Manual pumps for manual lubrication
In contrast to conventional, automated single-line centralized lubrication systems, manual lubrication is used in machines, systems and vehicles with discontinuous lubricant requirements. Even if only a very few points have to be lubricated or greased regularly, it makes sense to use a manual pump or hand grease gun.
Manual grease guns such as the PFE PowerLuber model either have an integrated grease cartridge or can be filled with loose grease. Classic areas of application for this type of lubrication are mobile systems or vehicles such as agricultural machinery, construction vehicles or trailers.
If, on the other hand, a system is to be lubricated with oil or fluid grease, hand pumps such as the POE-15 are used. These piston pumps have a limited delivery volume and are therefore used in small central single-line systems. As with automated single-line lubrication systems, in addition to the pump, the system is also equipped with a metering device for precise metering of the lubricant and the necessary lines.
Technical basics for manual pumps and manual grease guns
Manual pumps generally work on the reciprocating principle. In the first cycle, a piston sucks the grease into a cylinder and, after the inlet valve closes, pushes it through the outlet valve in the second cycle. With hand pumps such as the POE-15 model, high pressures of up to 30 bar are generated in this process. One of the main advantages is that the lubricant can be precisely metered with manual piston pumps and assigned to the lubrication points. Hand pumps are also used in progressive lubrication systems. Compared to single-line lubrication pumps, however, these are a little larger and, as in the case of the piston pump PF-23, can reach pressures of up to 100 bar.
Manual grease guns such as the PFE PowerLuber are particularly suitable for maintenance and repair tasks. The models in this category are suitable for both professional mechanics and do-it-yourselfers and are able to generate pressures of up to 10 bar. The operating principle of the PFE PowerLuber handheld grease gun is also based on a piston that moves up and down in a cylinder. Cartridges can be used to supply lubricating grease so that the grease gun can be used very flexibly and flexibly.
Advantages of manual lubrication systems
Manually operated lubrication systems with hand pumps or grease guns offer the advantage that the user can control and influence the lubrication himself. Especially in the case of mobile machines and vehicles, manual pumps can be used flexibly if there is a need for lubricant. Locations in complex systems that are particularly difficult to access can be reached with the help of lubrication nipple extensions.
Hand pumps and manual grease guns such as the POE-15 and PFE PowerLuber models are predestined for use in mobile systems due to their compact design. Despite the simple design compared to conventional systems, very high pressures can be generated.
Technical data of the POE-15 and PFE PowerLuber models
The manually operated piston pump type POE-15 is suitable for SKF MonoFlex oil single-line systems with piston metering devices and is available with different reservoirs. 15 cm³ of oil are pressed with the hand pump at a maximum pressure of 30 bar per stroke. The model can be used at temperatures from 0 to 60 ° C and contains the valve set necessary for pressure relief and pressure limitation.
The PFE PowerLuber grease gun is used in a pressure range of up to 10 bar and is therefore suitable for smaller systems. With a weight of just over 2 kg, this variant is particularly mobile and flexible.