Busch · R5 RA 0840 A ECOTORQUE

R5 RA 0840 A ECOTORQUE

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Oil-Lubricated Rotary VaneOEM data20 values carry a verification flag

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Ultimate pressure: 0.1 mbar
Motor power: 18.6 kW
Noise level: 80 dB(A)
Weight: 580 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 100 mbar	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 100 mbar	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	390 – 840 m³/h m³/h^R Needs review · excluded from comparison Source · 2026-10-01								390 – 840 m³/h m³/h^R Needs review · excluded from comparison Source · 2026-10-01								230 – 494 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 source Source · 2026-10-01								0.5 hPa (mbar) hPa (mbar) oem source Source · 2026-10-01								0.375 Torr Torr oem source Source · 2026-10-01
Nominal motor rating Motor power	18.5 kW kW oem source Source · 2026-10-01								18.5 kW kW oem source Source · 2026-10-01								25.0 hp hp oem source Source · 2026-10-01
Nominal motor speed Speed	700 – 1400 min⁻¹ min⁻¹^R Needs review · excluded from comparison Source · 2026-10-01								700 – 1400 min⁻¹ min⁻¹^R Needs review · excluded from comparison Source · 2026-10-01								700 – 1400 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 100 mbar Power consumption				8.4 kW kW oem source Source · 2026-10-01								17.6 kW kW oem source Source · 2026-10-01
Power consumption at ultimate pressure Power consumption					4.4 – 9.3 kW kW^R Needs review · excluded from comparison Source · 2026-10-01								4.4 – 9.3 kW kW^R Needs review · excluded from comparison Source · 2026-10-01								5.9 – 12.4 hp hp^R Needs review · excluded from comparison Source · 2026-10-01
Sound pressure level (ISO 2151), KpA = 3 dB Noise level						80 dB(A) dB(A) oem verified Source · 2026-10-01								80 dB(A) dB(A) oem verified Source · 2026-10-01								80 dB(A) dB(A) oem verified Source · 2026-10-01
Oil capacity	15 l l oem verified Source · 2026-10-01								15 l l oem verified Source · 2026-10-01								15.0 l l oem source Source · 2026-10-01
Weight approx. Weight							580 kg kg oem verified Source · 2026-10-01								580 kg kg oem verified Source · 2026-10-01								1279 Lbs. Lbs. oem verified Source · 2026-10-01
Dimensions (L x W x H) Dimensions								1680 x 865 x 724 mm mm oem source Source · 2026-10-01								1680 x 865 x 724 mm mm oem source Source · 2026-10-01								66.1 x 34.1 x 28.5 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
Power consumption at 75 Torr Power consumption																				11.3 - 23.6 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 0840 A ECOTORQUE, pulled apart

This model’s parts, by where they sit

Our drawing of the machine type, with the R5 RA 0840 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 0840 A ECOTORQUE International ENdatasheet · 2 pp
Product leaflet R5 RA 0840 A ECOTORQUE USdatasheet · 2 pp
Product leaflet R5 RA 0840 A ECOTORQUE USdatasheet · 2 pp
Instruction manual R5 RA RC 0400-0630 C-RA 0840 A ECOTORQUE ENmanual · 48 pp
Instruction manual R5 RA-RC 0400-0630 C - RA 0840 A ECOTORQUE ENmanual · 48 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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