Southbend SB1027 owner manual Belt Tensioning, To re-tension the belts

For Machines Mfg. Since 8/09 S E R V I C E Model SB1027

5.Loosen the two cap screws on the face of the leadscrew nut shown in Figure 64.

Cross Leadscrew

Nut & Cap Screws

Figure 64. Cross leadscrew nut and cap screws.

6.Re-install the key onto the leadscrew so that you can use the ball handle in the next step.

7.Use the T-handle hex wrench or similar tool to rotate the adjustment plate on the leadscrew nut in small increments, then rotate the cross slide ball handle to check the amount of backlash.

8.When you are satisfied with the adjustment, re-tighten the two cap screws.

9.Re-install the parts previously removed in the reverse order.

Belt Tensioning

Power is transferred from the motor to the spindle with heavy-duty ribbed belts. With normal use, these belts will gradually stretch over time. When they do, perform the follow procedure to re-tension them.

Tools Needed	Qty
Hex Wrench 6mm	1
Hex Wrench 10mm	1

To re-tension the belts:

1.DISCONNECT MILL FROM POWER!

2.Loosen the two motor mount cap screws, one on each side of the motor (see Figure 65).

Adjustment	Tension
Cap Screw	Adjustment
	Lever
	Motor Mount
	Cap Screw
	(1 of 2)

Figure 65. Belt tensioning controls.

3.Push the belt tension adjustment lever back with moderate force, then tighten the adjustment cap screw in and against the motor mounting plate to secure the setting.

4.Re-tighten the motor mount cap screws.

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