Engine Cooling Fan Clutch (920-2070) by GMB®. Rotation: Clockwise. Thermal Fan Clutch. Standard Duty. GMB Fan Clutch assures the optimal quality through reliability based on GMB wide experience and knowledge developed from its own production techniques.
Designed to deliver trouble-free, consistent performance
Right for your vehicle and lifestyle
Made from high-quality materials for ultimate durability
Manufactured to meet or exceed strict quality requirements
It regulates cooling air flow by controlling fan speed in accordance to ambient air temperature around radiator area so that optimal heat balance is maintained in engine's cooling system. Fan clutch driven by engine revolution can continuously change its fan speed by regulating silicone oil control by temperature sensor (bimetal). Whether driving on highway or in traffic jams it can quickly respond to temperature change. Controlling fan speed will minimize power loss, realize optimal temperature level, and enhance quietness.
Temperature sensitive bimetal turns slide valve to open and close flow control aperture. Opening and closing action connects or disconnects passage of silicone oil in reservoir to function chamber (labyrinth). Raised temperature opens flow control aperture by turning slide valve and centrifugal force pushes silicone oil flowing into function chamber. Viscous silicone oil mass transmits pulley shaft revolution through rotor and case to fan. Slide valve closes flow control aperture at lower temperature. Silicone oil in function chamber discharges through exit aperture by centrifugal force coming back to reservoir. Reduced mass of silicone oil loses torque and rotor idles. Then fan reduces revolution.
GMB® is a reliable manufacturer of premium quality cooling and engine drive systems, transmission parts, axle parts, driveline components, steering and suspension parts, and bearings. Being on the market for over seventy years, the company's products are available for both foreign and domestic applications, late and early models. The products are suitable for various vehicles from micro automobiles to trucks. GMB has achieved numerous certificates, including ISO14001, TS16949, and OHSAS 18001.
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GMB® - Engine Cooling Fan Clutch
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