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Jet

JET Benchtop Mortiser, 1/2" Chisel, 4-3/4" Stroke, 115V 1Ph (Model JBM-5)

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Availability: In Stock.
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Arrives Thursday, Oct 1
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Style: Benchtop mortiser


Features

  • Column is reversible for mortising larger stock
  • Long, multi-position mortising handle let you reposition the feed handle for easier operation and optimum handle position
  • Powerful 1/2-HP motor provides consistently smooth performance
  • Quick adjust depth stop for uniform mortise depths
  • Removable On/Off toggle switch prevents accidental or unauthorized use of the tool
  • Three-jaw drill chuck keeps a positive grip on mortising bits with up to 3/8" diameter shanks
  • Two hinged side doors allow easy access to the drill chuck

Description

We see a future built on great brands, products, and people. In every facet of our business, we leverage the strengths of our global infrastructure to maximize the benefits of all three Ideal for professional furniture makers as well as for home woodworkers, Jet's affordable 708580 JBM-5 benchtop mortiser features a 1/2-horsepower induction motor and is designed to take up to 1/2-inch chisel bits. The dependable rack- and-pinion head adjustment gives you accurate drilling control, while its heavy-duty cast iron and steel construction provides durability and stability for years of use. Dependable mortiser for home woodworkers or professional furniture makers (view larger). FeaturesAt only 44 pounds, the Jet 708580 is sturdy but also easily maneuvered, plus it reverses on its base to allow for mortising in long stock. The 4-3/4-inch head stroke is great. Bits are easy to change. Just flip open the steel door on either side (other models on the market often have doors made of flimsy plastic) to gain easy access to the chuck. And, thanks to the 4-inch chuck key, there's little chance of banging or scraping your knuckles while switching bits.The mortiser's feed handle adjusts so you can choose the most comfortable position for each application, and it also offers a quick-setting depth stop and a removable toggle switch that prevents accidental or unauthorized use of the tool. It's set on a heavy- duty cast-iron base with four predrilled mounting holes. Other features include a three-jaw drill chuck that keeps a positive grip on mortising bits for chisels up to 3/4-inch in size, two hinged side doors for easy access to the chuck, and a reversible column for mortising larger stock. It's backed by a 5-year limited warranty.SpecificationsWhat's in the BoxOne Jet 708580 JBM-5 benchtop mortiser, one hydraulic cylinder, one handle, 3/4- and 5/8-inch chisel bushings, one spindle extension, one chuck key, one table, hold down, fence assembly, screws, and owner's manual. Combines 1/2-horsepower motor for solid performance and a heavy-duty cast iron and steel construction. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer For all the projects you do that require mortising, get solid performance and trouble-free operation with this 1/2-horsepower, 115-volt , benchtop mortiser from JET. The rack-and-pinion head raises and lowers for positive drilling control while the long, multiposition splines permit repositioning of the feed handle for perfect handle position. There's a three- jaw drill chuck with an extended chuck key for positive grip on the drill bit. Two hinged side doors allow for complete drill chuck access while the heavy- duty cast-iron and steel construction adds durability and stability to the base. A removable toggle switch prevents accidental turn-on. 1/2-inch chisel capacity and 4-3/4-inch head-stroke. This set comes with three bits: 1/4-inch 708590, 3/8-inch 708592, 1/2-inch 708593. See more

Brand: Jet


Power Source: Corded Electric


Maximum Rotational Speed: 1750 rpm


Voltage: 115 volts


Amperage: 6 A


Power Source: Corded Electric


Maximum Rotational Speed: 1750 rpm


Voltage: 115 volts


Amperage: 6 A


Maximum Chuck Size: 0.38 inches


Additional Features: Portable


Number of Speeds: 1


Speed: 1750 rpm


Maximum Power: 0.5 hp


Drill Type: Drill Press


Drilling Capacity Wood: 0.5 inches


Drilling Capacity Metal: 0.38 inches


Color: White and Black


Material Type: Cast Iron, Steel


Item Dimensions L x W x H: 14"L x 9.5"W x 30"H


Item Weight: 44 pounds


Brand Name: Jet


Included Components: Mortising Machine, Hydrualic Cyclinder, Handle, 3/4" and 5/8" Chisel Bushings, Spindle Extension, Chuck Key, Table, Hold Down, Fence Assembly, 3 Chisels


Model Number: JBM-5


UPC: 662755139536


Number of Packs: 1


Global Trade Identification Number: 36


Unit Count: 1 Count


Manufacturer: JET


Manufacturer Warranty Description: 5-Year Warranty (if used for commercial or industrial purposes then defaults to a 2-Year Warranty)


