






🧵 Sew Strong, Sew Fast, Sew Smart — Your Ultimate Heavy-Duty Partner!
The SINGER Heavy Duty 4423 Sewing Machine combines a powerful 60% stronger motor with a heavy-duty metal frame to deliver professional-grade sewing at up to 1100 stitches per minute. Featuring 97 stitch applications, an automatic needle threader, and a comprehensive accessory kit, it’s engineered for both thick and delicate fabrics. Ideal for creative professionals and serious hobbyists seeking speed, durability, and versatility in one sleek, reliable machine.
























| Best Sellers Rank | #2,842 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #8 in Sewing Machines |
| Brand | SINGER |
| Color | Grey |
| Customer Reviews | 4.5 out of 5 stars 21,453 Reviews |
| Item Weight | 17.1 Pounds |
| Material | Plastic |
| Power Source | Corded Electric |
| Product Dimensions | 6.25"D x 15"W x 12"H |
R**G
Perfect Workhorse for My Small Business!
I absolutely love my Singer Heavy Duty 4423! My sister and I bought one each and they arrived in just a couple days. As someone who sews for a small business, speed and reliability are everything—and this machine delivers both. The high-speed stitching helps me get more done in less time, which makes a real difference in productivity. It handles heavy materials beautifully—no hesitation at all with multiple layers of canvas or even faux leather. The motor has impressive power, and I’ve never had to fight with the fabric. I also really appreciate the extra lift on the presser foot—it’s such a small detail, but it makes positioning thick fabrics so much easier. Overall, this machine has exceeded my expectations. It’s sturdy, fast, and efficient—exactly what I needed. No regrets whatsoever! Highly recommend it to anyone who works with heavier fabrics or just wants a reliable, high-performing sewing machine.
C**.
Works great
Bought this sewing machine for my wife in 2017. Still going strong!! She loves it. Very easy to use. Stitch quality is good. The bobbin winder stopped working so I bought a cheap bobbin winder that took it's place. Other than that, it works flawlessly
J**.
Tips for success... How NOT to throw the Singer 4423 through a window.
There are a lot of reviews here of people frustrated with the Singer 4423. I was going to purchase this machine back in November, as I needed a machine to handle automotive upholstery and other heavy fabrics. I hesitated on buying because of less then stellar reviews. An Amazon lightening deal changed my mind, as the price was under $100. I received my item well packaged and expediently (thanks Amazon). The directions that come with it are not great, but get the basics covered. I utilized the internet for more detailed instruction, and well as for video guidance. After using the sewing machine for several hours, I too became frustrated. So much so, that I initiated a return. It seems I could not get the thread tension correct, and I would end up with tons of bobbin jams. Nobody wants their bobbin in a jam. After sleeping on it (not literally), I researched more on the internet. I found a few tips that not only helped, my project turned out great and I was able to use the 4423 effectively. My Tips: 1. Use the felt bobbin spacer if the bobbin is racking in the bobbin case. 2. Important. Use only the plastic - not metal - bobbins. 3. Make sure you thread correctly. Thread tension is critical and is managed at loops #3, #4, and #5. When threading, be sure to give a slight tug to ensure the thread has seated into the blind tensioner. Also don't forget to run the thread behind the guide #6. 4. This might seem obvious, but be sure to drop the presser foot. It's easy to forget especially when setting up thicker fabrics/upholstery. If you forget, you'll know soon enough, by having a mess under the fabric on the bobbin side. 5. Practice with the foot control. It launches from 0 to 60 in a split second. I'd like to find a way of better control here, as fine control is challenging. 6. Use the correct needle size. Mine shipped with a 90/14 which is good for many things, but I recommend a 100 for thicker stuff, like chihuahuas and small pets. Just kidding about that small pet crack. I gave this machine 5 stars solely because for the money (<$100), it was a no-brainer. I'd give it 4 stars if priced in the usual $125- $150 range. It's not perfect, as the foot control is too sensitive (like my wife). But it is a well made piece of equipment that CAN handle heavy fabrics. It went through 6 layers of vinyl upholstery as well as plastic piping, without struggle. I did find that best results were obtained when the needle is started manually in the thicker, multi-layered fabrics. Stitch patterns seemed to work okay, but I only did some messing around with them, just to see if they worked. I really only used the straight, and zig-zag with frequency. One other thing, the machine is light, which is good and bad. Good, as it's easy to transport, but bad as it will move when pushing heavy stock through it. Use a rubber mat, or better yet an appropriate table.
F**S
A Good Basic Machine...
