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    Zhengzhou General Mining Machinery Co., Ltd. is not only a manufacturer of industrial grinding mill, crusher and sand making machines but also a high-tech enterprise that integrates R&D, productio...
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    General Mining Machinery products have passed the international ISO:9001, GOST, the European Union CE certification,and a number of other quality certifications and have been shining in more than 120 ...
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  • Company News
    10 t/h limestone grinding powder production line in Nanchuan, Chongqing With the increasing of environmental protection problems, the government has adopted more strict measures to rectify the...
    Successful Jaw Crusher Consignment to Indonesia 2017.11.10 is a red letter day on which PEX250*1200 jaw crusher prepared for our Indonesia client has been successfully ...
  • Industrial News
    Analysis on Development Prospect of Raymond Mill in Calcium Silicate Board Market Speaking of the development prospect of Raymond mill in calcium silicate board market, someone might show doubt about th...
    Industrial milling machines enters into agriculture fertilizer market and contributes to agricultura Industrial milling machines take important position of production and process in agricultural development and are indisp...
  • Grinding Knowledge
    Which mill has higher investment values and good development prospect? Engineering project investment is not a little thing no matter for the individual or the enterprise and it needs to take...
    How much is industrial grinding machine and what are the specifications of stone grinding machines? According to grinding machine types, industrial grinding machine is divided into Raymond mill, high-pressure suspension ...
  • Crushing Knowledge
    Commonly used mine crushing equipment - jaw crusher Jaw crusher(is one of the most common crushing equipment and one of the most practical equipment in the process of mine ...
    Which kind of crusher has a capacity of 400t/h for stones? Which crusher has a capacity of 400t/h for stones? Capacity of 400 t/h is relatively high for stone crushing and ordinar...
  • Industrial Grinding
    Project DackgroundBauxite is a kind of high quality fireproof material, it can also be used for aluminum smelting, and i... MORE>>
  • Aggregate
    Project BackgroundIn Decmeber, 2016, we made a 200 t/h basalt crushing production line for a customer in India. The out... MORE>>
  • Metallic Mineral
    Project BackgroundThe process of copper beneficiation line is relatively simple. Raw materials are crushed before the gr... MORE>>
  • Building Materials
    Project BackgroundRiver pebble is a natural stone taken from tore which is formed by uplifted ancient river bed through ... MORE>>
  • Industrial Grinding
    Limestone Product IntroductionLimestone’s main component is calcium carbonate(CaCO₃)and its hardness is 3-4 in Mohs. Lime and lime...
    Calcite Product Introduction   Calcite is widely distributed. Its hardness is 2.7~3.0, and the weight is 2.6~2.8. It’s...
  • Aggregate
    Pebble Product Introduction  Pebble is the product of yellow sand mining. It is named after a goose egg. The pebbles,...
    Coal Gangue Product IntroductionCoal gangue is a solid waste discharged from the process of coal mining and coal washing. It is a da...
  • Metallic Mineral
    Gold ore Product Introduction Gold ore is a mineral that contains gold or gold compounds. Gold ore resources in China are ab...
    Molybdenum Ore Product Introduction Molybdenum metal is a very important metal, which is known as war metal. With high strength, h...
  • Building Materials
    Construction waste Product Introduction Construction waste refers to waste residue, scrap metal, crushed stone, waste residue in morta...
    Machine-made Sand Product Introduction    The demand of sand in China is more than 10 billion tons, and the industry scale is ab...
  • Assurance
    General Mining Machinery believes the value of service, so we heighten credibility by service, strengthen brand by ...
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    As a high-tech enterprise integrating production, market and service, General Mining Machinery already can provide ...
  • Maintenance
    Zhengzhou General Mining Machinery is willing to contribute our theory and experience of equipment maintenance; Collect ...
  • Spare Parts
    We set up a special after-sales service department to connect with the users, and we are responsible for the demand for ...
  • Industrial Grinding
    In industrial grinding filed, General Mining Machinery grasps professional technologies throughout the entire process ch... MORE>>
  • Aggregate
    In aggregate filed, General Mining Machinery with professional crushing technologies for soft, medium hard and hard mate... MORE>>
  • Metallic Mineral
    In metallic mineral filed, General Mining Machinery can process soft, medium hard and hard minerals and provide various ... MORE>>
  • Building Materials
    In building material field, General Mining Machinery provides clients with professional resolution and complementary pro... MORE>>
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Grinding machine-Daily Maintenance

A. Ten major inspection items for grinding machine
  1. hear the operation sound of grinding machine and separator frequently to inspect if there are some abnormal noise;

  2. inspect if there are phenomena of oil leakage, water leakage and material leakage of speed reducer and other devices;

  3. inspect the wearing condition of trolley sealing every month;

  4. inspect the functions of scraper blade and material returning system;

  5. inspect the pump station every day including fuel level, pressure gage and filter, and the used fuel should be as required;

  6. inspect oil returning and oiling pressure conditions of grinding roller lubrication station;

  7. inspect oil pipes and valves for oil leakage;

  8. inspect the wearing condition of millstone and grinding roller liner every 1,000 hours and record it;

  9. inspect the pressure of energy accumulator every week;

  10. inspect centre frame, nozzle ring, wind guide blades, spray pipe and other accessories inside the grinder regularly. 

B. Notes on grinding machine utilization+
C.Maintenance instruction for grinding machine blower +
D. Grinding machine maintenance +


Crushing machine-Daily Maintenance

A.Jaw Crusher-Daily Maintenance
  1. inspect the tightening and wearing conditions of jaw head [once a day]

  2. inspect the tightening and wearing conditions of side fender [once a day]

  3. inspect if there are fragments and other things around the discharging mouth [once a day]

  4. inspect the tightening condition of all blots [once a day]

  5. 5. to inspect the condition of bracket [once a day]

  6. 6. to inspect the condition of bracket spring and adjust it to balanced status [once a day]

  7. inspect the idling sound, if there’s noise, please tighten the bracket spring [once a day]

  8. 8. to inspect the crack condition of flywheel [once a week]

  9. 9. to inspect the length of downtime [once a day] and to record its decreasing trend [once a week]

  10. 10. to inspect the temperature of bearing and record it and observe its increasing trend [once a week]

  11. 11. to inspect the wearing condition of all belts [once a week] 

B.Impact Crusher-Daily Maintenance+
C.Cone Crusher-Daily Maintenance+
D.Hammer Crusher-Daily Maintenance +


Sand-making Machine-Daily Maintenance

A. Impeller maintenance
  1. 1. impeller is a key component of sand-making machine as well as a vulnerable part. To protect impeller well and increase its stability can not only improve machine’s working efficiency but also extend machine’s utilization life.

  2. 2. looked through the input port, the impeller should rotate in anti-clockwise direction, otherwise the motor wiring position should be changed; materials should be evenly and continuously fed in with required size, otherwise impeller unbalance and wearing would be caused.

  3. 3. feeding should be stopped before machine shut down, otherwise, the impeller would be damaged; regular inspection of impeller wearing condition is necessary and replacement of worn impeller timely guarantees normal running.

B.What rotating speed can extend machine service life?  +
C. Notes on sand-making machine utilization+
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