Number of Items: 1


Item Type Name: Mortiser


Manufacturer Part Number: 708580


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • For the price, perfect!
Style: Benchtop mortiser
Based upon the build quality of my other Jet shop tools and on Amazon reviews, I selected this machine. I needed a mortising machine for a project of building 12 chairs. There are lots of rave reviews already out there, so I won't repeat all the good stuff. Just believe it! What I will do is to defend this little machine's only few weak spots, or at least the criticisms in the reviews. The main one is about the table being too small, and because it is made of MDF, "cheap." Well, the table is actually the cast iron base, and it has a piece of MDF bolted down to it to protect your chisels should you drill clear through a piece of wood. Others complain the table is too small. Not exactly sure why you would need it to be any bigger, but I had no issues with that doing 144 mortises in some pretty strange shapes of wood. The hold-down is, in fact, poorly designed, but it's such and easy fix that it is laughable. I just cut two small wedges of wood and installed them on the bottoms of the two hold-down arms (with a wrap of masking tape) so that now they press down evenly on the workpiece instead of only on the side toward the machine. End of difficulty extracting the chisel from the workpiece. For some of my pieces, to get them placed in the same spot each time, I used a drill-press vise bolted to the cast-iron table. I clamped a stop onto my work table to locate the end of the workpiece and the little vise did the rest. The three chisels that ship with this machine are incredibly sharp and worked perfectly. (I only used two of them.) The motor's power is more than ample, the machine is designed so that the pull-handle can be locked into whatever position that is the most advantageous for the situation. It does take a hefty pull, so that's important. For its low price, this is a terrific machine. I highly recommend it. BTW, it arrived from Amazon well-packaged and in perfect condition. And no, I didn't get paid to write this review; I just like to give praise when it's due! I'm giving 5 stars in spite of my only criticism, the hold-down, because it was such an easy fix, and also because had I wanted a more "perfect" mortiser, I could have paid $1000 for a professional machine. This is a tool I will not use every day, and for the price, it is perfect. I thought it was actually fun to use! Imagine drilling square holes! ... show more
Reviewed in the United States on April 17, 2014 by riverguy

  • Best value for the money
Style: Benchtop mortiser
Being new to woodworking, I've had to trust the reviews of others in trying to sort out which brand of tools to buy so I hope this helps other newbes. Having been in the construction industry for over 35 years, I had pretty much done it all with the exception of cabinet/furniture making. With that in mind, I decided to take on an ambitious remodel for home including building the cabinetry/vanities for the bathroom and a new bedroom set. After reading more reviews than I can count and taking a trip out to the local HF to look at the Central Machinery Mortiser, I decided to spend the extra money on this one. Within a half hour of receiving it, I had it set up and was drilling my first mortis joint. Assembly literally took minutes to complete since the instructions are clear, concise and easy to understand. The lightweight oil they shipped everything in was easy to wipe off with some mineral spirits and part seemed well fit and finished. The exception to this is the hold down clamp. As others have said, this is pretty much useless. I don't know what modifications the others have made but I pretty much set the clamp aside and used the quick-grip squeeze clamps on each end of the fence to hold the wood in place. These allowed me quick and easy adjustments to the wood as well as being an inexpensive, less time consuming alternative to modifying a piece of metal. The fence itself seemed fine although I can see myself extending it at sometime in the future and the chisel bits that came with the unit were extremely sharp and worked well. ... show more
Reviewed in the United States on March 25, 2015 by Shawn H

  • As expected-- makes square holes
Style: Benchtop mortiser
Finally decided to try a benchtop mortiser and with the rebate the Jet looked a bit better (i.e. cheaper) than the other options. Contrary to some of the recent reviews below, mine arrived without a scratch in a pristine-looking box-- and just three days after I ordered with free shipping. Can't argue about that. This is my fifth or sixth major tool purchase from Amazon (inc. jointer and planer) and I've always had excellent experiences with their shipping service. Assembly took less than ten minutes and I was making sawdust soon after. The unit actually comes mostly assembled; all that has to be added is the arm, fence, and table. Nothing was slathered with grease! As others have noted there's a hydraulic cylinder on the head that doesn't really seem to do much, but I found the action to be relatively smooth without it. My test cuts in red oak went in easily and the bit did not clog. My next purchase will have to be the proper stone to sharpen these chisels; the were quite sharp out of the box but I'm sure will dull quickly as well. At this price point, with free shipping, I think either the Jet or Delta would be acceptable. It's not exciting but it makes square holes. If you do a lot of M&T joinery or are making Craftsman furniture as I am (doing a bed this summer) it should be a real time saver. Otherwise, you may want to save the space and just use your router and a hand chisel to square off the ends. ... show more
Reviewed in the United States on May 2, 2008 by Viner 49er

