Lambretta Rear Hub Bearing
Special rear wheel bearing from BGM PRO for the Lambretta engines of the series 1 to 3.
The special bearing, manufactured only for the Lambretta, has an integrated shaft seal.
The BGM bearing does not require the shaft seal ring to be mounted, the high-quality sealing ring (NBR) is already mounted.
The bearing clearance is adapted to the mounting characteristics of the Lambretta engines. It is still sufficiently large in the completely assembled condition without the bearing running too tight. The high-quality sealing in combination with the exact tolerance of the bearing clearance create the solid basis for a very long service life.
To mount the bearing, heat the motor housing (hot air gun) and cool the bearing (ice compartment or ice spray). As soon as the bearing is mounted and has warmed up due to the hot motor housing, the main shaft can be inserted. The slightly warmed inner ring of the bearing also makes it easier to install a main shaft from Casa Lambretta that is much tighter than the original one.
When subsequently mounting the bearing shield, the permissible torque must be observed.
Due to the design, the slim M6 stud bolts incline outwards if the tightening torque is too high and can thus damage the motor housing.
As a guide value for the four stud bolts, 4.7 - 5.2Nm are given.