Southbend SB owner manual Dead Centers, O P E R A T I O N

	O P E R A T I O N
For Machines Mfg. Since 5/11		13" Heavy 13® Gearhead Lathe

Note: If necessary in the following step, refer to Offsetting Tailstock on Page 39 for detailed instructions.

8.Use calipers to measure both ends of the workpiece.

—If the test stock is thicker at the tailstock end, move the tailstock toward the front of the lathe 1⁄2 the distance of the amount of taper (see Figure 46).

Move the tailstock toward

the front of the lathe ½ the

distance of the taper.

Looking down from above.

Figure 46. Adjust tailstock toward the operator.

—If the test stock is thinner at the tailstock end, move the tailstock toward the back of the lathe 1⁄2 the distance of the amount of taper (see Figure 47).

Looking down from above.

Move tailstock toward the

back of the lathe ½ the distance of the taper.

Figure 47. Adjust tailstock away from the operator.

9.Repeat Steps 6–8until the desired accuracy is achieved.

Centers

Figure 48 shows the MT#5 dead centers included with the lathe. In addition, an MT#7– MT#5 tapered spindle sleeve is included for mounting centers in the spindle.

Dead

Center

Carbide Tipped

Dead Center

Adapter

Sleeve

Figure 48. Adapter sleeve and dead centers.

Dead Centers

A dead center is a one-piece center that does not rotate with the workpiece and is used to support long, slender workpieces

Use the dead center in the spindle for operations where the workpiece rotates with the center and does not generate friction.

The carbide-tipped dead center can better withstand the effects of friction and is best used in the tailstock where the workpiece will rotate against it. The tip of the center must be generously lubricated during the operation to avoid premature wear and maximize smooth operation. Using low spindle speeds will also reduce the heat and wear from friction.

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