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Thread: O Mill vertical drive gear
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23rd April 2015, 01:38 AM #1Senior Member
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O Mill vertical drive gear
I have been asked to do something about making new helical drive gears for the vertical head of the O mill. I am not sure if there have been any changes to the specs of this gear anytime during their manufacturing run. With this in mind, I would appreciate any owners who can give me good accurate dimension such as thickness, diameter, bore, toothcount and mounting hole dia and spacing, along with the machine number to identify in what order any changes may have taken place.
I have noticed changes in the size of the fibre gear and shaft gear on the motor drive unit and am reluctant to invest in the project of making the vertical head part in case there are similar variants.
regards Mal
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23rd April 2015 01:38 AM # ADSGoogle Adsense Advertisement
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24th April 2015, 07:25 AM #2SENIOR MEMBER
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Hi Mal,
I'll be back early June if that's not too late. Hopefully I'll have saved enough money to buy a 3 Jaw for my mill as well.
Cheers Ben.
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25th April 2015, 10:21 AM #3.
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Hello Mal,
My mill is a early version with the serial number OL-8. I will remove the head and measure the gear for you in the next day or so.
Bob.
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25th April 2015, 12:05 PM #4Senior Member
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27th April 2015, 07:42 PM #5Senior Member
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These are what I get.
Hercus OLM-288
Dia. 3.2370"
Width 0.7540"
Bore 0.7500"
Teeth 47
Mounting hole dia. 0.2625"
Spacing 1.6250"
C/bore dia. 0.4070"
C/bore depth 0.2700"
Hope that helps.Nev.
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27th April 2015, 09:06 PM #6Senior Member
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3rd May 2015, 11:30 AM #7Senior Member
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Bump. Anyone else with the gear dimensions?
Nev.
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3rd May 2015, 01:07 PM #8.
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OK Nev, you've made me feel sufficiently guilty that I've stopped painting a window frame to pull the gear off the mill for a few measurements.
Dia. 3.238"
Width 0.753"
Bore 0.750"
Teeth 47
Mounting hole dia. 0.270"
Spacing 1.625"
C/bore dia. 0.437"
C/bore depth 0.260"
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9th May 2015, 08:28 PM #9Intermediate Member
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OLM 528
Dia. 3.235
width .750
Bore .750
Teeth 47
Mounting hole .265
Spacing 1.625
C/bore .407
c/bore depth .297
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