Southbend SB1049F owner manual Faceplate, Jaw tightening sequence

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

5.Tighten each jaw in small increments. After you have adjusted the first jaw, continue tightening the remaining jaws in an opposing sequence, as shown by the sequential order in Figure 35.

13

Workpiece

Center Point

42

Figure 35. 4-jaw tightening sequence.

6.After the workpiece is held in place by the jaws, use a dial indicator to make sure the workpiece is centered in the chuck.

—If the workpiece is not correctly centered, make fine adjustments by slightly loosening one jaw and tightening the opposing jaw until the workpiece is correctly positioned (see Figure 36 for an example).

Faceplate

Refer to the Chuck Installation (see Page 33) and Chuck Removal (see Page 34) instructions to install or remove the faceplate.

The faceplate included with your lathe can be used for a wide range of operations, including machining non-concentric workpieces, straight turning between centers, off-center turning, and boring.

The tools needed for mounting a workpiece will vary depending on the type of setup you have.

Machining non-concentric workpieces at a high speed could cause the workpiece to be thrown from the spindle with deadly force at the operator or bystanders. To reduce this risk, only machine non-concentric workpieces at low speeds and clamp counter-weights to the faceplate to balance it.

Failure to properly secure a workpiece to the faceplate could cause the workpiece to be thrown from the lathe with deadly force at the operator or bystanders. Use a minimum of THREE independent clamping devices to hold the workpiece onto the faceplate.

Figure 36. Example photo of non-cylindrical workpiece

correctly mounted on the 4-jaw chuck.

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