Southbend SB1014F End Gear Setup, Normal Position, Alternate Position, Configuring End Gears

For Machines Mfg. Since 7/09 O P E R A T I O N EVS Toolroom Lathes

End Gear Setup

The gearbox drive gear on this lathe can be configured for the "normal position" or the "alternate position" (both described in following paragraphs), depending upon the type of operation to be performed. The lathe is shipped with the end gears in the normal position. Gears must be thoroughly cleaned and re-coated in grease before installing (refer to Page 61), and the backlash must be maintained at 0.005" for correct meshing.

Normal Position

The 24T end gear is installed in the top position, the 44T/56T end gears in the middle position, and the 57T end gear in the bottom position, as shown in Figure 86. In the normal position, the 56T and 57T gears are meshed, which allows for inch and metric threading and all general feed operations.

Alternate Position

When the 44- and 57-tooth end gears are meshed (see Figure 87), you can perform modular and diametral pitch turning.

24T

56T

44T

Modular and Diametral

Pitch Turning

57T

Figure 87. Alternate end gear position.

24T

44T

56T

	57T
24T
56T
	Inch and Metric Pitch
	Threading
57T	Inch and Metric Feeding

Figure 86. Normal end gear position.

Configuring End Gears

1.DISCONNECT LATHE FROM POWER!

2.Move the gearbox range lever to "Low" so that the gears will not rotate in the following steps, then open the lathe headstock side cover.

3.To change the position of the 57T gear:

a.Remove the cap screw and flat washer that secures the gear, then remove the gear (see Figure 88).

Spacer

Cap Screw and

Washer

Figure 88. Removing the end gear.

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