VEVOR rotary table

Advert

New Replies

Report Bug

Help/FAQs

VEVOR rotary table

This topic has 33 replies, 11 voices, and was last updated 9 February 2024 at 12:28 by Howard Lewis.

Viewing 25 posts - 1 through 25 (of 34 total)

1 2 →

Author

Posts
30 January 2024 at 15:10 #710819
Michael Callaghan
Participant
@michaelcallaghan68621
Hi, today I took delivery of a VEVOR rotary table. However for the life of me I can not get the table to turn. I have unlocked the two table locks, engaged the turn handle. But the worm drive is stuck solid. So is this a fault within the table or is there a travel lock I have not located.
Advert

30 January 2024 at 15:47 #710823
Brian Wood
Participant
@brianwood45127
Why don’t you ask the suppliers?

Brian
30 January 2024 at 16:10 #710828
Michael Callaghan
Participant
@michaelcallaghan68621
I have, just waiting for a response. But was hoping that someone here would let me sooner.
30 January 2024 at 16:24 #710833
Steviegtr
Participant
@steviegtr
There is a locking screw just above the hand dial. That on caught me out.

Steve.
30 January 2024 at 17:22 #710847
Michael Callaghan
Participant
@michaelcallaghan68621
I found that one Steve. Is there anything else, or do I just have a bad unit.
30 January 2024 at 17:38 #710852
Steviegtr
Participant
@steviegtr
It was 2 long years ago since i bought mine. I am sure there was something locking it that i found later before sending back. Just cannot remember what exactly it was . Sorry , old age thing.

Steve.
30 January 2024 at 18:19 #710861
peak4
Participant
@peak4
Lets have another go, I just lost all the typing again.

Have you disengaged the worm driver, by rotating the lever clockwise?
If not, try doing so; if it won’t disengage, there’s a grub screw in the main casting, which acts as a travel limit for engaging the worm.
With the handle facing you, it’s horizontal to the right just behind the handle.

Can you now release the worm?

Does the handle turn with the worm disengaged?

With it released, does the table turn freely?
If not, there’s a round plate underneath, held on with four cap head screws. N.B. not the four grub screws
Try slackening them slightly.
If that cures it, nip them up equally until the table just starts to bind, then nit up the four allen grub screws to lock the round plate.

In my case, almost nothing turned, as the workshop is cold and the grease had turned to glue.
After cleaning and re-lubing, all is now OK

Bill
30 January 2024 at 18:22 #710864
Diogenes
Participant
@diogenes
Is the worm (handle) free to turn if the worm is disengaged?

..and/or the table? ..which bit is stuck?
31 January 2024 at 07:51 #710957
Michael Callaghan
Participant
@michaelcallaghan68621
Hi, I can disengage the table and that turns ok. But the worm gear and turning handle are completely unmoveable know matter what i unscrew. Still waiting to hear back from the seller
31 January 2024 at 09:52 #710961
Michael Gilligan
Participant
@michaelgilligan61133
It would probably be helpful if you could identify which model of VEVOR Rotary Table you have bought, Michael, as I have already seen various 4” 6” and 8” versions

[apologies if I have missed this]

That said … This video, although covering a different problem, shows some useful details of the contruction:

https://youtu.be/CF-5zSZaAN8?feature=shared

MichaelG.
31 January 2024 at 09:54 #710964
Vic
Participant
@vic
Is it easy to take apart? Some of the cheaper units often seem to benefit from a strip down, thorough clean and re-lube anyway from what I’ve read. Just a thought.
31 January 2024 at 09:57 #710967
Journeyman
Participant
@journeyman
Guess this is similar to my Vertex rotary table. When I converted it to stepper drive I could get the worm to lock up by overdoing the tension of the thrust washer on the worm assembly.

Underneath the black screwed collar is a wave washer that tensions the worm, turning the collar too much can lock it up completely.

More images of the table in bits on Journeyman’s Workshop might help a bit.

