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1st Nov 2017, 04:51 PM #1Senior Member
- Join Date
- Apr 2008
- Location
- Perth
- Posts
- 269
Lathe Spindle Bearing Replacement
Hallo all
As the title says. I have pulled the spindle out to replace the bearings du to contamination, thing is, I now need to replace all the bearings.
Have a slight problem, have a shaft that needs to be removed that has a bearing, on the end of the shaft was a small grub screw which I have removed, can't figure out how to get that shaft out, there is no threaded hole to place a bolt in to pull, only a turned spot when the shaft was made on a lathe.
Any suggestions.
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1st Nov 2017, 05:31 PM #2Banned
- Join Date
- Feb 2015
- Location
- Oz
- Age
- 73
- Posts
- 459
One of my lathes had similar arrangements, the AL-300 I think it was, the shaft had to be punched out from the inside, the gears and bushes just slid off as the shaft came out.
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1st Nov 2017, 05:42 PM #3Most Valued Member
- Join Date
- Apr 2012
- Location
- Healesville
- Posts
- 2,129
It looks like you need to get to the circlip behind the gear then if the hole in the shaft goes all the way through then you could slide a long bolt or allthread through it and pull it out, maybe a bit of tube and a thick washer on the outside for it to pull into?
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2nd Nov 2017, 08:58 PM #4Senior Member
- Join Date
- Apr 2008
- Location
- Perth
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- 269
Thanks Sacc, thats what I am thinking, problem with that there is no corrosponding opening opposite the shaft, strike distance with side of hammer is about 50mm, looking to get a small enerpac ram.
Shed, the hole does not go all the way through, good advice though.
DD
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2nd Nov 2017, 09:18 PM #5Most Valued Member
- Join Date
- Nov 2008
- Location
- North Brisbane. Qld. Australia
- Age
- 70
- Posts
- 1,511
Drill and tap the shaft and use a bolt and spacer or a slide hammer to pull it out?
Nev.
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2nd Nov 2017, 09:32 PM #6Most Valued Member
- Join Date
- Apr 2012
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- Healesville
- Posts
- 2,129
How about a bolt that fits between the shaft and the casting and with a thread that goes all the way to the head, screw a nut all the way on then a flat washer and a tube
over the bolt, turn the nut against the tube and push the shaft out, if you are suss about the casting being strong enough you could put a suitable packer between the casting and the head of the bolt to spread the load, who knows it might come easy with a bit of a push.
cheers, shed
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5th Nov 2017, 05:01 PM #7Senior Member
- Join Date
- Apr 2008
- Location
- Perth
- Posts
- 269
Thanks Nev, will give that a go on monday, need to buy a suitable tap and drill bit as there is another plate I cant get off, am going to drill, tap and remove it using the bolts to push against the casing, need a intermediate and bottom tap, which I dont have in the thread size I want to use.
DD
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6th Nov 2017, 01:13 AM #8
Hi DD,
Be sure to provide some support for that bearing housing in the middle of the picture, it looks a bit fragile !Best Regards:
Baron J.
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