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Transfer Gear Pumps BT,BTH Power consumption

Viscosity ν (mm
2 /s)reg. power inputP (kW)Viscosity ν (mm
2 /s)reg. power inputP (kW)Viscosity ν (mm
2 /s)reg. power inputP (kW)

Pump type

BT 0BT 1BT 2BT 3 BT 4BT 5BT 6 BT 7BTH 1/55BTH 1/105 BTH 2/100 BTH 2/130BTH 3/150

Power input required at high viscosities Viscosities above values specified in the table require a higherpower input. In such cases the power input of the pump P

1Pu

can be determinedby means of the viscosity factor f

ν

(see table page 10) as follows:

P

1Pu

= P

Tab 76

+ f

ν

· Q

Tab

Example:BT4 n = 200 1/min; ν = 10000 mm

2

/s; p = 8bar with P

tab 76

= 0.6 kW, table data at ν = 76 mm

2

/sf

ν

= 27 x 10

-3

kW min/l Q

Tab

= 32 l/mingives power inputP

1Pu

= 1.46 kW

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