Southbend SB1053 owner manual Chip Drawer, ⁄4 or 3⁄4 Fractional TPI, 27⁄8 TPI

For Machines Mfg. Since 3/11 O P E R A T I O N 16-Speed Gearhead Lathe

1⁄4 or 3⁄4 Fractional TPI

For TPI that have a 1⁄4 or 3⁄4 fraction, use position 1 on the thread dial (see Figure 94).

TPI

2¼,2¾,	Position
3¼,3¾	1 Only

Figure 94. Position for 1⁄4 or 3⁄4 fractional TPI.

27⁄8 TPI

The thread dial is not used for 27⁄8 threading or metric threading (see Figure 95). The half nut must stay engaged with the leadscrew throughout the entire threading operations.

27⁄8	Same as	Thread Dial
	Metric
		Not Used

Threads

Chip Drawer

The chip drawer shown in Figure 96 catches swarf and metal chips during the machining process. It easily slides open to provide access to swarf during cleanup.

Also, the chip drawer contains a screen that allows run-off coolant to drain back into the reservoir.

Chip

Drawer

Figure 96. Chip drawer.

Figure 95. Half nut stays engaged for 27⁄8 TPI.

If pulled out quickly and more than halfway, the drawer could fall out and hit your legs and feet, causing serious injury. Therefore, open the drawer slowly and avoid opening it more than halfway.

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