Bending Moment
Mechanical
Bending Moment is a core engineering term. Definition, usage notes, and a practical example.
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Gear Ratio Calculator
Enter tooth counts and input speed to estimate ratio, output speed, and torque (incl. efficiency).
Gear Ratio Calculator
Enter tooth counts and input speed; the tool calculates ratio, output speed, and torque (incl. efficiency).
Ratio i = z2 / z13.000
Output speed n2 [rpm]500.0
Output torque T2 [Nm]145.5
Efficiency η0.970
Note: Output torque includes efficiency factor η.
Projects & Export
Save this calculation to a local project or export inputs/outputs.
Exports inputs and outputs only.
Share & Report
Create a shareable link or open a print-ready report.
Formula
i = z2 / z1 | n2 = n1 / i | T2 = T1 * i * η
Assumptions
- Ideal gear ratio; backlash and elasticity are neglected.
- Efficiency ? is represented by a single factor.
References
- AGMA 2001 (Fundamental gear design)
- ISO 6336 (Cylindrical gears)
Standard Documentation
Gear RatioScope: What does this tool calculate?
Gear Ratio performs the core engineering calculation for this tool type and presents results in a traceable format.
Assumptions and Units
- SI units are the baseline; input unit consistency must be verified by the user.
- The calculation path is deterministic (same inputs = same outputs).
- If default material/environment values are used, replace them with project-specific values.
Limits / Boundaries
- This tool is intended for preliminary sizing and technical checks, not final design approval.
- When inputs are outside expected ranges, validate input quality before interpreting outputs.
Reference Standard
- ISO / DIN / VDI references and common engineering handbooks
Validation Example
Validation example
| Input | Expected Output |
|---|---|
| Input set: Unit-consistent project values | Expected output: Tool result is in the same order as standard references |
Note: In real projects, run at least one manual check or reference-table comparison.
Version and Update
- Version
- v0.1.0
- Last updated
- 2026-03-04
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Glossary
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