Southbend SB1020 User Manual

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For Machines Mfg. Since 8/09

Model SB1020

The Model SB1020 is equipped with limit 

switches that prevent the saw from operating 

if the blade is not properly tensioned and stop 

the saw motor when it reaches the end of a cut. 

If either of these functions does not operate 

correctly, you will need to adjust the appropriate 

limit switch.

1.  DISCONNECT BANDSAW FROM POWER! 

2.  Tension the blade until the tension gauge 

reads 20,000 PSI, which is the transition 

from yellow to green.

3.  Use a 3mm hex wrench to loosen the two 

button head cap screws that secure the blade 

tension switch bracket shown in Figure 46.

4.  If the square does not fit snugly against both 

the stationary jaw and the blade, loosen the 

jam nut shown in Figure 44, then thread 

the stop bolt inward.

5.  Loosen the headstock lock lever, rotate the 

headstock so that the blade is square to 

the vise, then re-tighten the headstock lock 

lever.

6.  Adjust the stop bolt as needed until it just 

touches the cast iron swivel base, as shown 

in Figure 44, then snug the jam nut against 

the stop block without turning the stop bolt.

7.  Repeat this procedure for the 60° left and 45° 

right stops using a 45° square and a 30°/60° 

triangle (or an adjustable square), as shown 

in Figure 45.

Stationary Jaw

Movable 

Jaw

Square

Blade

Vise

45° R

60° L

4.  Slide the switch away from the switch plate 

to make sure it releases, then slowly slide it 

back towards the switch plate just until you 

hear the switch click. Hold it in this position, 

the re-tighten the button head cap screws.

5.  Release tension from the blade. If the switch 

does not immediately click again, signaling 

that tension has been released, repeat Steps 

3–4, slightly adjusting the switch away from 

the switch plate.