Southbend SB1029 owner manual Wheel Balancing, To balance the grinding wheel

For Machines Mfg. Since 8/09 O P E R A T I O N Model SB1029

Wheel Balancing

Static wheel balancing can be difficult and very time consuming without practice. For accurate grinding results, wheel balancing is mandatory. For this balancing procedure, you will need a wheel balancing fixture. The wheel balancing fixture shown in Figure 39 is one example of the many varieties available on the market.

Before proceeding, the grinding wheel must be ring tested (refer to Page 23) and dressed (refer to Page 28).

Figure 39. Wheel on balancing fixture.

If flood coolant was used with the grinding wheel, run the machine with the grinding wheel installed for 5-minutes to sling off any residual coolant that may have settled to the low side of the wheel. If the paper washers are missing, wet, or damaged, replace them before proceeding. If, during a period of machine operation, you find that a finish is becoming poor, redress the wheel. If that does not correct the problem, rebalance your grinding wheel.

To balance the grinding wheel:

1.DISCONNECT MACHINE FROM POWER!

2.Set up the wheel balancer as outlined in its product user manual.

3.Remove the grinding wheel and hub as a unit from the spindle as outlined in

Removing & Installing Grinding Wheel Hub on Page 26.

4.Without letting any of the balance dogs or lock balls 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 indicated by the degree scale on the hub (see Figure 40).

Lock Ball Inside Balance Dog

Degree Scale

Dog Slot

Hub

Paper Washer

Figure 40. Grinding wheel hub.

Note: Pay special attention to keep the dogs engaged in the hub slot when they are loose. If you lose any of the 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, then push them together, as shown in Figure 41.

Figure 41. Installing the balancing arbor.

6.Place the balancing arbor onto the wheel balancing fixture (Figure 39).

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