Grease Lubricated Gland

The grease lubricated gland is a main support bearing for the propeller shaft and is used in installations where a bearing is required on the inboard end of the sterntube. This gland can also be used as a shaft log where it acts as an intermediate bearing between the shaft strut and the gearbox, forming a watertight seal at the point where the shaft enters the hull.

The gland body is lubricated by means of a screwdown greaser injecting grease into greaseways machined into the bearing surface of the gland.

As this type of gland utilizes replaceable packing it should be installed in the boat with sufficient clearance between the gland studs and the gearbox coupling to permit the replacement of the packing without uncoupling the shaft.

In installation the gland should be tightened equally on the studs to ensure it does not bear on the shaft. The gland should not be overtightened as this will cause overheating and will wear the shaft in way of the packing and destroy the sealing area.