Southbend SB1020 owner manual Troubleshooting

Model SB1020 TROUBLESHOOTING For Machines Mfg. Since 8/09

Symptom

Possible Cause

Possible Solution

!

The cut is crooked, the blade wanders, cuts slow, or shows overheating on one side of the cut or the blade.

1.The feed rate/pressure is too high.

2.Loose blade.

3.Blade is loading up.

4.Incorrect coolant mixture for workpiece/cut.

5.Blade installed backwards.

6.Dull blade; missing teeth.

7.The blade speed is wrong.

1. Decrease the feed rate/pressure (see Page 25).

2.Keep blade properly tensioned (see Page 24).

3.Install a blade with more suitable TPI or different style of teeth.

4.Use correct coolant mixture (refer to coolant manufacturer's recommended mixture).

5.Check blade rotation as described in “test run” and reverse blade if necessary.

6.Replace blade 23.

7.Adjust feed rate and cutting speed as required (see Page 25).

Blade dulls	1.	Blade is improperly broken in.	1.	Replace blade, and complete blade break in
prematurely, or				procedure (see Pages 23 & 24).
metal sticking to	2.	The blade gullets are loading up	2.	Use a blade that has larger gullets to carry out
the blade.
		with chips.		material.

3.The blade TPI is too fine for the 3. Use a coarser-tooth blade, adjust feed rate, adjust

		workpiece, so the teeth load up and		blade speed, make sure the brush is working.
		overheat.
	4.	Incorrect coolant mixture for	4.	Use correct coolant mixture (refer to coolant
		workpiece/cut.		manufacturer's recommended mixture).
	5.	The workpiece has hard spots,	5.	Replace the blade with a special blade for cutting
		welds, or scale.		hardened materials.
Repetitive ticking	1.	Blade is missing teeth.	1.	Replace blade 23.
noise coming from	2.	Blade weld contacting blade guides.	2.	Grind blade weld down smaller.
machine.
	3.	Blade weld may be failing.	3.	Cut and reweld the blade, or replace the blade.
Blade wears on	1.	The blade guides are worn or mis-	1.	Re-adjust or replace the blade guides.
one side or shows		adjusted.
overheating.	2.	The blade support is inadequate.	2.	Tighten the blade guide as close to the workpiece as
				possible.
	3.	Dull or incorrect blade.	3.	Replace blade (see Page 23).
	4.	Incorrect coolant mixture for	4.	Use correct coolant mixture (refer to coolant
		workpiece/cut.		manufacturer's recommended mixture).
	5.	Blade is bell-mouthed.	5.	Install new blade (see Page 23).
Vibration when	1.	Loose or damaged blade.	1.	Tighten or replace blade (see Pages 24 & 23).
operating or	2.	Worn wheel bearing.	2.	Check/replace wheel bearing.
cutting.
	3.	Bent or dull blade.	3.	Replace blade (see Page 23).
	4.	Loose machine component.	4.	Tighten loose component.
	5.	Wheels worn or incorrectly	5.	Replace wheels.
		installed.
	6.	Bandsaw blade wheel appears bent.	6.	Check and replace for bad wheel or bearing.

-36-