Busch · R5 RA 0520 A ECOTORQUE

R5 RA 0520 A ECOTORQUE

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Oil-Lubricated Rotary VaneOEM data23 values carry a verification flag

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Ultimate pressure: 0.1 mbar
Motor power: 11 kW
Weight: 389 kg

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 published	ISO 50 Hz	ISO 50 Hz; (Gas-ballast valve closed)	ISO 50 Hz; (Gas-ballast valve open)	ISO 50 Hz; at ultimate pressure	ISO 50 Hz; (ISO 2151), KpA = 3 dB	ISO 50 Hz; approx.	ISO 50 Hz; (L x W x H)	ISO 60 Hz	ISO 60 Hz; (Gas-ballast valve closed)	ISO 60 Hz; (Gas-ballast valve open)	ISO 60 Hz; at ultimate pressure	ISO 60 Hz; (ISO 2151), KpA = 3 dB	ISO 60 Hz; approx.	ISO 60 Hz; (L x W x H)	US 60 Hz	US 60 Hz; (Gas-ballast valve closed)	US 60 Hz; (Gas-ballast valve open)	US 60 Hz; at 75 Torr	US 60 Hz; at ultimate pressure	US 60 Hz; (ISO 2151), KpA = 3 dB	US 60 Hz; approx.	US 60 Hz; (L x W x H)
Nominal pumping speed Pumping speed	330 – 520 m³/h m³/h^R Needs review · excluded from comparison Source · 2026-10-01							330 – 520 m³/h m³/h^R Needs review · excluded from comparison Source · 2026-10-01							153.0–306.0 ACFM ACFM^R Needs review · excluded from comparison Source · 2026-10-01
Ultimate pressure (Gas-ballast valve closed) Ultimate pressure		0.1 hPa (mbar) hPa (mbar) oem verified Source · 2026-10-01							0.1 hPa (mbar) hPa (mbar) oem verified Source · 2026-10-01							0.075 Torr Torr oem verified Source · 2026-10-01
Ultimate pressure (Gas-ballast valve open) Ultimate pressure			0.5 hPa (mbar) hPa (mbar) oem verified Source · 2026-10-01							0.5 hPa (mbar) hPa (mbar) oem verified Source · 2026-10-01							0.375 Torr Torr oem source Source · 2026-10-01
Nominal motor speed Speed	800 – 1200 min⁻¹ min⁻¹^R Needs review · excluded from comparison Source · 2026-10-01							800 – 1200 min⁻¹ min⁻¹^R Needs review · excluded from comparison Source · 2026-10-01							800 – 1200 rpm rpm^R Needs review · excluded from comparison Source · 2026-10-01
Ambient temperature	5 ... 40 °C °C oem source Source · 2026-10-01							5 ... 40 °C °C oem source Source · 2026-10-01
Power consumption at ultimate pressure Power consumption				2.6 – 3.9 kW kW^R Needs review · excluded from comparison Source · 2026-10-01							2.6 – 3.9 kW kW^R Needs review · excluded from comparison Source · 2026-10-01								3.8–8.0 hp hp^R Needs review · excluded from comparison Source · 2026-10-01
Sound pressure level (ISO 2151), KpA = 3 dB Noise level					67 – 76 dB(A) dB(A)^R Needs review · excluded from comparison Source · 2026-10-01							67 – 76 dB(A) dB(A)^R Needs review · excluded from comparison Source · 2026-10-01								67 - 76 dB(A) dB(A)^R Needs review · excluded from comparison Source · 2026-10-01
Oil capacity	11 l l oem verified Source · 2026-10-01							11 l l oem verified Source · 2026-10-01							11 l l oem verified Source · 2026-10-01
Weight approx. Weight						441 kg kg oem verified Source · 2026-10-01							441 kg kg oem verified Source · 2026-10-01								858 Lbs. Lbs. oem verified Source · 2026-10-01
Dimensions (L x W x H) Dimensions							1253 x 718 x 626 mm mm oem source Source · 2026-10-01							1253 x 718 x 626 mm mm oem source Source · 2026-10-01								49.3 x 28.9 x 22.4 inches inches oem source Source · 2026-10-01
Gas inlet Inlet connection	G 3" oem source Source · 2026-10-01							G 3" oem source Source · 2026-10-01							G 3" oem source Source · 2026-10-01
Gas outlet Outlet connection	G 3" oem source Source · 2026-10-01							G 3" oem source Source · 2026-10-01							G 3" oem source Source · 2026-10-01
Nominal motor rating Motor power															14.8 hp hp oem source Source · 2026-10-01
Power consumption at 75 Torr Power consumption																		10.1–12.1 hp hp^R Needs review · excluded from comparison 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.

^R a min–max range as published, not a single rating

Explore the parts

R5 RA 0520 A ECOTORQUE, pulled apart

This model’s parts, by where they sit

Our drawing of the machine type, with the R5 RA 0520 A ECOTORQUE'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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Documents

Product leaflet R5 RA 0520 A ECOTORQUE International ENdatasheet · 2 pp
Product leaflet R5 RA 0520 A ECOTORQUE International ENdatasheet · 2 pp
Product leaflet R5 RA 0520 A ECOTORQUE USdatasheet · 2 pp
Product leaflet R5 RA 0520 A ECOTORQUE USdatasheet · 2 pp
Instruction manual R5 RA 0520-0600 A ENmanual · 48 pp
Instruction manual R5 RA 0520-0600 A ENmanual · 44 pp
Pumping speed curveISO
Pumping speed curveIMP
Dimensional drawingISO

Documents open on the manufacturer’s site.

Service parts · 18

Part numbers from Busch’s parts lists, shop and instruction manuals. Open a part for its other models, replacements and suppliers.

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