NORD EXPANSION CHAMBER, COMPLETE KIT:  NORD P/N# 28390390

Description

NORD EXPANSION CHAMBER, COMPLETE KIT: NORD P/N# 28390390.
Gear units with the motor or input shaft mounted vertically upright must be fi lled almost completely with oil in order to properly supply the 1st stage gearing with oil. Certain operating conditions and higher gear peripheral speeds can result in increased oil churning or splashing losses and heating of the air space located above the oil.
For these conditions an oil expansion chamber or oil overfl
ow chamber is often recommended. At rest, the
gear unit is filled to its normal fi ll-level position and there should be no oil in the expansion chamber.
During operation, the oil expansion chamber provides a safe overfl ow area for the expanded oil-air mixture, thus eliminating excessive pressure build-up, minimizing the formation of foam, and preventing
oil-loss through the breather, oil seals, gaskets, etc.
As heat is released from the expanded air-oil mixture contained within the overflow chamber, gravity allows the oil to be returned to the primary gear sump supply, eliminating a critical loss in oil level.
Nord strongly recommends the use of an oil expansion chamber when the motor is mounted vertical-up, when the reducer mounting position is M4 or when it meets any of the criteria listed below. Any application required to operate above 1800 rpm synchronous motor speeds should also be reviewed to be certain that the reducer thermal limits are observed