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Eazypower 30199 1/4-Inch Hex Shank Chuck Adapter with 3/8-Inch-24 UNF Thread
Our Price: $6.09 | Availability: | Usually ships in 24 hours (as of 8:54 AM CT - detail) |
Easily adds a locking keyless chuck to any 1/4-Inch hex drive tool.Allows use of locking steel keyless chuck, 3/8-Inch-24 UNF thread to 1/4-Inch hex, to utilize any standard shank drill bits 1/16-Inch-1/2-Inch sizes and accessories.Use no.3 Phillips screwdriver to secure chuck with left-hand thread screwIsomax contractor quality
Spotlight Customer Reviews:
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Summary:
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Wrong Item In Package
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Comment:
Shipment arrived with a 1/4 hex by 1/2" 20 thread adapter in the package.Contacted manufacturer detailing problem.Eazypower found more such items in their warehouse however they insisted that I return the item before shipping a new one. Precious time lost for the return of a nickel and dime item which they recognize as their error.Beware of this problem.
Comment:
The one I got looks a bit different than the picture (length of shank after groove is relatively short) and was dirty. Problems described by a previous reviewer appears to have been corrected.
1). Locking groove on the 1/4 inch shank is about 6 mm from the end of shank. End of shank appears to have been ground off (correction described by a previous reviewer).
2). Length (shank plus collar) is not 2 inches as in description. It is about 45 mm (about 1.75 inches). Probably the result of grinding off the end of shank to get the locking groove in correct position.
Here is some dimensional information from the one I got that maybe useful to buyers:
a). Length of 3/8 inch-24UNF threaded section is about 17 mm.
b). Length of 1/4 inch shank plus collar about 45 mm.
c). Left hand threaded screw that came with it appears to be M6 with 1 mm thread pitch. It is 26 mm long flat head for #3 Phillips screw driver. The head of screw is squareish round in shape with diameter varying from about 10.6 to 11.1 mm (may have been machined to reduce diameter -- correction described by a previous reviewer).
d). Depth of M6 left hand threaded section for screw in the adapter is about 14 mm. When the screw is fully in adapter, it will stick out about 12 mm.
e). Collar diameter is about 20 mm and it has been machined out for using a 17 mm spanner for holding while tightening. I used a pliers and got jaw marks on the collar (see previous reviewer's comments on material being mild steel).
I bought it to make a large pin vice out of a 1/2 inch Jacobs chuck and it worked out fine for me. Amazon service and shipping (USPS) was excellent. Ordered it late Friday evening and got it next Thursday. I rate it 4-stars. Minus 1-star to Amazon and manufacturer for not providing the needed technical information for such do-it-yourself type stuff. An outline dimensional drawing for such things would be very useful. Cleaning after machining and putting a dab of thread locker on screw would have been a nice touch from manufacturer. A hex or torx type screw head would be better for tightening.
Amazon needs to look at their shipping packages that appears to be a bit on the excessive side. The adapter package was about 7x2x1 inches (length, width, thickness) and weighing about 40 gms (about 1.5 oz.). A small padded envelope would have been sufficient. The shipping box used was 10x7x3.5 inches mostly filled with air bags.
Comment:
If you have a 1/4" Impact drill and another drill, then you need to have two sets of drill bits up to 1/4". If you buy this adapter which is adapted for the Impact drill then all you need to do is buy the separate chuck which can be either 3/8" or 1/2" and you are all set to use all drill bits in both drills.
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Summary:
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Great Idea, Poor Execution
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Comment:
Unfortunately, I cannot recommend this product to anyone who is not willing to undertake some serious re-machining to make this product work, and that makes it unacceptable even though, after the modifications I had to make, it worked pretty much as described. Here's the problem and the solutions, for those of you who feel you are capable of undertaking the effort and wish to save some money.
The purpose of the adapter is to allow use of a standard 3/8" chuck on a power tool which comes with a 1/4" hex shank output, pretty standard on a growing number of hand power tools including both drills as well as impact wrenches. Having the ability to quickly change to a 3/8" chuck allows the use of any sized drill bit or tool, not just ones with a 1/4" hex shank.
The adapter is machined from mild steel and has a 1/4" hex shank at one end, with a groove so that it will lock into place when inserted into a 1/4" hex chuck. The other end of the adapter is machined with a 3/8"-28 threads per inch American style thread on the outside, while the inside is drilled and tapped for a supplied left-handed turn locking thread screw. (In the photo of the product on the Amazon product page, the hex shank is at the top and the 3/8" thread and the left handed locking screw are shown at the bottom.)
But in practice, the actual tool, as supplied, had to be modified considerably before it could be put to its intended use. Here's the list and the corrections:
1) The locking groove (shown near the end of the upper part of the shank) is located too far from the end of the shank, as a result of which, the adapter will not lock into the 1/4" hex driver on most all tools. Correction: while rotating the adapter, grind off about 1/4" from the end of the shaft near the groove; then grind a 45 degree chamfer on that end so that the adapter does not hang up.
2) The head on the locking screw was too large to fit inside the open jaws of my Jacobs 3/8" chuck. Correction: chuck the screw into my other cordless drill and turn it against the grinding wheel to take about 3/32" of the O.D. of the screw head, then once again, grind a small chamfer on the screw head.
3) The shaft on the locking screw was too large to fit through the hole of my Jacobs 3/8" chuck, although the screw which came with the drill itself went through just fine. (In other words, the left-handed locking screw provided with the adapter is a larger diameter than it should be). Correction: drill or ream out the hole in the Jacobs chuck to 1/4".
4) The tapped left-handed thread for the lock screw (bottom of the photo) is of such shallow and insufficient depth that it appears likely that with much use, the thread will completely strip out and leave no way to lock the chuck onto the adapter when reversing the drill or tool. There is no way to correct this; the hole was simply drilled too large and cannot be corrected.
5) The use of mild steel, instead of high carbon or chrome tool steel, combined with very poor machine work, mean this adapter will not last as long as one which was properly made. There is no correction.
That said, once the adapter was modified in this manner, it worked perfectly. However, for those of you who wish to have a 3/8" chuck available for use on tools with a 1/4" shank, I strongly recommend purchasing one of the complete sets supplied by DeWalt or one of the other "brand name" manufacturers to avoid the work and possible grief of this tool.
Comment:
I recently bought a new drill/driver with a "quick change" type hex chuck. I bought this shank to convert a standard type chuck to an adaptor so I could use all my old style [non-hex shank] drill bits with the new drill. It does not work. The short segment at the tip of the shank, which is supposed to lock into the quick change chuck, is too long. So, it does not lock in place in the "quick change" chuck. I might as well use the original round shaft of the standard chuck.
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