System International Units
The “Measurement Act” in Japan was amended in 1992, with the new Measurement Act being brought into practical use on November 1, 1993, and followed by a complete switch-over to the international system of units, “SI units”, after a grace period ending on October 1, 1999. As a rule, non-SI units were no longer able to be used in business transactions or certifications.
TAKIGEN has therefore also switched over to SI units for the values of permissible loads and other characteristics of our products.
SI units make a clear distinction between both the kilogram (kg) unit of mass and the Newton (N) unit of force, with 1 kg being equivalent to the International Prototype of the Kilogram, and 1 N being a force of 1 m/s2 of gravitational acceleration applied to an object with a mass of 1 kg.
The conventional 1 kgf is designated as an international standard of force of gravitational acceleration of 9.80665 m/s2 applied to an object with a mass of 1 kg.
Note: Actual gravitational acceleration above the earth varies very slightly per longitude and altitude.
Quick conversion chart
| Mass | SI unit | Conversion ratio | Conversion factor from conventional units |
|---|---|---|---|
| Force/load | N | 1N=0.102kgf | ×9.80 |
| Stress | N/mm² or MPa |
1N/mm2=0.102kgf／mm² | ×9.80 |
| Pressure | MPa | 1MPa=10.2kgf／cm² | ×0.098 |
| Torque | N･m | 1N･m=0.102kgf･m | ×9.80 |
| Work energy | J | 1J=0.102kgf･m | ×9.80 |
| Work | KW | 1KW=102kgf･m／sec | ×0.0098 |
| 1KW=1.36PS | ×0.735 |
(Remarks Pa=1N/m²)
