Coal mine

Characteristics of lubricating oil for mining machinery:

(1) The oil tank volume of mining machinery is small; Low amount of lubricating oil installed; High oil temperature during operation; Require lubricating oil to have good thermal stability and oxidation resistance.

(2) The harsh mining environment requires lubricating oil to have good rust prevention, corrosion resistance, and emulsification resistance; When lubricating oil is required to be contaminated; Its performance will not change significantly; Less sensitivity to pollution.

(3) Open pit mines require that the viscosity of lubricating oil should vary less with temperature; Avoid high temperatures; Oil viscosity is too low; So that it cannot form a lubricating film; Also, avoid high viscosity at low temperatures; Making it difficult to start and operate.

(4) Machinery used in mines prone to fire and explosion accidents, and lubricants with good flame resistance are required to be used; Flame resistant liquid; Combustible mineral oil cannot be used.

(5) Require lubricants to have good adaptability to seals; To avoid damage to the seals

 
Oil for mining machinery

1. gear oil

(1) Requirements of mine gear lubrication on gear oil

① Closed industrial gear oil

Appropriate viscosity

Extreme pressure property

Thermal oxygen stability

Rust and corrosion prevention

Antifoaming property

Anti emulsification performance

② Open industrial gear oil

 In addition to the above requirements, there are also special requirements for good adhesion and water resistance

(2) Gear oil for some mining machinery

Gearbox of the cutting section of the coal mining machine

Medium extreme pressure gear oil

Concentrator gearbox 

General industrial gear oil

Belt conveyor gearbox 

General industrial gear oil

Medium extreme pressure gear oil

Reducer for the traveling part of the drilling machine

General industrial gear oil

Ball mill gearbox

General industrial gear oil

Hoist gearbox

General industrial gear oil

 2. Concentrated liquid for hydraulic supports (hydraulic fluid has functions such as rust prevention, lubrication, cleaning, and cooling, stable performance, and no irritation to the human body and skin. It is suitable for hydraulic systems in coal mine hydraulic supports, mechanical industries, and metallurgical industries as transmission media.) 

Flame resistant hydraulic fluid