Southbend SB1024 owner manual Setting SB1025/SB1026 Spindle Speed, F2/R2

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

Setting SB1025/SB1026 Spindle Speed

1.DISCONNECT MILL FROM POWER!

2.Remove the belt housing side covers on both sides of the head to expose the V-belt and pulleys, as shown in Figure 35.

Adjustment Lever

Lock Lever

V-Belt & Pulley(1 of 2)

Access

Figure 35. V-belt and pulleys exposed

(Model SB1026 shown).

3.Loosen the two motor lock levers, one on either side of the head, then pull the belt tension adjustment lever forward to release the V-belt tension.

4.Refer to the illustrations in Figures 36–37and position the V-belt on the pulleys for the desired spindle speed.

Note: The Models SB1025 and SB1026 produce slightly different spindle speeds for each V-belt position. Make sure you refer to the correct illustration for the mill.

Also, Model SB1025 has two spindle speeds for each V-belt position that are selected by using the spindle direction switch on the control panel. F1/R1 will produce the lower of the two speeds for each spindle speed range and V-belt position.

SB1025	Switch @
Low Spindle	F1/R1
Speed Range	Motor
	80
	140
	220
	325
Spindle	Switch @
	F2/R2
	Motor
	160
	280
	440
	650
Spindle
SB1025	Switch @
High Spindle	F1/R1
Speed Range	Motor
	710
	1170
	1860
	2800
Spindle	Switch @
	F2/R2
	Motor
	1420
	2340
	3720
	5600
Spindle

Figure 36. Model SB1025 V-belt positions and

speeds.

-42-