Convert Pound square inches to Kilogram square millimetres
Convert Pound square inches (lb·in²) to Kilogram square millimetres (kg·mm²) instantly and accurately.
Conversion Formula
kg·mm² = lb·in² × 292.6396534
About Pound square inches
The pound square inch (lb·in²) equals ≈2.926 × 10⁻⁴ kg·m², the standard US customary unit for motor and machinery rotors. Rockwell Automation, Parker Hannifin, and Allied Motion servo sizing catalogs express rotor inertia in lb·in²; US machine-tool spindle and conveyor drive specifications use lb·in². High-speed spindle rotors: 5-50 lb·in². 1 lb·in² ≈2.926 × 10⁻⁴ kg·m² = 1/144 lb·ft².
About Kilogram square millimetres
The kilogram square millimetre (kg·mm²) equals 10⁻⁶ kg·m², widely used in CAD software and precision mechanical engineering. SolidWorks, CATIA, and Siemens NX report mass moment of inertia in kg·mm² for gear blanks, pulley hubs, and precision spindle assemblies. Industrial small servo motor rotors: 100-10 000 kg·mm². 1 kg·mm² = 10⁻⁶ kg·m² = 10 g·cm² = 0.01 kg·cm².
Quick Reference Table
| Pound square inches (lb·in²) | Kilogram square millimetres (kg·mm²) |
|---|---|
| 1 lb·in² | 292.64 kg·mm² |
| 2 lb·in² | 585.279 kg·mm² |
| 5 lb·in² | 1463.2 kg·mm² |
| 10 lb·in² | 2926.4 kg·mm² |
| 25 lb·in² | 7315.99 kg·mm² |
| 50 lb·in² | 14632 kg·mm² |
| 100 lb·in² | 29264 kg·mm² |