Southbend SB1023 Manuel D’Utilisation

For Machines Mfg. Since 8/09

Model SB1023

-27-

4.  Without letting any of the dogs or the lock 

balls they contain fall out of the hub, use 

a 2.5mm hex wrench to loosen the dogs 

and position them at the 0°, 120°, and 240° 

degree locations as indicated by the degree 

scale on the hub (Figure 34).

Note: Pay special attention to keep the dogs 

engaged in the hub slot when they are loose. 

If you lose any of the 4mm lock balls, it will 

be impossible to continue this procedure 

until they are replaced.

5.  Using a slightly-oiled lint free cloth, wipe the 

mating surfaces of the balancing arbor and 

the internal hub taper perfectly clean, and 

push the hub and arbor together, as shown 

in Figure 35.

6.  Place the balancing arbor onto the wheel 

balancing fixture (Figure 33).

7.  Spin the wheel so it rotates one full turn and 

comes to rest with the heaviest side hanging 

down at six o'clock. This may take a few 

times to find the exact location.

8.  Using a pencil, draw a line at the six o'clock 

position to mark the heaviest side of the 

wheel.

9.  Line up the closest dog with the line you 

just drew and lock it in place. This dog will 

now be positioned at the heaviest side of the 

wheel and will be called dog "A".

10.  Using the scale, position the other two "B" 

dogs so they are both evenly spaced 120° 

degrees apart from dog "A". At this point all 

dogs will be 120° apart from one another. 

The "B" dogs are the two dogs you will move 

to balance the wheel.

11.  Rotate the wheel 90° degrees, let go, and 

observe the direction that it rotates out of 

balance. Move each "B" dog in one degree 

increments, toward each other and away 

from dog "A" to balance the wheel. For 

example, depending on the amount of 

balance correction, the distance between 

the two "B" dogs will decrease, and the 

distance between the "B" dogs and "A" dog 

will increase. This step must be repeated 

as many times as required until the wheel 

will not rock back and forth by itself in any 

position.

12.  When you are satisfied with the wheel 

balance, install the grinding wheel on the 

machine, and run it for five minutes to verify 

the wheel is in balance.

13.  If any balance problems are detected, repeat 

the balancing procedure. 

Note: Some machinists will re-dress the grinding 

wheel one last time at this point to ensure 

ultra-high grinding precision.