Replacement motors for pumps in central lubrication systems
The lubrication pump motor is of particular importance in central lubrication systems. It converts electrical current into kinetic energy and in this way drives the lubrication pump. This can build up a defined pressure as a result of the stroke or rotary movement that occurs, and thereby convey the lubricant via lines to the distributor. The lubricant is finally metered at the distributor and passed on to the designated lubrication points.
Vogel motors of the type DU56N2075 + 299 or DM7 are suitable, for example, for use with gear pumps and are therefore often used in central single-line or circulation lubrication systems. Gear pumps belong to the positive displacement pumps and essentially consist of a housing with two gear wheels, one of which is driven by the motor of the lubrication pump. The rotary motion conveys the lubricant from the reservoir to the outlet under pressure build-up and from there to the metering device. If the gear pump is defective, it is often necessary to install a replacement motor.
Technical details on Vogel motors for central lubrication systems
If you are looking for a replacement motor for a single-line or circulation lubrication system, the hydraulic performance of the pump should be taken into account. This represents the most important technical parameter for the engine and results from the product of pressure and volume flow. When calculating the electrical power, i.e. the power drawn from the power grid, the efficiency of the replacement motor must also be taken into account.
The Vogel motor DU56N2075 + 299, for example, has an output of 0.075 kW and is connected to industrial three-phase AC networks. The model is suitable as a replacement motor for gear pumps of the types M1, M2, MF1, MFE1, MFE2 and MFE5. The pump runs in nominal operation at a frequency of 50 Hz at a speed of 2,700 revolutions per minute. The comparable model of type DM7 has an output of 0.03 kW at a speed of 1,350 revolutions per minute. The three-phase electric motor from Vogel also runs with three-phase AC voltage and can be used as a replacement motor in central single-line lubrication systems.
Advantages of central lubrication systems with Vogel engines
Centralized lubrication systems with Vogel motors such as the models DU56N2075 + 299 or DM7 offer the advantage of a very precise pressure build-up and a correspondingly good dosage of the lubricant. With the help of a hydraulic control, the downtimes and running times of the pump can be specified so that the right amount of lubricant arrives at the designated places.
Delivery pressure and delivery flow essentially depend on the electrical output of the lubrication pump motor. For example, the MF5-2000 gear pump with Vogel DM7 motor has a flow rate of 0.5 liters per minute at a pressure of 27 bar. This corresponds to a hydraulic output of 22.5 watts (0.0225 kW). If you compare this hydraulic power with the electrical power at the operating point of 0.03 KW, the efficiency is 75 percent.