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R 5 RA 0750 A

The R 5 RA 0750 A belongs to the Busch product family of proven R 5 rotary vane vacuum pumps. It is ideally suited to applications in heat treatment and various coating and metallurgical processes, both as a single unit or as part of a vacuum system. Its performance characteristics and the low ultimate pressure of 0.08 hPa (mbar) make it the perfect choice for medium vacuum use.

The 50 Hz version of the R 5 RA 0750 A is equipped with a frequency converter allowing continuous operation at 60 Hz. This feature improves both pumping speed and ultimate pressure. A version with a 60 Hz motor as standard is also available.

The thermal stability of these high-performance vacuum pumps is maintained by a special water cooling system. The robust frame and small flange connector allow vacuum boosters to be installed directly. This compact arrangement increases pumping speed and permits operation in high vacuum ranges.

When combined with a vacuum booster it is also ideally suited to high vacuum applications.You will find more information on advantages, technology, accessories and spare parts, applications as well as a complete product overview on our R 5 RA series type page.

Series Type Page R 5 RA
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Contact us directly (Busch United States):
Get in contact or +1 757 463 7800

Technical Specifications

R 5 RA 0750 A

Rotary vane technology is synonymous with a robust, functional construction. R 5 rotary vane vacuum pumps are characterized by an optimum design and perfectly synchronized components and materials. The constantly high vacuum level in continuous operation is ensured by recirculating oil lubrication and state-of-the-art precision manufacturing. 

A sophisticated oil separator ensures efficient use of oil. A non-return valve in the inlet flange prevents the pumped medium from flowing back into the vacuum process after the vacuum pump is switched off. The R 5 RA 0750 A is driven by a directly flange-mounted standard electric motor, with an efficiency class of IE3, while operating at 50 Hz and 60 Hz.

Dimensional Drawing R 5 RA 0750 A
R 5 RA 0750 A

Pumping speed

Air at 20 °C. Tolerance: ± 10%

60 Hz
Pumping speed
Technical data R 5 RA 0750 A
Max. pumping speed m³/h 60 Hz 750
Ultimate pressure hPa (mbar) 0.08
Nominal motor rating kW 60 Hz 18.5
Nominal motor speed min-1 60 Hz 1200
Power consumption at 75 Torr kWh 60 Hz 14.5
Power consumption at ultimate pressure kWh 60 Hz 8.4
Sound level (ISO 2151) dB(A) 60 Hz 78
Oil capacity l 15
Approximate weight kg 670*
Dimensions (L x W x H) mm 1570 x 975 x 915*
Gas inlet / Gas outlet DN 100 / DN 100
* values may vary slightly due to different motor versions

Accessories and Spare Parts

  • Double gas-ballast valve, solenoid operation
  • Adapter flange for vacuum booster
  • Various inlet filters
  • Oil level switch
  • Temperature switch
  • Vacuum pump oils for all applications


R 5 RA 0750 A

Would you like to know more?
Contact us directly (Busch United States):
+1 757 463 7800 Get in contact

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