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Author Topic: question for machinists  (Read 1420 times)

Offline doc_rot

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question for machinists
« on: Jan 24, 2018, 01:31:32 »
I need to bore this needle bearing inner race from 16 to 17mm. A carbide boring bar wouldn't cut it at all. I'm thinking about making a tool holder for a dremel and putting a sanding drum on it. what should i do?

Offline Tim

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Re: question for machinists
« Reply #1 on: Jan 24, 2018, 02:19:15 »
Buy a replacement bearing with the right dimension race?
"Quality . . . you know what it is, yet you don't know what it is. But that's self-contradictory. But some things are better than others, that is, they have more quality. But when you try to say what the quality is, apart from the things that have it, it all goes poof! There's nothing to talk about. But if you can't say what Quality is, how do you know what it is, or how do you know that it even exists? If no one knows what it is, then for all practical purposes it doesn't exist at all. But for all practical purposes it really does exist."

Offline doc_rot

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Re: question for machinists
« Reply #2 on: Jan 24, 2018, 02:32:56 »
I looked but its a weird size. The needle bearings are 25x32x30 and the inner race needs to be 17x25x35 or could be 17x25x30

Offline J-Rod10

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Re: question for machinists
« Reply #3 on: Jan 24, 2018, 08:44:56 »
What is that made of that carbide wouldn't touch?


Offline SONIC.

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Re: question for machinists
« Reply #5 on: Jan 24, 2018, 09:50:48 »
Adamantium

Beat me to it you bastard.

Offline J-Rod10

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Re: question for machinists
« Reply #6 on: Jan 24, 2018, 11:30:50 »
Probably give ceramic a go on the Wolverine claw bushing.

Offline Pete12

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Re: question for machinists
« Reply #7 on: Jan 24, 2018, 18:52:34 »
I need to bore this needle bearing inner race from 16 to 17mm. A carbide boring bar wouldn't cut it at all. I'm thinking about making a tool holder for a dremel and putting a sanding drum on it. what should i do?

I made a tool post holder for a die grinder with a cylindrical stone to grind my chuck jaws. I angled it very slightly to cut on the leading edge and it worked perfectly.

Offline J-Rod10

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Re: question for machinists
« Reply #8 on: Jan 24, 2018, 20:02:51 »
I made a tool post holder for a die grinder with a cylindrical stone to grind my chuck jaws. I angled it very slightly to cut on the leading edge and it worked perfectly.
Poor mans tool post grinder. Well done.

*Not calling you poor, just far cheaper than a tool post grinder.

Offline Pete12

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Re: question for machinists
« Reply #9 on: Jan 24, 2018, 20:40:03 »
Poor mans tool post grinder. Well done.

*Not calling you poor, just far cheaper than a tool post grinder.

Haha, no problem. As much as I'd like a tool post grinder it would be very hard to justify for the amount of times I'd use it.