26-02-2022, 08:10 PM
Terminology.....looking at the diagram on page 1, there is a swivel pin and a hub cap. Movement in the direction between swivel pin and hub cap is axial movement i.e. movement along the axis of the stub axle. At 90 degrees to axial movement is radial movement.
The inner race of the inner bearing is a tight push fit onto the stub and it sits against the inner shoulder of the stub. The outer race of the inner bearing is also a tight push fit in the felt carrier (I presume what you are calling the "plate" is the felt carrier...sometimes referred to as the inner hub).
Since the inner race is fixed against the stub axle shoulder and is tightly held in place it will have no axial movement on the stub. Since the outer race is held firmly in the felt carier it has no axial movement relative to the felt carrier (inner hub/plate). Therefore if there is axial movement of 1/16 inch that can only be due to clearance between the balls and the races in an axial direction...axial clearance. My thought is that 1/16 inch is excessive.
The assembly is - hub nut against outer bearing inner race -inner race against spacer -spacer against inner race of inner bearing - inner race of inner bearing against stub shoulder.
The inner bearing outer race sits against a shoulder in the felt carrier (inner hub/plate) and on the inner side of the outer race it presses against the felt seal plate which is dished so the inner race does not touch it; then comes the felt seal which sits against the inner lip of the felt carrier (inner hub/plate.)...the felt gets a bit squashed between the felt seal plate and the felt carrier (inner hub/plate).
If you look at the A7 Friends ARCHIVE section you will find LISTS OF SPARES for different years/models of 7 that can be downloaded and printed out. These spares lists can be useful for naming the parts being discussed so we are all talking about the same thing.
Hope this is of some help.
Dennis
The inner race of the inner bearing is a tight push fit onto the stub and it sits against the inner shoulder of the stub. The outer race of the inner bearing is also a tight push fit in the felt carrier (I presume what you are calling the "plate" is the felt carrier...sometimes referred to as the inner hub).
Since the inner race is fixed against the stub axle shoulder and is tightly held in place it will have no axial movement on the stub. Since the outer race is held firmly in the felt carier it has no axial movement relative to the felt carrier (inner hub/plate). Therefore if there is axial movement of 1/16 inch that can only be due to clearance between the balls and the races in an axial direction...axial clearance. My thought is that 1/16 inch is excessive.
The assembly is - hub nut against outer bearing inner race -inner race against spacer -spacer against inner race of inner bearing - inner race of inner bearing against stub shoulder.
The inner bearing outer race sits against a shoulder in the felt carrier (inner hub/plate) and on the inner side of the outer race it presses against the felt seal plate which is dished so the inner race does not touch it; then comes the felt seal which sits against the inner lip of the felt carrier (inner hub/plate.)...the felt gets a bit squashed between the felt seal plate and the felt carrier (inner hub/plate).
If you look at the A7 Friends ARCHIVE section you will find LISTS OF SPARES for different years/models of 7 that can be downloaded and printed out. These spares lists can be useful for naming the parts being discussed so we are all talking about the same thing.
Hope this is of some help.
Dennis