Southbend SB1001 owner manual Setting Power Feed Rate of 0.0041/rev

For Machines Mfg. Since 8/11 O P E R A T I O N Model SB1001 8K™ Lathe

Setting Power Feed Rate

Working at the lathe, follow along with the example below to better understand how to set up the lathe for the desired power feed rate.

Tools Needed	Qty
Wrench 13mm	.......................................................2

Setting Power Feed Rate of 0.0041"/rev.:

1.DISCONNECT LATHE FROM POWER!

2.Open the end cover.

3.Loosen the pulley shaft hex nuts and tensioning thumb screw shown in Figure 54.

Tensioning Thumb Screw

Shaft

Hex Nuts

Figure 54. End pulley shaft hex nuts and tensioning

thumb screw.

4.Position the pulley shafts so that the timing belts are loose.

6.Arrange the timing belts and pulleys as indicated in the illustration above the feed rate chart (see Figures 56–57) and the pulley identification column in the chart.

48 120

16 B

C 48 140

48 120

Figure 56. Feed rate pulley and timing belt

configuration.

12048T

Belt

B-15T

16T

120 Belt

140

Belt

C-20T

48T

								Figure 57. Feed rate pulley and timing belt
5. Locate the column in the feed rate chart for a								identification.
feed rate of 0.0041"/rev. (see Figure 55).								a. Make sure the 16T pulley is on the
								upper left pulley shaft.
	Pulley				Feed Rate
	Identification				of 0.0041"/rev.			Note: To remove a pulley, remove the hex
								nut from the pulley shaft, then remove
								the pulley. Take care not to displace the
in	0.0030	0.0033	0.0037	0.0039	0.0041 0.0043		0.004	shaft key. When re-installing the pulley,
								align the pulley keyway with the shaft
B	15	15	15	15	15	15	18	key, then secure it in the reverse order.
C	15	16	18	19	20	21	19	Important: Only tighten the hex nut until
								it is slightly snug—enough to keep the
Figure 55. Feed rate chart column for a rate of								pulley on the shaft. Overtightening it
			0.0041"/rev.					may damage the shaft and bushings.
								-41-