USUI CO., LTD. List of Products and Services

The fan drive is a fluid clutch that controls the cooling fan for engine cooling at the appropriate rotational speed. A bimetallic element responds to the air temperature after passing through the radiator, adjusting the amount of silicone oil inside the fan drive to control the fan speed appropriately. It maintains the heat balance of the engine cooling system at all times, improving fuel efficiency and reducing fan noise. 【Features】 - By combining with a plastic cooling fan, cooling characteristics are improved, achieving excellent reliability. - The fan drive is available in a series tailored to the cooling performance of engines ranging from small to large classes, always providing the optimal combination of specifications. For more details, please contact us or download the catalog.

The ECFD (Externally Controlled Fan Drive) uses an electromagnet instead of a bimetal to control the fan speed by inputting an electrical signal from an external source, as opposed to the conventional fan drive that relies on a bimetal responding to the air temperature after passing through the radiator. It incorporates information such as engine coolant temperature, engine speed, and fan speed into the ECU, calculates the ideal fan speed for the engine, and converts that information into an electrical signal to control the ECFD. 【Features】 - Always enables optimal fan speed control for engine cooling. - Improves fuel efficiency, enhances engine combustion efficiency, and reduces fan noise. - Offers a lineup of ECFDs ranging from small to large sizes. For more details, please contact us or download the catalog.

Magnetic couplings are clutches that utilize the hysteresis phenomenon of magnets by placing permanent magnets and hysteresis materials facing each other with a slight gap in between. They have a torque constant transmission characteristic and can generate the same transmission torque semi-permanently by using permanent magnets. 【Features】 - There are 8 basic types depending on the size of the magnets, and by adjusting the gap between the magnets, the transmission torque can be varied, allowing for use with various specification torques. - Currently, they are used in various equipment such as railway facilities, semiconductor equipment, and pipe manufacturing equipment. For more details, please contact us or download the catalog.