| Problem | Cause | Correction |
|---|---|---|
| Barber Pole Finish | Improper lubrication of tableways | Adjust the oile flow or change oil |
| Work loose on centers | Be sure the footstock and headstock are properly clamped | |
| Centers do not fit spindles | Check centers for fit | |
| Loose fitting footstock spindle | Obtain new footstock spindle | |
| Burlap finish | Loose diamond tool | Keep tool securely fastened |
| Vibration of diamond tool | Damped vibration support | |
| Uneven table traverse when truing | Check hydraulic system | |
| Burnt Work or Cracked Surfaces | Wheel too hard | Try softer wheel or make act softer |
| Wheel structure too dense | Try more open structure wheel | |
| Wrong wheel bond | Consult Radiac Application Department | |
| Grinding wheel over speed | Reduce speed | |
| Work revolving too slowly | Increase work speed | |
| Grinding cut too heavy | Rough and finish grind with two wheels | |
| Insufficient coolant | Check coolant level, pipes and pumps | |
| Nozzle not directing coolant properly | Redirect flow or obtain new nozzle | |
| Wrong Coolant | Consult Radiac Applcation Department | |
| Grinding wheel improperly trued | Redress wheel | |
| Chatter Marks | Grinding cut too heavy | Lighter cuts |
| Wheel too hard | Softer wheel, increase work speed, dress coarser, reduce wheel speed, enrich grinding fluid mixture | |
| Wheel out of balance | Balance the wheel | |
| Slendor work unsupported Machine Vibration | Check for vibration within the machine and for vibration tramsitted to the machine | |
| Diamond Truing lines | Diamond too sharp | Try a duller diamond |
| Table traverse fast | Slow table speed | |
| Wheel too hard | Try softer wheel or make act softer (See #1 above) | |
| Feed Lines | Wheel not suitable | Change Wheel |
| Improper control of traverse or work speed when finishing | Change work speed or wheel speed when finishing | |
| Improper coolant distribution when truing | Readjust coolant flow and direction | |
| Improper use of steadyrests | Ensure steadyrests are even | |
| Head or footstock out of alignment | Check head and footstock, tableways and center holes. | |
| Long wave marks | Out of balance wheel | Rebalance wheel |
| Stopping wheel without turning coolant off, causing unbalanced wheel | Rebalance wheel and make it a rule to stop coolant and run wheel until moisture is thrown off | |
| Wheel oil soaked on one side | Replace wheel | |
| Allowing wheel to absorb moisture from floor | Store in racks off floor | |
| Out-of-Round Work When Plunge Grinding | Work piece center holes out of round or not in line | Relap center holes |
| Burrs in work piece center holes | Clean holes | |
| Work loose on centers | Be sure footstock and headstock are clamped | |
| Centers loose | Tighten and clean centers | |
| Center holes do not fit spindles | Replace and clean centers | |
| Center goles out-of-round | Regrind center holes | |
| Work piece center holes not deep enough | Deepen holes or blunt center points slightly | |
| Work centers scored | Regrind centers and lubricate | |
| Center points worn down | Regrind centers | |
| Work too tight on centers | Loosen footstock spring tension | |
| Insufficient coolant | Readjust coolant flow | |
| Rough Finish | Wheel too coarse or too hard | Softer wheel, increase work speed, dress coarser, reduce wheel speed |
| Diamond too sharp | Try dull diamond | |
| Dressing too coarse | Slow down dress traverse, lighter dress | |
| Cut too heavy | Try lighter side | |
| Traverse too fast | Slow down speed | |
| Work speed too fast | Decrease work speed | |
| Lack of proper steadyfast | Lighter stock removal, softer wheel | |
| Dirty coolant | Change coolant | |
| Solution of coolant too weak | Adjust concentration | |
| Shadows | Grease or oil spots on wheel | Redress wheel face |
| Hard spots in wheel surface | Heavily redress wheel or replace wheel | |
| Wheel loading See long wave marks | Redress wheel. | |
| Short wave marks | Vibration from belts Vibration transmitted from other machine Vibrations in hydraulic system Vibration from motors |
All these possible causes are corrected by repair and/or replacemenmt of machine components |
| Uneven Wheel Surface | Rapid diamond wear | Change to larger diamond |
| Improper distribution of coolant | Readjust coolant flow and direction | |
| Diamond tool holder not securely clamped | Securely fasten holder | |
| Table floating | Reduce lubricant flow to table or change to lighter oil |
