Southbend SB1024 Setting SB1025/SB1026 Spindle Speed Range, Model SB1025 Spindle Speed Ranges

For Machines Mfg. Since 8/09 O P E R A T I O N SB1024/SB1025/SB1026

Properly setting the spindle speed range for the Model SB1025/SB1026 involves correctly positioning the high/low range lever AND the spindle speed range selector. ALWAYS make sure these two devices are properly set before beginning the spindle rotation to avoid damaging the machine and voiding the warranty.

Setting SB1025/SB1026 Spindle Speed Range

1.Make sure that the spindle rotation is turned OFF and the spindle is at a complete stop.

2.Use the charts below to find the spindle speed range that includes the required spindle speed for your operation.

Note: The Model SB1025 spindle direction switch on the control panel has four settings that change the direction and speed of the spindle motor for each spindle speed range. Positions F1 (forward) and R1 (reverse) use the low motor speed, and F2 and R2 use the high motor speed. Use Figure 15 on Page 29 as a visual reference for the spindle direction switch positions.

Model SB1025 Spindle Speed Ranges

Low Range	80–325 RPM
w/Switch @ F1/R1
Low Range	160–650 RPM
w/Switch @ F2/R2
High Range	710–2800 RPM
w/Switch @ F1/R1
High Range	1420–5600 RPM
w/Switch @ F2/R2
Model SB1026 Spindle Speed Ranges

Low Range	80–325 RPM
High Range	710–2800 RPM

3.Low Spindle Speed Range: Pull the knob of the spindle speed range selector (see Figure 33) out to disengage the detent pin, rotate the selector clockwise to the front position, then release the knob.

Note: If it is difficult to move the range selector, rotate the spindle by hand to help mesh the gears until the selector moves freely.

High	Low
High/Low
Range Lever
	Low	High
		Range Selector

Figure 33. Model SB1025/SB1026 spindle speed

range controls.

4.Make sure the selector detent pin is well seated by attempting to move the selector without pressing it toward the head.

—If the detent pin is well seated, the selector will not move when you attempt to move it, as instructed above.

—If the selector does move when you attempt to move it, as instructed above, then re-position the selector so that the pin is firmly seated.

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