Model SB1001 8K™ Lathe | TROU B LESHOOTI NG | For Machines Mfg. Since 8/11 |
Symptom
Possible Cause
Possible Solution
Tapered tool | 1. | Quill is not retracted all the way | 1. | Turn the tailstock handwheel until it forces the | |
difficult to remove |
| back into the tailstock. |
| tapered tool out of quill. | |
from tailstock quill. | 2. | Contaminants not removed from | 2. | Clean the taper and bore and | |
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| taper before inserting into quill. |
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Cross slide, | 1. | Gibs are out of adjustment. | 1. | Adjust gib screws (see Page 54). | |
compound, or | 2. | Ways are loaded with grime or | 2. | Clean the ways and | |
carriage feed has | |||||
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sloppy operation. |
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3. | Leadscrew mechanism worn or out | 3. | Replace leadscrew and nut. | ||
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| of adjustment. |
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Cross slide, or | 1. | Dovetail slides loaded with | 1. | Remove gibs, clean ways/dovetails, lubricate, and | |
compound rest ball |
| shavings, dust, or grime. |
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handle is hard to | 2. | Gib screws are too tight. | 2. | Loosen gib screws slightly (see Page 54). | |
move. | |||||
3. | Bedways are dry. | 3. | Lubricate bedways (see Page 52). | ||
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Carriage will not | 1. | Carriage lock is tight. | 1. | Check to make sure the carriage lock is loose. | |
feed or is hard to | 2. | Chips have loaded up on bedways. | 2. | Frequently clean away chips that load up during | |
move. |
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| turning operations. | |
| 3. | Bedways are dry and in need of | 3. | Lubricate bedways and handles. | |
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| lubrication. |
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| 4. | Gibs are too tight. | 4. | Loosen gib screw(s) slightly (see Page 54). | |
| 5. | Gears broken. | 5. | Replace gears. | |
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Cutting tool | 1. | Tool holder not tight enough. | 1. | Check for debris, clean, and retighten. | |
or machine | 2. | Cutting tool sticks too far out of tool | 2. | ||
components vibrate |
| holder; lack of support. |
| length is sticking out of tool holder. | |
excessively during |
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3. | Gibs are out of adjustment. | 3. | Adjust gib screws at affected component (see Page | ||
cutting. | |||||
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| 4. | Dull cutting tool. | 4. | Replace or resharpen cutting tool. | |
| 5. | Incorrect spindle speed or feed rate. | 5. | Use the recommended spindle speed. | |
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Workpiece is | 1. | Spindle and tailstock centerlines | 1. | Realign the tailstock to the headstock spindle bore | |
tapered. |
| are not properly aligned with each |
| centerline (see Page 31). | |
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| other. |
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Chuck jaws will | 1. | Chuck needs lubrication. | 1. | Remove jaws, then clean and lubricate all surfaces. | |
not move or do not | 2. | Chips lodged in the jaws or scroll | 2. | Remove jaws, clean and lubricate scroll plate, then | |
move easily. |
| plate. |
| replace jaws. | |
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Gearbox change | 1. | Gears not aligned inside headstock. | 1. | Rotate spindle by hand with light pressure on the | |
levers will not shift |
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| lever until gear falls into place. | |
into position. |
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