Art. 17020

we give them to you. We can replace the motor drives in bronze or in ergal to be fixed to the axle
of the wheels, with one in ergal, independent from the axle.

What does it mean?

With the normal MB SLOT system, the crown and the drive are fastened  by two nuts on the axle
of the wheels, with Art. 17020. The crown to drive the motion to the wheels is fixed to the axle,
whilst the motor drive is mounted on two ball bearings, free to rotate independently from the axle
of the wheels and kept in position on one side by a crown itself, on the other by a stopper and nut.

The great advantage? The frictions of the motor shaft against the drive will be eliminated when
the motor shaft gets in contact with the drive, because this can move freely on the ball bearings.

For  the use of this system with pinions of a diameter smaller than 6.50mm it is necessary to
replace the ball bearing contained in pack Art.17020, with two lower as in pack Art. 07020