R5
Oil-lubricated rotary vane vacuum pumps
With the invention of the R5 oil-lubricated rotary vane vacuum pump, Dr Karl Busch has revolutionized food packaging. And today, we are the market leader in vacuum packaging.
However, the R5 is not limited to this application but represents the industry standard for a wide range of applications. Every day, over 3 million R5 vacuum pumps are in operation around the globe.
In the course of over 50 years, we have continuously developed and optimized rotary vane technology. Always with a strong focus on energy efficiency.
Throughout the industry, the R5 is known for its robustness and reliability. You can always rely on the R5 – whether used intermittently or around the clock.
A wide range of sizes, design options and accessories ensures that the R5 is the perfect match for many processes.
Maintenance can easily be carried out by the operator. Apart from changing oil and filters at regular service intervals, no further maintenance is required.
Operating principle
R5 rotary vane technology is synonymous with a robust and functional construction. In a cylindrical housing, a rotor with three vanes is mounted eccentrically. Due to centrifugal force, these vanes slide out and form chambers between themselves and the housing.The pumped medium is trapped inside these three chambers. During further rotation, their volume is constantly reduced. Thereby, the pumped medium is compressed and transported to the outlet.
R5 vacuum pumps operate with recirculating oil lubrication. A downstream oil separator segregates sealing oil and pumped medium for efficient reuse of oil.
A non-return valve prevents the pumped medium from flowing back into the process after the vacuum pump is switched off.
Discover our R5 Series
They are perfectly suited for installation in confined spaces, for example in vacuum packaging machines. The integrated motor and transmission make them the ideal choice for fixed installations.
R5 KB feature highly durable Busch fiber-reinforced epoxy resin vanes as standard. This ensures an optimum performance and long service life.
This makes them the perfect choice for food applications in deli counters or restaurants. For example, for sous-vide cooking or marinating and preserving foodstuffs.
R5 PB series vacuum pumps feature highly durable rotor vanes as standard. This ensures a long service life and makes them nearly maintenance-free. A thermo-protecting element prevents the motor from overloading.
These vacuum pumps are characterized by high pumping speeds even in low pressure ranges and therefore rapid evacuation times.
They feature highly durable high performance vanes as standard, ensuring excellent performance and a long service life.
R5 RA vacuum pumps are designed for continuous operation. An integrated float valve regulates the oil return depending on the oil level.
Vacuum pumps of the RA series are ultimate pressure-proofed. They can be operated continuously at ultimate pressure without overheating.
High efficiency is the outstanding quality of this series. With an up to 30% lower energy consumption compared to conventional rotary vane vacuum pumps.
Heat emission has also been reduced thanks to an improved cooling air flow. Together with an optimized heat discharge, this contributes to a low ambient temperature.
All service relevant components are mounted on one side of the vacuum pump for easier access. Therefore, the service routine becomes significantly faster. And the smooth surface design facilitates cleaning.
The single exhaust filter can be replaced in less than a minute. Moreover, it provides enhanced filtration performance for best-in-class oil separation.
R5 RD vacuum pumps feature hard-wearing carbon fiber vanes as standard, ensuring excellent performance and a long service life.
These vacuum pumps are certified in accordance with directive 2014/34/EU for II 1G h IIB3 T4 Ga inside and II 2G h IIB3 T4 Gb outside the vacuum pump.
Their ATEX certification makes them suitable for the extraction of almost all materials in the IIB3 explosion group. They can also be used for the extraction of petrol vapor.
R5 RE series vacuum pumps are driven by a directly flange-mounted explosion-proofed electric motor. They come with flame arresters as standard.