U 4.300

Becker U 4.300 – outdated model

Becker no longer lists the U 4.300 in its current range: its documents are in the archive of the Becker download centre, and the Becker product range catalogue 01/2026 lists only the U 4.400 and the U 4.630 in the U 4 series. Becker names no successor. In the Ehrler & Beck range, the Becker U 5.301 is the nearest in size, with 300 m³/h at 50 Hz and an ultimate pressure of 0.1 mbar.

Technical data

According to the Becker data sheet of 31.03.2017, the U 4.300 delivers 300 m³/h at 50 Hz and 360 m³/h at 60 Hz (tolerance ±10 %); the ultimate pressure is below 0.5 mbar absolute. For continuous operation, Becker gives the range up to 100 mbar with the 5.5 / 6.6 kW motor and up to 400 mbar with the 7.5 / 9.0 kW motor (each at 50 / 60 Hz, efficiency class IE3). Sound pressure level 74 / 76 dB(A) at 50 / 60 Hz. The pump weighs 93.5 kg without motor; the motor weighs 51, 55 or 68 kg depending on the version. Overall length with motor 1074.5, 1114.5 or 1078 mm, width 533 mm, height 358 mm (388.5 mm to the top of the eyebolt). Suction connection 2", exhaust connection 1 1/2"; oil filling 7 l (Becker Lube M 100, S 100 or SL 100). A non-return valve and a PT100 temperature sensor are built in.

Order numbers

Becker assigned a separate order number to each combination of version and motor (pump with motor):

Versions

Becker listed the U 4.300 with gas ballast valve, with oil-water cooler, with oil bath heater, level sensor and thermostat, and with inlet filter. For pumps in service, Ehrler & Beck supports you with service and with the selection of a current model.

Pumping speed 50Hz	300
Pumping speed 60Hz	360
Ultimate pressure	0.5
Rated motor power 50Hz	7.5
Rated motor power 60Hz	9
Motor efficiency class	IE3
Length	111.45
Width	53.3
Height	38.85
Inlet connection flange	2"
Outlet connection flange	1 1/2"
Noise level	74 dB(A)
Cooling method	Air cooling