Thanks: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 6 of 6
Thread: Motor Noise
-
30th Oct 2017, 08:48 PM #1.
- Join Date
- Nov 2008
- Location
- Perth WA
- Age
- 71
- Posts
- 6,459
Motor Noise
Hello All,
The motor driving my lathe has developed a cyclic clicking noise, The motor is a 750 watt Brooks Crompton single phase, capacitor start, capacitor run model and has run flawlessly for the past 15 years or so
I will pop the end plates off for a squizz probably tomorrow. Any suggestions as to what might be amiss?
Bob.
-
30th Oct 2017, 09:29 PM #2Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,561
Depending on whether the clicking is happening quickly or slowly, check the belt as there may be a hard spot or embedded swarf causing the noise.
Michael
-
30th Oct 2017, 10:17 PM #3Member: Blue and white apron brigade
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 7,189
Change the gears and see whether the click frequency changes, If it does it won't be the motor or the primary belt/pulley but something else in the drive train
-
31st Oct 2017, 03:27 PM #4Golden Member
- Join Date
- Apr 2008
- Location
- NSW
- Posts
- 537
I would take the drive belt /s off first and then run the motor . See if it stops . If it don't put a screwdriver handle to your ear and the blade end on the motor in different places as it's running . If it stops clicking place a load on the motor pully with a piece of wood as a brake lever . If it starts again it could be a bearing . If it seems all normal it must be further along the drive chain . If it's inside the motor it could be a switch system some have at the fan end of the motor or a bearing problem .
The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.
-
31st Oct 2017, 09:12 PM #5.
- Join Date
- Nov 2008
- Location
- Perth WA
- Age
- 71
- Posts
- 6,459
I realise now that the thread title should have been "Beltless Motor Noise".
The noise seemed to be emanating from the motor's centrifugal switch mechanism but on disassembly I could find no apparent problem. The bearings were not as smooth running as they should be so I replaced them with a fresh pair of shielded Nacchis. Some of the bindings on the exposed windings had broken so I re-tethered them with bootmaker's linen thread and 5 minute Araldite. On reassembly I noticed that the rotor could move a few millimeters axially in the end caps. I have another Brooks Crompton motor, a 1/3hp version that has unventilated end caps but other than the lack of holes, look the same as those on the 1 horse motor. Removing the rear end cap revealed a wave and a spacer washer behind the bearing. For some unknown reason those parts were absent in the lathe's motor. The 1/3 hp motor became a donor.
Assembled yet again and remounted on the lathe with the pulley and belt in place, the motor runs smoothly and quietly.
Thank you all for your suggestions.
Bob.
-
31st Oct 2017, 09:58 PM #6Golden Member
- Join Date
- Apr 2008
- Location
- NSW
- Posts
- 537
That's good , those centrifugal switches are a source of problems .
The volume of a pizza of thickness 'a' and radius 'z' is given by pi z z a.
Similar Threads
-
Bearing noise
By ratters in forum THE HERCUS AREAReplies: 10Last Post: 13th Feb 2015, 08:19 PM -
my noise maker
By eskimo in forum GUNSMITHINGReplies: 34Last Post: 21st Apr 2014, 11:15 AM -
Spur gear noise and D.P
By Ueee in forum METALWORK GENERALReplies: 14Last Post: 4th Jun 2012, 09:47 PM -
Noise from MH 48 mill
By Ben Dono in forum METALWORK GENERALReplies: 33Last Post: 11th Feb 2012, 05:50 PM -
AL960 funny noise
By rfurzer in forum METALWORK GENERALReplies: 5Last Post: 12th Dec 2010, 09:11 PM