|
|
Register | All Photos | FAQ | Members List | Calendar | ShopStream (Radio/TV) | Search | Today's Posts | Mark Forums Read |
Tool Time Let's talk shop. Equipment, Tips & Tricks, Safety issues - Post it here. |
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Burr king bounceing
I have a burr king belt grinder that I bought 20 yrs ago used and its always been smooth, I haven't used it much the last 5 yrs and started back recently grinding a few blade and its developed a bounce in it I pulled the wheels off and ran it and it does it without belt or wheels attached, not as bad but its there, so I pulled the pulleys off and ran just the motor and I still feel it so I think its in the motor, my question is can the motor be fixed like bearings changed out? its a general electric 1 hp 1750rpm, thinking I may take it apart and look, any suggestions?
Gary |
#2
|
|||
|
|||
qll...The bearings in the motor can be replaced. If the motor was running satifactory when you last used it, it's unlikely that the bearings are the problem. Bearings do not typically go bad on equipment that is not being run. Try just letting the motor run for awhile and see if simply "exercising" it will cure the problem. Capacitors are more likely to go bad during periods of not being used. If you have a way to oil the bearings it could help since it's possible that any lube could have dried and be contributing to the problem. You might also try heating the shaft with a propane torch. If the lube has dried or gotten stiff, that could help revive it. If none of this works, dissassemble it and check out the bearings. It's all doable, but with a single phase motor, the centrifugal switch can cause you to seek alcoholic relief before you can get it back in place. Three phase motors are easier.
|
#3
|
|||
|
|||
Thanks Ed
I changed out the bearings and it was so simple it scared me, so of course it didn't fix the issue, the motor seems pretty good but when I got it back together it still bounces, maybe not as much, thinking it may be the bearing on the grinder, probably a little from all of them. thanks for you input ! |
#4
|
||||
|
||||
Had the same problem with one of mine?.it was the drive belt, changed it out and all was fine, of course it could be a wheel, either the grinding wheel or and idler wheel. Check those out and see if that helps.
John I. __________________ Life Member: NRA, VFW, & The Alaska Bowhunters Assn Voting Member: GA Custom Knifemakers' Guild and The Knifemakers GUILD MSG, US ARMY Retired Last edited by John I Shore; 03-15-2013 at 08:44 AM. |
#5
|
||||
|
||||
When you say "bouncing" is the motor maintaining constant RPM? Is this a balance issue with an out of round contact wheel or abrasive belt?
If the motor has sat for long periods the armature may have pitted due to lack of use. This will cause the motor to run in spurts if the pitting is bad. You can remove the brush and inspect the armature and manually turning the wheel to verify that the copper contact is clean. __________________ Mike |
#6
|
||||
|
||||
Mike's observation sounds most likely culprit to me, sense you said you could still feel it in the motor after replacing the bearings. Some auto alternator shops will trouble shoot your motor for a small fee and redress your armature and replace the brushes. Cheaper than a new motor.
__________________ Carl Rechsteiner, Bladesmith Georgia Custom Knifemakers Guild, Charter Member Knifemakers Guild, voting member Registered Master Artist - GA Council for the Arts C Rex Custom Knives Blade Show Table 6-H |
Tags |
auto, back, bee, blade, grinding, knife, simple |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
New accessory for my Burr-King | DC KNIVES | Tool Time | 2 | 08-11-2007 08:30 AM |
Burr-King 960 | DC KNIVES | Tool Time | 3 | 07-03-2007 04:46 PM |
Burr King | Joel | Tool Time | 8 | 03-19-2007 11:05 PM |
Burr King grinder | Randy Winsor | The Newbies Arena | 9 | 12-09-2005 02:37 AM |
Burr King | bernie | The Supply Center | 0 | 09-25-2002 08:12 AM |