Busch · R5 RA 0165–0305 D ECOTORQUE

R5 RA 0255 D ECOTORQUE

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Oil-Lubricated Rotary VaneOEM data13 values carry a verification flag

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Ultimate pressure: 0.1 mbar
Noise level: 74 dB(A)
Weight: 220 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; at full speed (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; at full speed (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 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	200 – 300 m³/h m³/h^R Needs review · excluded from comparison Source · 2026-10-01							200 – 300 m³/h m³/h^R Needs review · excluded from comparison Source · 2026-10-01							117.7 – 176.6 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 source Source · 2026-10-01							0.1 hPa (mbar) hPa (mbar) oem source Source · 2026-10-01							0.075 Torr Torr oem source 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 speed Speed	1200 – 1800 min⁻¹ min⁻¹^R Needs review · excluded from comparison Source · 2026-10-01							1200 – 1800 min⁻¹ min⁻¹^R Needs review · excluded from comparison Source · 2026-10-01							1200 – 1800 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				3.3 – 4.8 kW kW^R Needs review · excluded from comparison Source · 2026-10-01							3.3 – 4.8 kW kW^R Needs review · excluded from comparison Source · 2026-10-01							4.4 – 6.4 hp hp^R Needs review · excluded from comparison Source · 2026-10-01
Sound pressure level at full speed (ISO 2151), KpA = 3 dB Noise level					74 dB(A) dB(A) oem source Source · 2026-10-01							74 dB(A) dB(A) oem source Source · 2026-10-01
Oil capacity	6.5 l l oem verified Source · 2026-10-01							6.5 l l oem verified Source · 2026-10-01							6.5 l l oem verified Source · 2026-10-01
Weight approx. Weight						220 kg kg oem verified Source · 2026-10-01							220 kg kg oem verified Source · 2026-10-01							484 Lbs. Lbs. oem verified Source · 2026-10-01
Dimensions (L x W x H) Dimensions							1096 x 792 x 585 mm mm oem source Source · 2026-10-01							1096 x 792 x 585 mm mm oem source Source · 2026-10-01							43.1 x 31.2 x 23.0 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							G 2" oem source Source · 2026-10-01
Gas outlet Outlet connection	G 2" oem source Source · 2026-10-01							G 2" oem source Source · 2026-10-01							G 2" oem source Source · 2026-10-01
Sound pressure level (ISO 2151), KpA = 3 dB Noise level																			74 dB(A) dB(A) oem source 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

Same family: R5 RA 0165 D ECOTORQUE, R5 RA 0205 D ECOTORQUE, R5 RA 0305 D ECOTORQUE

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R5 RA 0255 D ECOTORQUE, pulled apart

This model’s parts, by where they sit

Our drawing of the machine type, with the R5 RA 0255 D 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.