John
31 January 2024 at 11:19 #710977
Michael Callaghan
Participant
@michaelcallaghan68621
Thanks chaps. If its a quick fix I can do. Just did not wish to rebuild it. It’s the 8 inch table, but I think they are all the same. Thanks John, that could be the problem, I understand that they use power tools when putting these things together and it my not of been set correctly. Will take a look later.
1 February 2024 at 15:21 #711159
Michael Callaghan
Participant
@michaelcallaghan68621
Ok, the story just keeps going. VEVOR are doing nothing. So today I took the rotary apart. The problem is the shaft which runs inside the worm screw casting is almost completely stuck. I am able to just about turn the shaft with an adjustable if I hold the casting with mole crips. So far I have not figured out how to get the worm gear out of the table casting. Turning the table to push the worm gear out is a no go. I have tried hitting the end of the worm gear from inside the table casting but the angles all wrong. Anyone have any ideas. Thanks.
1 February 2024 at 16:01 #711173
peak4
Participant
@peak4
From my earlier post
“there’s a grub screw in the main casting, which acts as a travel limit for engaging the worm.”

It’s shown in photo 5 of Journeyman’s link.
You need to unscrew it quite a long way, as it engages in a slot in the wormscrew housing.

Photos of your table and were you’re up to would help
Mine’s a 6″ Vertex one so might be slightly different

Bill
1 February 2024 at 16:57 #711182
Michael Callaghan
Participant
@michaelcallaghan68621
Hi, I have removed the grub screw and still can’t get the worm drive to move out from the table case
1 February 2024 at 20:48 #711228
KEITH BEAUMONT
Participant
@keithbeaumont45476
In my table there is a single ball bearing that the grub screw tightens on to. It is a bitch to shake out. Perhaps it is that which preventing movement.

Keith
1 February 2024 at 22:22 #711239
Howard Lewis
Participant
@howardlewis46836
In that case, it is quite possible that the grubscrew, having been over tightened has “dimpled” the wormshaft and the ball is still in the dimple preventing rotation.

If it can be removed, the bruise on the shaft will need to be taken off with a swiss file, or emery, before reassembly, making a mental note mot to overtighten the grubscrew.

It might be worth replacing the ball by a brass pad, to prevent any repeat?

Howard
2 February 2024 at 08:08 #711272
Michael Callaghan
Participant
@michaelcallaghan68621
Hi, I have removed the grubscrew, but not the ball bearing. That could be the problem.i will have a dig around later today and see if I can get it out. Thanks chaps. And still know joy from VEVOR.
2 February 2024 at 08:26 #711277
Michael Gilligan
Participant
@michaelgilligan61133
A very strong magnet might help

MichaelG.
2 February 2024 at 10:01 #711296
Michael Callaghan
Participant
@michaelcallaghan68621
Hi, just an update. Well there is no ball bearing to be seen. I can see right down the hole and see the outer worm drive casting moving. So it’s looking to me like there is a bend in the casing that is making the inner shalf so hard to turn. If that’s the case which I think it is. The only thing I can think of is to drill a hole in the outer casing to allow me to get a drift behind the worm drive and knock the lot out and then split the inner half from the outer and sort the bore out.
2 February 2024 at 10:20 #711303
Fulmen
Participant
@fulmen
I would say you have done more than you are required to, time to send it back.
2 February 2024 at 10:34 #711307
Michael Callaghan
Participant
@michaelcallaghan68621
I agreed, however I am getting nowhere with VEVOR. They just keep asking the same questions which I have answered countless times now. I have opened a case with PayPal in the hope they may get a result. If I had a return address I would take the thing back in person.
2 February 2024 at 10:39 #711311
peak4
Participant
@peak4
With the handle off, are you able to supply a photo or two of the outer part of the worm drive spindle?

Bill
2 February 2024 at 11:06 #711315
Fulmen
Participant
@fulmen
I see. Sometimes fixing stuff is simpler than returning it, but I would stop shy of doing any damage/modifications that could prevent a return.
Author

Posts