Cement Mining Lubrication Oil Pump For Gearboxes Forced Circulation Of

Product Specification

The M-series dedicated lubrication pump for gearboxes forced circulation of lubricating oil

1. Introduction

The M-series dedicated lubrication pump for gearboxes is an integrated or external lubrication device widely used inside industrial gearboxes (e.g., for cement mills, coal mining, metallurgical rolling mills, and other large, heavy-duty gearboxes). Its core function is to provide a continuous, reliable, and clean forced circulation of lubricating oil for the host gearbox, ensuring that critical friction pairs such as gears and bearings receive adequate lubrication, cooling, and cleaning. This series of pumps is typically driven directly by the gearbox's input shaft or an auxiliary drive shaft, forming a complete circulatory system with the gearbox. It is an indispensable key accessory for ensuring the safe, stable, and long-term operation of large, heavy-duty gearboxes.

2. Advantages

• High Integration & Reliability: Designed specifically for particular gearboxes, offering compact installation. Driven by the gearbox's own power, it requires no additional motor or control, ensuring high reliability and eliminating external dependencies.

• Efficient Forced Lubrication: Provides a continuous and stable oil flow, ensuring that lubricant reaches all necessary points (e.g., bearings located far from the oil sump) even during low-speed operation or startup, offering far superior performance compared to simple splash lubrication.

• Excellent Cooling Effect: Circulates oil to carry away heat generated by gear meshing and other sources, dissipating it through the gearbox housing or an external cooler, effectively controlling the system's oil and operating temperature.

• Outstanding Cleaning Ability: The circulating oil flow flushes away tiny wear particles and contaminants generated by friction pairs, which are then removed by integrated or external filters, maintaining oil cleanliness and extending the life of both the oil and components.

• Easy Maintenance: Modular design often features easily replaceable filter elements, simplifying maintenance.

• Safety Protection: Can often be equipped with pressure switches or flow monitors interlocked with the main machine's control system to provide alarms or shutdowns in case of insufficient lubrication pressure or system failure, providing critical protection for the gearbox.

3. Key Technical Parameters

• Drive Method: Typically driven by the gearbox input shaft or an auxiliary drive shaft via internal gears/worm gears.

• Displacement: Designed based on the oil demand of the specific gearbox, commonly measured in liters per minute (L/min) or cubic centimeters per revolution (cc/rev).

• Rated Pressure: Designed operating pressure, usually between 1.0 to 4.0 MPa, sufficient to overcome resistance from piping and filters.

• Suitable Oil Type: Industrial gear oils (e.g., ISO VG 150 to VG 680).

• Filtration Rating: Precision of integrated or external filters, typically 25μm to 40μm.

• Materials: Pump body often made of cast iron or steel; gears made of alloy steel for wear resistance.

• Connections: Flange or threaded port sizes for oil inlet and outlet.

4. Applications

M-series lubrication pumps are almost exclusively used in large, heavy-duty industrial gearboxes requiring forced lubrication:

• Cement Industry: Main reducers for ball mills, roller presses, and rotary kiln drives.

• Mining Industry: Gearboxes for crushers, ball mills, and large hoists.

• Metallurgical Industry: Gearboxes for rolling mill main drives, straighteners, and continuous casters.

• Power Industry: Reducers for coal pulverizers in thermal power plants.

• Other Heavy Industries: Heavy-duty gearboxes in large conveyors, mixers, marine propulsion, etc.