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High Speed Steel Quick Change Hole Saw Arbor, Hex, 1/4" dia. x 3-1/2" L Pilot Drill Size

  • Item # 5TJC9
  • My Part #
  • Mfr. Model # 49-56-7250
  • Catalog Page # 728
  • UNSPSC # 27112826
Hole Saw Arbor,3/8in Hex Ergo close

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  • Shipping Weight 0.55 lbs.
Country of Origin China Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • Hole Saw Product Grouping Hole Saw Accessories
  • Item Quick Change Hole Saw Arbor
  • Shank Size 3/8"
  • Shank Shape Hex
  • Thread Size 5/8"-18
  • Fits Hole Saw Dia. 1-1/4" and Larger
  • Pilot Drill Size 1/4" dia. x 3-1/2" L
  • Material High Speed Steel
  • Replacement Pilot Drill No. Mfr. No. 49-56-8010
  • For Use With Drill Chucks 3/8" and larger
  • Includes Thunderbolt(R) Pilot Bit
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Customer Reviews

Rated 3.5 out of 5 by 8reviewers.
Rated 4 out of 5 by Great product, once use explained I agree with other commenters, it should not be necessary to remove the smaller set screw. This screw holds small ball bearing and spring that make the quick-disconnect feature work. Because of inadequate instructions with point-of-sale packaging, I too, took out the smaller set screw (larger set screw holds twist drill) only to have the ball bearing fall to floor and I never did see a spring. I had to return the original item to my retailer. I wonder how many get returned before Milwaukee Tool will agree to improve packaging instructions for what is otherwise a great product. January 11, 2015
Rated 5 out of 5 by Easy to Use and Strong This was included in the Milwaukee 14 piece bi-metal hole saw set. Simply pull back the collar, thread on the hole saw and push the collar back. The threads are very good quality and clean, so the hole saw spins on effortlessly. Best of all, NO TOOLS REQUIRED! There is no need to remove the allen screw, it just destroys the arbor. January 9, 2015
Rated 3 out of 5 by Lost parts My only complaint would be that the set screw design for holding the arbor in place is not intuitive. One of my workers lost the ball bearing and spring the first time useing it. I'll purchase a new arbor and give specific instructions to workers who might try to use it in the future. January 7, 2015
Rated 4 out of 5 by Use I know it's not that intuitive, but to use this you need to pull the collar to expose the shank where your hole blade will fit. Once you screw it on, then push the collar back to lock the blade in place. Took all of 1 minute to figure this out and there's no need to remove the allen screw. Good luck folks and hope this helps. October 30, 2014
Rated 1 out of 5 by Can't get it to work I removed the Allen screw and can't get the bit and the arbor back together again. So I can't use it. Very frustrated and disappointed. August 31, 2014
Rated 4 out of 5 by So glad I read the reviews! I bought the 4" hole saw for sutting light fixture boxes and the quick change arbor to fit it. It says pull to release on the package, but fails to mention you must first loosen the allen screw in the tool free design statement. Didn;t feel so dumb after reading the other comments in the reviews. April 10, 2014
Rated 3 out of 5 by Don't pull the arbor apart!! Do not dis assemble the arbor right out of the container. I have other hole saws with a common arbot that screws into place and relies on flats on the threaded shaft to prevent rotation of the saw blade. The problem with this design is that it uses a detent designed with a ball bearing, spring and small allen head screw that forces the ball bearig into a groove on the arbor shaft. If you pull the arbor apart like I did, the ball bearing and spring fall out. Fortunately, I found the ball bearing right away. Unfortunately, it took me 15 mintues of chinese puzzle playing and looking on line for documentation (which I couldn't find on the Milwaukie web site) before I determined that there must be a spring as part of the detent design. Luckily I found the spring and assembled it with some lock-tite blue to hold the screw in place.Now the arbor works well, but the saw blade still has a little play in the rotation because you have the pins on the sliding collar have to align with the holes in the base of the saw blade. I hope this saves a few headaches... Milwaukie, either change the desigh or put some directions on the cotainer, a "do not disassemble" or other thing that prevents us idiots from assuming this kind of mistake. February 1, 2014
Rated 4 out of 5 by Nice tool, needs a minor improvement This is a very nice tool that works very well. I bought it to use with large hole saws for wood and they work together quite well. This is a very solid tool that gives the user a lot of confidence in the kind of job that has a relatively high risk of both injury and part damage. The only real flaw I found is that this otherwise solidly built chuck has a set screw lock for the arbor that has an allen key size of apparently 2mm (that's not actually indicated anywhere, but 3/32 is clearly too large and 5/64 is too small). What this means is that the first time I tried to tighten down the set screw it rounded out and the arbor was permanantly stuck with the hole saw I'd just put in place. After considerable work I was able to loosen the set screw just enough that I can engage and disengage the arbor lock now to trade out hole saws, but I'll never be able to lock it down again. If I could somehow back the set screw the rest of the way out I could replace it with a case-hardened set screw, or better yet just a machine screw so I could get a good hold on it if it jammed again, but that doesn't seem to be in the cards. It seems to operate safely without locking down the arbor, so it's still a functioning tool and it otherwise does its job well. The design should be modified to allow a slightly larger set screw with a larger allen key size so that it won't be so easily damaged. March 12, 2013
  • 2015-09-08T19:48:00.284-05:00
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