no account, no advertising, no data collection.

THE TOOLS

• Torque — torque, power or speed from the other two
• Gearbox ratio — output speed, torque and power including efficiency
• Efficiency — overall efficiency across up to four stages, loss power, self-locking limit
• Moment of inertia — seven geometries, inertia reflected to the motor shaft, inertia ratio with a traffic-light rating
• Bearing life L10 to ISO 281 — in revolutions, hours and years
• Ball screw — drive torque, Euler buckling load and critical speed with a safety check
• Linear guide — static safety factor, permissible load or required load rating
• Screw jack sizing — lifting speed, input torque or axial force
• Rack and pinion — reference diameter, feed force, pinion torque and drive power
• Gear geometry — reference, tip, root and base circle, centre distance, ratio
• Select gear type — a short step-by-step guide from shaft arrangement to recommendation
• Magnetic coupling — torque to be transmitted, slip heat and the minimum containment shell wall thickness

THE GLOSSARY

52 terms from drive technology, gearboxes, linear motion technology, lubrication and standards — with search, category filter and detailed explanations. The search also finds German terms typed without umlauts: “Ubersetzung” leads to “Übersetzung”.

BUILT FOR THE SHOP FLOOR

The app requests no Android permission that would let it access your device or your data — in particular no internet access. It works entirely without a network, in the basement as well as on the factory floor. There is no account, no sign-in, no advertising and no data collection. The app transmits nothing on its own. Only when you confirm beneath a result that you want to request a quote, switch to the shop or pass your calculation on to yourself does the app hand the calculator name, your inputs and the result to your browser or to an app of your choice — a confirmation sheet shows you every line beforehand. Links to the website open your browser without any calculated values.

German decimal commas are understood: 7,5 is as valid as 7.5. Every result field shows the precision that suits its order of magnitude — from fractions of a newton metre to millions of revolutions.

German and English, light and dark theme.

TECHNICAL BASIS

The formulae, standards references and guide values originate from the tools at technische-antriebselemente.de. The app's calculators are secured by verified test vectors derived from those same tools. Individual guide values and display rules may differ between app and website; your manufacturer's data and the respective standard are what count.

A design aid, not a binding design: the calculators implement simplified, generally accepted models and know neither your application nor its operating conditions. Every result must be checked by qualified personnel before use. Where figures differ, your manufacturer's data and the respective standard apply.

PUBLISHER

Published by L45 Vertriebs GmbH, Hamburg, Germany. “TEA” is the trade mark of Technische Antriebselemente GmbH, Hamburg; the two are sister companies, and the mark is used with the proprietor’s consent. The legal notice and privacy policy are in the app under “More”.

What’s new

What's new in 1.0.5:
• Component sketches with formula symbols in the technical calculators – the field you are typing in lights up in the sketch.
• While you type, a small sketch sits right above the field; tap it to minimise.
• Ball screw and linear guide calculations revised (including critical speed and static safety factor S₀).
• Smoother screen transitions and minor fixes.