  • Stop mulling it over, and just get one.
Style: Benchtop mortiser
I used to scoff at videos that went to their bench-top mortising station as it just seemed like throwing money at a problem that could be solved with a reasonable sharp chisel, and some skill/patience (I have neither). I have done probably close to 200 mortise and tenon joints by hand this way. I started a project that was going to have over 100 mortise and tenon joints, and decided I did not want to spend an entire week doing them by hand in my spare time, broke down, and bought this. It is now my favorite tool in the shop. it benefits greatly from set up and fine tuning, and will never be as clean as hand cut... but sweet jesus it makes things happen so much faster. Once setup you can clear a 2 inch mortise to any depth in a minute. ... show more
Reviewed in the United States on April 12, 2018 by Kevin

  • This is a basic mortiser
Style: Benchtop mortiser
As received, the compressed gas cylinder kept popping off its connection at the top. The manufacturer replaced both the cylinder and the connection. This resolved the problem. One of the reasons I picked this unit was the promised ability to rotate the unit to handle long boards needing a mortise on the end of the board. The unit design actually makes this difficult because the rotation has to be 180 degrees. The impact is that either the unit has to be installed on a pedestal or skidded on a board that can also be rotated 180 degrees. With creation of a home made jig I have made this work but not without a lot of effort. The adjustment provided for positioning the board is coarse and tightening the lock screw actually moves the board so you have to keep adjusting to get it to be aligned where you want it. Bottom line, the unit works and gives clean square holes. It also weighs less than some competitive units. The price is reasonable for an entry device. I have successfully used it to build a table. But...it might be better to spend a little more to get better functionality. ... show more
Reviewed in the United States on August 26, 2020 by Steve harper

  • Very impressed
Style: Benchtop mortiser
I typically don’t write a review on the first day but…. From the first sight of the arriving package to the results of the first test, I have been extremely impressed. The instructions were easy to follow and in American English. All parts were heavily oiled and well packaged. Once assembled I admired the features; the doubled clamps on the main tub and double alignment screws both of which could have been accomplished with one clamp and screw each. The first test was inspiring. I’ll be looking to JET for future equipment acquisitions. ... show more
Reviewed in the United States on March 18, 2026 by Chuck Clovis

  • This is a really fun tool to use
Style: Benchtop mortiser
Morty and I are getting along fine. Right off the rip I used a Fisch Hollow 5/8" bit instead of the three gimme-bits cause you tend to get better results when you use better steel. I read all the people complaining about the hold down, and I kind of get it, but not really. It was a simple thing to add extensions by drilling/tapping some feet on the hold downs and putting some rubber bicycle handlebar end stops on them, so if that is the worst problem this machine has, it is gonna be fun living with Morty. My thought is to not use this for building furniture, but do some puzzle boxes and make a nice gun rack using square ebony pegs on a semi-rough tulip poplar board, things like that. This machine makes my ham fists into virtuosos when making a square hole as I am not gifted with a chisel in making it do what I want it to do. The bit makes noise when not cutting since the chisel and the bit are not really aligned in a super precision manner, and even if they were it would still make noise. I spray on some dry lube like moly-mist and it is good for a while. Once the bit breaks in a little, it will probably be fine. The machine is quiet-ish and the MDF base is awesome for those of us who like to make through-mortises. Yeah, this is a major splurge, but the ability to cut square holes is awesome. It was either this or a small lathe, and this doesn't take much space. I am really pumped on this tool. ... show more
Reviewed in the United States on June 8, 2018 by Douglas Taylor

  • looks like it was meant to do some work
Style: Benchtop mortiser
I just purchased the jet mortising machine through amazon.com. I recieved pretty quick witht the free shipping. I had it set up in about 15-20 minutes and did some test holes. I was expecting to hear alot of noise but it was real quite, a big plus for me. I bought it to use in the making of my baby cradles. I think this guy will be with me along time. Just doing the test holes I could tell that I made the right choice with this one, I didn't see where I would have any problems with the hold downs like the reviews on some of the other brands were written about. I guess only time will tell. I can not complain on my purchase, the price was right and the free shipping was perfect. These reviews are great, they help me make my choice on this purchase, thanks to everyone that took the time to write them. Good luck to those that are looking for one. ... show more
Reviewed in the United States on October 28, 2003 by DANNY PINEDA

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