The Institutions common problems and solutions of Worm Gear Units

    Worm Gear Units used to transmit motion between two staggered and motivation. Where between worm and worm gear and rack equivalent plane , the worm has a similar shape with the screw .
   
   一、Common problem and its causes
   1.Fever reducer and oil spills . To improve efficiency, worm gear generally used non-ferrous metals do worm, the worm then uses a hard steel . As the sliding friction drive , running will produce more heat, so that the parts and seals reducer thermal expansion differences between , thus forming a gap in the mating surface , lubricating fluid thinning due to temperature rise , could easily lead to leakage . The main reason for this situation there are four points, one material with the unreasonable ; Second, engaging the poor quality of the surface of the friction surface ; Third, the choice of lubricant additive amount is incorrect ; Fourth assembly quality and the environment is poor .
   2.Worm wear. Worm generally use tin bronze , paired with 45 hardened steel worm material to HRC45 ~ 55, or 40Cr hardened HRC50 ~ 55 after Worm Grinding to roughness Ra0.8μm. Gear wear during normal operation is very slow , some gear can be used for 10 years or more. If you wear faster , we must consider selection is correct, whether overload operation, as well as worm material, assembly quality or environmental reasons .
  3.Small helical gear transmission wear. Generally occurs in the vertical installation of the gear unit , primarily related to the added amount of oil and oil- related species . Vertical installation , it is likely to cause insufficient amount of lubricating oil , gear stopped, the motor and gear reducer between the oil drain, lack of proper gear lubrication protection . Reducer startup, the gear due to lack of effective lubrication lead to mechanical wear or damage.
  4.Worm bearing damage. When failure occurs , even if sealed gear box , or often found inside the gear reducer oil is emulsified bearing rust, corrosion and damage . This is because the gear in operation for some time , gear oil temperature has cooled condensate produced is mixed with water . Of course, the quality of the bearing and the assembly process are closely related.

Worm gear

   二、The solution
   1.Ensure the quality of assembly . Some can be purchased or homemade special tools, gear parts removal and installation , try to avoid tapping with a hammer and other tools ; replacement gears , worm , try to use original parts and replaced in pairs ; assembly output shaft , pay attention tolerances ; want to use anti-adhesive or Hongdan oil to protect the hollow shaft , with the area to prevent rust or wear debris, repair difficult removal.
   2.Selection of lubricants and additives . Worm gear reducer 220 # gear oil is generally used for heavy-duty , frequent starting , poor use of the environment reducer, can use some lubricant additives, gear oil stopped running gear is still attached to the gear surface to form a protective film to prevent heavy load , low speed, high torque and starts direct contact between the metal . Additives containing modifiers and anti- leak seal agent, the seals remain soft and flexible , reduce oil leakage .
   3.Gearhead choice of installation location . Location permitting , try not to use vertical installation . Vertical installation, the amount of oil added a lot more than the horizontally mounted , easy to cause fever reducer and oil spills .
   4.Establish lubrication maintenance system . According to the lubrication " Five of" principles reducer for maintenance , so that each person has a responsibility gear regularly checked and found that the temperature rise significantly , over 40 ℃ or oil temperature exceeds 80 ℃, decline in the quality of oil or oil found more copper and produce abnormal noise and other phenomena , they should immediately stop using , timely maintenance , troubleshooting, replacement of oil . Come on , pay attention to fuel, to ensure correct lubrication of gear.
   Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China. We can supply a full-range of power transmissions products, such as chains,Transmission Chain, sprockets and plate wheels, pulleys, gearboxes, motors, sleeve coupling, gears and racks. Our product range also covers locking assemblies (clamping elements/locking device), taper bushes, QD bushes, bolt-on hubs, torque limiters, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes. Our products are used in many different industry sector, like in automation engineering, drive engineering, conveyor technology, assembly and handling technology, packaging industries, the beverage, food and medical engineering, pharmaceutical production, and laboratory equipment.
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