I have a Ryobi ml618 wood lathe and need to know if they sell different chucks for it like a bowl Chuck

SOURCE: drill chuck swap

1. Turn the screw clockwise to take it out.
2. Then you needs 3/8 allen key & insert the short side of the allen key & tighten the chuck.
3. hold the drill at the edge of the table & wack the allen key
counter clockwise & do it again as needed.
4. dewalt keyless chuck will fit but you might add a washer to insure the chuck is not rubbing the clutch collar.
5. putting it back together the other way.

SOURCE: Chuck on Drill not moving

Re: Ryobi P205 special from Home Depot:
Confusing at first, but easy fix:
The chuck is shipped in the UNLOCKED position (and tightly unlocked, too).
I gripped mine w/rubber gloves and turned toward LOCK direction. It freed up with some effort.
But that's the trouble, it is a bit confusing because you would think you need to unlock it, but it's already unlocked.

SOURCE: I need to remove the chuck from the drill

In continuation after removing the chuck screw which is left hand thread shift the drill to LOW and use a bent handle allen wrench approx the size of the chuck lock it in the jaws. Turn clutch setting to the drill only position and using a hammer strike the hex key. The chuck has standard threads. To reassemble just reverse this

SOURCE: Dewalt Drill DC728. Chuck came out of drill body

If you find that the end of the screw inside the chuck is actually broke then you have a gear problem inside your drill. This is actually a very common problem. Sometimes people push too hard on their drills and the gears inside wear out and break. This prevent the motor from wearing out, but, the gears have to be replaced.
If it is the gears and not the chuck. you broke the minimium of the front gear or gears inside your drill. YOU CANNNOT repair gears. they need to be replaced. you may be able to find some off brand gears to work but, you run the risk that they are not as strong as your original ones, or may not be exactly grooved correctly.
so, if replacing your chuck does not work. find replacement gears. IF you cannot find the gears from the manufacturer see about replacing your drill.
If the chuck is still good, keep it. If you buy the same model, keep your old drill for replacement parts, ie, switch, armature, cord, etc.
hope this helps somewhat.

SOURCE: chuck removal on a ryobi

go to my site and under the tips section there is a detailed description on how to remove this chuck