Used Vacuum Pumps›Busch›R5 RA / RB
Busch · R5 RA / RB
Busch R5 RB0021 — rotary vane, 21 m³/h
Original title: Busch R5 RB0021 C 3Z5 Vacuum Pump UR
📍 Germany
🟢 Good fit
Excellent match for FD260/FD440; well-priced for the family.
Condition from photo
Externally clean, no visible oil leaks, labels intact, mounted on frame with motor.
Likely refurb / add-ons
- Oil change (Busch VM 032, 0.45 L) — €30
- Exhaust filter replacement — €80
- Soft-starter (optional) — €280
WAVE AI estimate from photo + specs only — not a substitute for our physical pre-purchase check.
Specifications
- Type
- Oil-sealed rotary vane
- Pumping speed
- ~21 m³/h
- Water-vapour tolerance
- ~110 g/h
- Ultimate vacuum
- ≤ 0.1 mbar
- Year
- 2020 (per nameplate)
- Source
- eBay
- Listing #
- eBay #125723481095
- Last verified
- Jul 26, 2026
Fits WAVE machines: FD260, FD440
Price history— Busch R5 RA / RB
Median €2.785 · 638 observations · €1–€45.105
Recent sales (Busch R5 RA / RB)
- €4.836May 19, 2026Busch RA 0063 F 503 Oil Lubricated VACUUM PUMP 0,1hPa(mbar) RA0063F DHL/Fedex
- €1.060Jan 21, 2026BUSCH R5 RA 0010 C Vacuum Pump Salvage from a closed factory
Source: eBay sold listings (Apify aggregation). Year inferred from listing title when present.
Type plate (AI reading)
- Exact model
- Busch R5 RB0021 C 3Z5
- Serial
- DEM120380233
- Year (plate)
- 2020
- Model
- RB 0021 C 3Z5
- Absolute pressure
- 1.0 hPa (mbar)
- Maximum speed
- 3600 min⁻¹
- Maximum volume flow
- 24 m³/h
- Mass
- 20 kg
- Oil type
- Busch VM 032
- Oil quantity
- 0.45 L
- Manufacturer
- Busch Produktions GmbH, Schauinslandstrasse 1, D-79689 Maulb
- Origin
- Made in Germany
- Year
- 2020
- Approvals
- CE, IEC
Auto-extracted from one of the listing photos. Verify on the real unit before purchase.
What to look for on this family
Oil-sealed rotary vane with gas-ballast. Robust workhorse. Check ballast valve is intact and oil is clear amber. Run gas-ballast open under water vapour load.
Manufacturer datasheet — Busch R5 RA / RB
- Bauart
- Einstufige ölgedichtete Drehschieberpumpe mit Gasballast
- Saugvermögen (50 Hz)
- 10 – 100 m³/h (RA 0010 – RA 0100)
- Enddruck
- ≤ 0.1 mbar
- Wasserdampfverträglichkeit
- ca. 50 – 330 g/h
- Saugstutzen
- DN 25/40 ISO-KF
- Motorleistung
- 0.55 – 3.0 kW
- Drehzahl (50 Hz)
- 1500 1/min
- Ölsorte
- Busch VM 100 (mineralisch)
- Ölfüllung
- 0.5 – 4.0 l
- Ölwechsel-Intervall
- ca. 500 – 2000 Bh, je nach Anwendung
- Schutzart Motor
- IP55
- Hersteller
- Busch Vacuum Solutions
Curated from the manufacturer's official datasheet for this family / model. The specific pump may vary slightly by variant.