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Vac & Air/Becker/Catalogue

Becker · U 5.71

U 5.71

Data coverage & sourcesCompare this modelAsk about this model
Oil-Lubricated Rotary VaneOEM data
Becker U 5.71

Image: Becker

Pumping speed
83.3 m³/h
Max. vacuum
0.1 mbar
Motor power
1.79 kW
Noise level
67 dB(A)

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

Technical data

Source: Becker product page · retrieved 2026-10-01
As publishedUS; SCFMUSUS; dB(A)US; without Motor
Open Flow SCFM
Pumping speed
49 SCFM
oem source
Source · 2026-10-01
Maximum Vacuum
Max. vacuum
0.075 Torr Torr
oem source
Source · 2026-10-01
Horsepower
Motor power
2.4 hp
oem source
Source · 2026-10-01
Noise Level dB(A)
Noise level
67 dB(A)
oem source
Source · 2026-10-01
Weight without Motor
Weight
133 lbs lbs
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.

Explore the parts

U 5.71, pulled apart

Motor1Coupling2Shaft seal3Cylinder / housing4Rotor and shaft5Gaskets and O-rings6Exhaust box / oil reservoir7Oil8Gas ballast and relief valves9Inlet non-return valve10Screws, washers, pins11

This model’s parts, by where they sit

Our drawing of the machine type, with the U 5.71's own parts from Becker'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

Documents open on the manufacturer’s site.

Service parts · 71

Kit4
Seals and gaskets3
Rotating parts4
Lubrication2
Fittings and hardware20
Housing and covers8
Valves7
Motor and drive1
Controls and instruments1
Cooling1
Other parts20

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

Compare with another model

Parts diagrams

Exploded views from Becker’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.

Exploded view · Download Spare Parts List (U 5.71), page 376 positions · own page

Click a part or its number. Drag to move, pinch or Ctrl + scroll to zoom. Arrows step through positions in the manufacturer's numbering (not an assembly sequence). The manufacturer's drawing shows the parts already pulled apart and gives no assembled positions; Vac & Air does not invent them. Positions were placed automatically from the manufacturer's numbering.

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
00010254100PUMP BODY
02000154100ROTOR
50080154100SIDE SHIELD COMPLETELY, DRIVE SIDE
K4REPAIR KIT
Supplied in kit K4
50070054100SIDE SHIELD COMPLETELY
94874200000STRAIGHT PIN 186 947508 00000 WASHER
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
03390054200VALVE PLATE 460 012205 54200 GAS BALLAST PIPING
02910154200VALVE KEEPER
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
94780700000KEY
74132400000BUMPER
53750354200SUCTION VALVE UNIT
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
91102000000AIR SUPPLY DUCT
01220954201TOLERANCE SLEEVE
00240454200OIL TANK 551 741310 60000 BUMPER
00170054200OIL TANK CAP 700 K3, K4 OIL SIGHT GLASS WITH GASKET
06480054200ADAPTER 705 K3, K4 SCREW PLUG
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
03410399628ANCHORING SCREW 715 034900 54200 DIVERTER
95018400000CLAMPING DISC
03070054100THROTTLE DISC
92150050000HANDLE
K4REPAIR KIT
Supplied in kit K4
K4REPAIR KIT
Supplied in kit K4
00250054200SERVICE COVER 809 K5 HEX HEAD SCREW - M8X35
00250254200SERVICE COVER (VARIANT
00250154200SERVICE COVER (VARIANT
03410199559PIVOT PIN
00330454200NOZZLE
56780301559FLOAT COMPLETELY
00370054200MAINTENANCE COVER (STANDARD)
50370054200MAINTENANCE COVER (WITH BLOW-OFF CONNECTION AND VALVE)
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
51221154200PIPE
51220354100PIPE
94840200000HOHLSCHRAUBE / HOLLOW SCREW / VIS CREUSE / VITE ESAGONALE / TORNILLO HUECO
93635300000STRAIGHT FITTING
05320154200CONNECTION FLANGE
94762801000straight pin
50230154200COUPLING WITH FAN
01680154200TIGHTENING DISC
90180900000SHAFT END BOLD
01490054100MOTOR FLANGE
96020354200COOLER
51220254100PIPE
01220654200SUCTION PIPE
00940019000HOLLOW HOLDING SCREW
76875699626GAS BALLAST COMPLETELY - STANDARD
76875499626GAS BALLAST COMPLETELY - OPTIONAL
54840054100HOLLOW SCREW WITH NOZZLE - STANDARD
54840100000HOLLOW SCREW WITHOUT NOZZLE - OPTIONAL
01831154200HOOD
02080054200AIR GUIDE HOOD
06710054200LID - SUCTION VALVE
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5
74131060000Rubber buffer
94880200000EYE BOLT - M10
95120300000SCREW PLUG
74342104000THERMOSTAT - OPTIONAL
94803300000COPPER SEALING RING
52160199400BALL VALVE (WITH HOSE CONNECTION 19MM)
91680199691MAINTENANCE INDICATOR - OPTIONAL
03490054200DIVERTER
95122100100VERSCHLUSS-SCHRAUBE / LOCKING SCREW / BOUCHON / VITE DI CHIUSURA / TORNILLO DE CIERRE
74110799682LEVEL TRANSMITTER - OPTIONAL
54340300000TEMPERATURE SENSOR / MOUNTING KIT - OPTIONAL
90210054200COUPLING (MOT)
K5SCREW KIT 5) 323 016801 54200 TIGHTENING DISC
Supplied in kit K5

Positions and part numbers as printed in Becker’s Download Spare Parts List (U 5.71), page 3 · view the source document