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Busch · R5 RA 0155 A

R5 RA 0155 A

Oil-Lubricated Rotary VaneOEM data24 values carry a verification flag
Busch R5 RA 0155 A

Image: Busch

Pumping speed
175 m³/h
Ultimate pressure
0.1 mbar
Motor power
3.73 kW
Noise level
72 dB(A)

Headline ratings converted to common units for comparison; the table below shows each figure exactly as published.

Technical data

Source: Busch product page · retrieved 2026-10-01
As publishedISO 50 HzISO 50 Hz; (Gas-ballast valve closed)ISO 50 Hz; (Gas-ballast valve open)ISO 50 Hz; at 100 mbarISO 50 Hz; at ultimate pressureISO 50 Hz; (ISO 2151), KpA = 3 dBISO 50 Hz; approx.ISO 50 Hz; (L x W x H)ISO 60 HzISO 60 Hz; (Gas-ballast valve closed)ISO 60 Hz; (Gas-ballast valve open)ISO 60 Hz; at 100 mbarISO 60 Hz; at ultimate pressureISO 60 Hz; (ISO 2151), KpA = 3 dBISO 60 Hz; approx.ISO 60 Hz; (L x W x H)US 60 HzUS 60 Hz; at 75 TorrUS 60 Hz; at ultimate pressureUS 60 Hz; (ISO 2151), KpA = 3 dBUS 60 Hz; approx.US 60 Hz; (L x W x H)
Nominal pumping speed
Pumping speed
150 m³/h m³/h
oem source
Source · 2026-10-01
175 m³/h m³/h
oem verified
Source · 2026-10-01
103 ACFM ACFM
oem verified
Source · 2026-10-01
Ultimate pressure (Gas-ballast valve closed)
Ultimate pressure
0.5 hPa (mbar) hPa (mbar)
oem source
Source · 2026-10-01
0.1 hPa (mbar) hPa (mbar)
oem verified
Source · 2026-10-01
Ultimate pressure (Gas-ballast valve open)
Ultimate pressure
1.5 hPa (mbar) hPa (mbar)
oem verified
Source · 2026-10-01
1.5 hPa (mbar) hPa (mbar)
oem verified
Source · 2026-10-01
Nominal motor rating
Motor power
4.0 kW kW
oem source
Source · 2026-10-01
4.2 kW kW
oem verified
Source · 2026-10-01
5 hp hp
oem verified
Source · 2026-10-01
Nominal motor speed
Speed
1500 min⁻¹ min⁻¹
oem source
Source · 2026-10-01
1800 min⁻¹ min⁻¹
oem verified
Source · 2026-10-01
1800 rpm rpm
oem verified
Source · 2026-10-01
Power consumption at 100 mbar
Power consumption
3.2 kW kW
oem source
Source · 2026-10-01
3.8 kW kW
oem verified
Source · 2026-10-01
Power consumption at ultimate pressure
Power consumption
2.1 kW kW
oem source
Source · 2026-10-01
2.5 kW kW
oem verified
Source · 2026-10-01
3.3 hp hp
oem verified
Source · 2026-10-01
Sound pressure level (ISO 2151), KpA = 3 dB
Noise level
70 dB(A) dB(A)
oem source
Source · 2026-10-01
72 dB(A) dB(A)
oem verified
Source · 2026-10-01
72 dB(A) dB(A)
oem verified
Source · 2026-10-01
Oil capacity
3.5 l l
oem verified
Source · 2026-10-01
3.5 l l
oem verified
Source · 2026-10-01
3.5 l l
oem verified
Source · 2026-10-01
Weight approx.
Weight
110 kg kg
oem verified
Source · 2026-10-01
110 kg kg
oem verified
Source · 2026-10-01
243 Lbs. Lbs.
oem verified
Source · 2026-10-01
Dimensions (L x W x H)
Dimensions
765 x 470 x 340 mm mm
oem source
Source · 2026-10-01
765 x 470 x 340 mm mm
oem source
Source · 2026-10-01
32 x 18.5 x 13.4 inches inches
oem source
Source · 2026-10-01
Gas inlet
Inlet connection
G 2"
oem source
Source · 2026-10-01
G 2"
oem source
Source · 2026-10-01
2" NPT " NPT
oem verified
Source · 2026-10-01
Gas outlet
Outlet connection
G 2"
oem source
Source · 2026-10-01
G 2"
oem source
Source · 2026-10-01
2" NPT " NPT
oem verified
Source · 2026-10-01
Ultimate pressure
0.075 Torr Torr
oem verified
Source · 2026-10-01
Power consumption at 75 Torr
Power consumption
4 hp hp
oem verified
Source · 2026-10-01

Original extracted values are shown with their source and review status. Multiple values under the same condition remain separate for review.

Explore the parts

R5 RA 0155 A, pulled apart

Gaskets and O-rings1Exhaust filters2Oil3Screws, washers, pins4

This model’s parts, by where they sit

Our drawing of the machine type, with the R5 RA 0155 A's own parts from Busch's lists. Side view along the shaft. Oil-free (dry) pumps have no exhaust box oil, sight glass or oil filter; their exhaust filter is a dust filter.

Reviewed operating performance · 60 Hz

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Parts diagrams

Exploded views from Busch’s own documents, with each position and part number as printed. Select a part to see what it fits, who sells it and what replaces it.

Illustration showing parts that may be involved during troubleshooting: · Instruction manual R5 RA 0155 A EN, page 293 positions

The positions on this drawing haven’t been placed yet: choose a position in the list for its part. Drag to move, pinch or Ctrl + scroll to zoom.

Select a part on the drawing or in the list to see its number, what it fits and where to get it. Turn on “select several” to build one quote for many parts.

Pos.Part numberDescriptionQty
–Coupling
–Exhaust filter
–Gas ballast valve

Positions and part numbers as printed in Busch’s Instruction manual R5 RA 0155 A EN, page 29 · view the source document