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Kilogram-Force Meter [kgf·m]

Kilogram-force meter (kgf·m) is a unit of torque or moment of force that measures the rotational force produced when a force of one kilogram-force (kgf) is applied at a distance of one meter (m) from a pivot point. This unit is frequently used in mechanical engineering, physics, and industrial applications where moderate to large torques are involved.

The kilogram-force is based on the gravitational force exerted by a mass of one kilogram, making kgf·m a practical unit when forces are considered in terms of mass under Earth's gravity. This unit is commonly found in contexts where traditional metric units are preferred but the standard SI unit, the newton-meter (N·m), is not yet universally applied.

To convert to SI units, 1 kgf·m is approximately equal to 9.80665 newton-meters. This unit is particularly useful in machine design, engine torque specifications, and load testing, where understanding the torque magnitude in practical, everyday terms is important.

Using kilogram-force meters helps engineers ensure machinery operates safely and efficiently by accurately measuring and controlling torque forces in a way that aligns closely with intuitive mass-based forces.

Kilogram-Force Millimeter [kgf·mm]

Kilogram-force millimeter (kgf·mm) is a unit of torque or moment of force used to quantify small rotational forces where the force is expressed in kilogram-force (kgf) and the distance in millimeters (mm). It represents the torque generated when a force of one kilogram-force is applied at a lever arm length of one millimeter from the pivot point.

This unit is commonly employed in fields such as mechanical engineering, precision instrument calibration, and small machinery design. It is especially useful for measuring or specifying torque in devices requiring fine control over small rotational forces, such as torque on small bolts, delicate mechanical assemblies, or calibration of torque wrenches.

While the standard SI unit for torque is the newton-meter (N·m), kgf·mm provides a convenient scale in applications where the metric system is preferred but the force is expressed in kilogram-force due to historical or practical reasons. For reference, 1 kgf·mm is approximately equal to 9.80665 × 10⁻³ newton-meters.

Using kilogram-force millimeters allows for precise torque measurement in contexts where small-scale torque values are critical to ensure proper assembly and operation of mechanical systems.