Drive Cooling Loop Specifications

Inhibited ethylene glycol or propylene glycol must contain a corrosion inhibitor compatible with the cooling loop material. Recommended drive loop coolants, see are listed in this table.
Coolant Requirements for One Drive
Drive Frame Size
Coolant Temperature Range
Minimum Coolant Flow Rate
Maximum Coolant Flow Rate
Pressure Drop From Drive Inlet to Drive Outlet at Minimum Coolant Flow Rate
Coolant Type
6L
0…50 °C (32…122 °F)
30.3 LPM (8 gpm)
45.4 LPM (12 gpm)
1.58 bar (23 psi)
WEG50 or WPG50
7L
0…40 °C (32…104 °F)
30.3 LPM (8 gpm)
45.4 LPM (12 gpm)
0.35 bar (5 psi)
WEG50 or WPG50
Frame 7L liquid cooled drives are available as an IP00 Open Type kits solution only.
Each frame 6L hose kit contains two hoses and the appropriate connectors.
WEG50 equals good quality or distilled water with approved inhibited* ethylene glycol, 50% glycol by volume.
WPG50 equals good quality or distilled water with approved inhibited* propylene glycol, 50% glycol by volume.
This table lists the estimated amount of coolant that is needed for one drive cooling loop for the drive frame size listed.
Estimated Coolant Volume for the Drive Cooling Loop
Drive Frame Size
Estimated Amount of Coolant
6L
15.1 L (4 gal)
7L
19.0 L (5 gal)
Frame 7L liquid cooled drives are available as an IP00 Open Type kits solution only.
For frame 6L drives, the estimated amount of coolant is based on the heat exchanger that uses 1.2 m (4 ft) hoses. Longer hoses require more coolant. The maximum hose length of 9.1 m (30 ft) requires up to an additional 2.8 L (3/4 gal).
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