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R 5 RA 0165 - 0305 D

R 5 – proven and reliable. Over 3 million pumps in operation worldwide.

R 5 – proven and reliable. Over 3 million pumps in operation worldwide.

The R 5 RA 0165 - 0305 D belong to the Busch product family of proven R 5 rotary vane vacuum pumps. They have been specially designed for applications in the rough vacuum sector. Thanks to the optimized internal oil separation, these vacuum pumps guarantee clean exhaust under even the most difficult operating conditions. 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
Would you like to know more?
Contact us directly (Busch United States):
Get in contact or +1 757 463 7800

R 5 – proven and reliable. Over 3 million pumps in operation worldwide.

R 5 – proven and reliable. Over 3 million pumps in operation worldwide.


Technical Specifications

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.


When fitted with a gas-ballast valve (optional), even large quantities of vapour can be extracted. 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 0165 – 0305 D are driven by a directly flange-mounted standard electric motor, with an efficiency class of IE3.

Dimensional Drawing R 5 RA 0165 - 0305 D
R 5 RA 0165 - 0305 D
Pumping speed

Air at 70 ºF. Tolerance: ± 10%

60 Hz
Pumping speed
Technical data R 5 RA 0165 D R 5 RA 0205 D R 5 RA 0255 D R 5 RA 0305 D
Max. pumping speed 112 ACFM 141 ACFM 177 ACFM 212 ACFM
Ultimate pressure gas-ballast valve closed 0.075* Torr 0.075* Torr 0.075* Torr 0.075* Torr
Ultimate pressure gas-ballast valve open 0.375 Torr 0.375 Torr 0.375 Torr 0.375 Torr
Nominal motor rating 7.5 HP 7.5 HP 10 HP 12 HP
Nominal motor speed 1800 RPM 1800 RPM 1800 RPM 1800 RPM
Power consumption at 75 Torr 6.3 HP 7 HP 8.8 HP 9.6 HP
Power consumption at ultimate pressure 3.9 HP 5.4 HP 6 HP 6.8 HP
Sound level (ISO 2151) 72 dB(A) 74 dB(A) 74 dB(A) 76 dB(A)
Oil capacity 7 Qts. 7 Qts. 7 Qts. 7 Qts.
Approximate weight 435 Lbs. 435 Lbs. 520 Lbs. 520 Lbs.
Dimensions (L x W x H) 40 x 23 ¼ x 16 1/8 inches 40" x 23 ¼" x 16 ½" inches 43 1/8" x 23 ¼" x 16 ½" inches 43 1/8 x 23 ¼ x 16 ½ inches*
Gas inlet / Gas outlet 2" / 2" NPT 2" / 2" NPT 2" / 2" NPT 2" / 2" NPT
All performance data is based on ambient conditions of 14.7 PSIA and 70°F, and has a tolerance of ± 10%.  
* values may vary slightly due to different motor versions

Technical Specifications

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.


When fitted with a gas-ballast valve (optional), even large quantities of vapour can be extracted. 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 0165 – 0305 D are driven by a directly flange-mounted standard electric motor, with an efficiency class of IE3.

Dimensional Drawing
R 5 RA 0165 - 0305 D
R 5 RA 0165 - 0305 D
Pumping speed

Air at 70 ºF. Tolerance: ± 10%

60 Hz
Pumping speed
Technical data R 5 RA 0165 D R 5 RA 0205 D R 5 RA 0255 D R 5 RA 0305 D
Max. pumping speed 112 ACFM 141 ACFM 177 ACFM 212 ACFM
Ultimate pressure gas-ballast valve closed 0.075* Torr 0.075* Torr 0.075* Torr 0.075* Torr
Ultimate pressure gas-ballast valve open 0.375 Torr 0.375 Torr 0.375 Torr 0.375 Torr
Nominal motor rating 7.5 HP 7.5 HP 10 HP 12 HP
Nominal motor speed 1800 RPM 1800 RPM 1800 RPM 1800 RPM
Power consumption at 75 Torr 6.3 HP 7 HP 8.8 HP 9.6 HP
Power consumption at ultimate pressure 3.9 HP 5.4 HP 6 HP 6.8 HP
Sound level (ISO 2151) 72 dB(A) 74 dB(A) 74 dB(A) 76 dB(A)
Oil capacity 7 Qts. 7 Qts. 7 Qts. 7 Qts.
Approximate weight 435 Lbs. 435 Lbs. 520 Lbs. 520 Lbs.
Dimensions (L x W x H) 40 x 23 ¼ x 16 1/8 inches 40" x 23 ¼" x 16 ½" inches 43 1/8" x 23 ¼" x 16 ½" inches 43 1/8 x 23 ¼ x 16 ½ inches*
Gas inlet / Gas outlet 2" / 2" NPT 2" / 2" NPT 2" / 2" NPT 2" / 2" NPT
All performance data is based on ambient conditions of 14.7 PSIA and 70°F, and has a tolerance of ± 10%.  
* values may vary slightly due to different motor versions

Accessories and Spare Parts

  • Gas-ballast valve
  • Various inlet filters
  • Energy recuperation kit with heat exchanger
  • Oil level switch
  • Temperature sensors
  • Filter pressure gauge
  • Vacuum pump oils for all applications
  • Vacuum regulation unit

Downloads

R 5 RA 0165 - 0305 D

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

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