Products

  • Water Pump
  • Fan Clutch
  • U-Joint

    • GMB Water Pump

      GMB proudly announces that all principal component parts such as bearings (life), impellers (pumping water), mechanical seal kits (sealing), and housings (ruggedness) are designed, manufactured, and tested in house. Integration of these parts through GMB’s experience and accumulated knowledge shall lead to total quality assurance, unsurpassed by anybody else.


      Coverage from domestic applications to foreign, from micro automobile to truck and industrial, and from outdated to future models.

      Functions

      Heat produced by engine combustion is absorbed by coolant which then passes through the radiator to cool down before returning to the engine. The water pump is situated between the radiator and the engine and driven by pulley through the timing belt or the fan belt. The water pump causes coolant to circulate.

      Structure

      The water pump consists of body (aluminum die-cast, cast iron, aluminum gravity, etc), flange (forged steel, sintered iron, etc), impeller (pressed steel, cast iron, synthetic resin, etc), water pump bearing, and mechanical seal kit.


      The material is decided dependent upon performance level, quality as well as customer requirements and working conditions. Revolution power of the crankshaft is transmitted to the impeller through the water pump bearing. Impeller vanes drive coolant out into circulation jacket. The vortex chamber of the water pump filled with coolant is separated from water pump bearing by a mechanical seal kit.


      A sliding seal, like mechanical seal kit, must be lubricated all the time it is moving by coolant fluid.


      Engulfed (lubricating) coolant evaporates out into water pump bearing side and exits through weep hole on body.

    • GMB Fan Clutch

      GMB produces principal components: "bearing" (life) and "die-cast body" (strength). The GMB fan clutch assures optimal quality through reliability based on the wide experience and knowledge of GMB developed from its own production techniques.

      Functions

      It regulates air flow cooling by controlling fan speed in accordance to ambient air temperature around radiator area so that optimal heat balance is maintained in the engine cooling system. The fan clutch driven by engine revolution can continuously change its fan speed through regulating silicone oil control by the temperature sensor (bimetal). Whether driving on highway or in traffic jams, it can quickly respond to temperature change. Fan speed controlling will minimize power loss, realize optimal temperature level, and enhance quietness.

      Structure

      Temperature sensitive bimetal forces the 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 the slide valve, and centrifugal force pushes silicone oil to flow into function chamber. Viscous silicone oil mass transmits pulley shaft revolution through the rotor and case to the fan. The slide valve closes flow control aperture at lower temperature. Silicone oil in function chamber discharges through exit aperture by centrifugal force coming back to the reservoir. Reduced mass of silicone oil loses torque and rotor idles. Then the fan reduces revolution.

    • GMB Universal Joint

      Driveshaft incorporated with universal joint is widely in use not only in automotive industry but also all other industrial scenes. Purpose: high torque transmission in limited space. GMB is specialized in universal joint, the key element of module like driveshaft or propeller shaft. GMB is able to meet different requirements and shaft sizes of OEM customers. GMB also covers global aftermarket with wide line-up and proudly extends its brand name. This service is realized by GMB’s thorough in-house production. GMB maintains production, engineering knowledge, and experience to produce universal joints of the highest quality viable under all conditions at economical cost.

      Structure

      Universal joint consists of spider (cross) and 4 grease-filled roller bearings. It can transmit large torque at low friction. Spider with journal pegs and bearing cases as outer ring were hot forged or cold formed and machined. They are later carburized in furnace so that increased ruggedness and wear resistance are obtained. Parts are finally ground to design size under severe tolerance. Oil seal as well as dust cover are also in use to protect internal journal area from intrusion of foreign material. Variety of grades and materials are selected to respond to extreme conditions such as very hot/cold temperatures.