I bought this machine because I had an older Singer Sonata (looks like it may have come out in the 80's) that was acting up. It seemed like it was time to replace or repair it. Sadly, repairs would've cost $100 or up, and after looking around at new sewing machines, it seemed prudent to just get a new one. So, after looking around, I settled on trying out the Singer 4411 despite it having a less than stellar review average. I like the fact that the 4411 is a manual machine (call me a control freak!) and that it's heavy duty. I don't use my sewing machine for a whole lot except hemming blue jeans and the occasional pillowcase repair, so I really just needed a solid dependable basic machine. When I first got my sewing machine in the mail and took it out of the box, I noticed that the needle didn't seem to be properly centered. This freaked me out quite a bit. Was my new machine already flawed?! Well, no. I discovered that you need to set the stitch width dial to zero for straight stitches. This moved the needle to it's normal center position. This is mentioned NOWHERE in the manual. Speaking of the manual...it's not too good. It's very "basic" (read: lacking), and frankly, if I didn't already know a fair bit about sewing machines, I'd be very confused. First off, you need Class 15 bobbins for this machine (which it seems to come with) but this isn't mentioned anywhere in the manual that I could see (it is on the side of the box though). Also, the needle clamp screw was tightened insanely (I had to use pliers to get it to loosen up), and the manual appears to tell you to move it the wrong direction to loosen it. Turn it TOWARDS you to loosen. Also, in case it isn't clear in the needle threading section, you need to loop the thread through that last little spot right next to the needle (I have an older machine that has a very similar threading procedure, so I recognized this pretty quickly, but others might not notice it since it's very subtle). Once you actually get the machine figured out, it seems to work quite well. I wound a bobbin perfectly, with no problems. I threaded the needle with no problems as well. All the wheels and knobs seem to work with no problems. I will mention that the light bulb is very dim, so you'll want to work under your own lamp. That's not really a big deal though. The very first thing I tested the machine on was some thick cotton, about 3 layers thick. Not a particularly difficult thing, but it had some seams in areas that made it quite a bit thicker (more like 6 layers thick in those areas). The machine ran right over them with no problems. I didn't notice the machine being particularly noisy or anything (but maybe I'm used to sewing machines making noise). Next, I put it to a more challenging task, sewing two layers of ½ inch thick batting onto comforter fabric. It did well enough, but you may need to loosen the tension a bit if you are having problems. I haven't really tested the button hole maker (don't need to use it) but I did try out some of the fancy stitches that came with it. Honestly, out of the few provided, only one looked decent. So, this truly isn't a machine for anyone who needs more than the basic straight and zigzag stitches. As for the accessories that came with it, they seem fine enough. The bobbins appear to be Class 15 (as needed but not specified). Also, you should be aware that even though it appears to come with different needles, all the needles that came with mine were medium size, so if you need another size, you're going to need to buy some separately. Not much to say about the rest, other than that the seem ripper seems a little dull... Overall, this is a good machine, and seems solid. As for it's label of "heavy duty" I'd say it might be a bit of a stretch. I haven't actually put it to the test, but judging from other reviewers, it isn't truly "heavy duty". If you just need to hem some jeans, it should work fine though. Really, I'd recommend this machine to anyone who just needs a cheaper basic level machine of decent quality (just ignore the "heavy duty" part and you'll be fine). If you're like me and just need a machine to hem a few pants and make a few pillowcases, this'll take care of your needs just fine! *Note: The first machine I bought was defective - the tension would not tighten no matter how much I turned the knob and the bobbin would wind all unevenly. I returned it to Amazon and had it replaced with a new unit (the one I have now) and this one seems to work just fine. This review is actually for the second machine I received, so if you get one that doesn't perform properly, be aware that it could be defective, and don't give up on it just yet!
M**Y
Doesn't cost an arm and a leg and it works wonderful
I've sewed, for over 50 years this is still by far one of the best sewing machines, works great on denim, works great on most material, makes buttonholes what more could you ask for plus you got all the fancy stitches I did have a 4432 but I sent that back the first one I had problem with And after I talk to the person that fixes sewing machines I asked him which model and he said I definitely would go with this model 4423 very very pleased with it, in Amazon of course stood behind it you can't beat that.
K**R
Don't change any settings at first - use the settings as shipped
I have had a second hand machine for years that never worked properly, the tensions couldn't be balanced, the speed was difficult to control. I learned how to sew on my mother's Singer and I longed to get one for myself, but back then sewing machines were more expensive and I didn't sew enough to justify it. I sewed less after fighting with mine for so long. Plus my mother had eventually replaced hers with another brand with a lot of fancy stitches. She used it for a couple of years but began to sew less as it started giving her a lot of trouble. She eventually dug out her 30+ year old Singer and began sewing again. I read several of the reviews of a few machines and I was convinced that getting a Singer was still what I wanted for several reasons. One is that Singer machines' thread tensions are more reliable. Many other machines have the thread go from spool to needle through no more than 4 catches. This Singer and most others I've seen have 7. Similarly the bobbin thread is held better as well. This keeps thread control and tension more consistent. I read some reviews for this machine saying they had problems straight out of the box or after only a short time. It makes me wonder 2 things - whether they changed settings like tensions before starting to sew on a scrap to get used to the machine or whether they purchased from a marketplace seller. The first thing I did was to thread the machine with standard thread and leave all settings as is (I wasn't going to need to anyway unless I didn't like where they were set after using it) then I ran a scrap through the machine to see how it felt. What a dream! It was quiet, it was easy to control the speed (it didn't jump from 0 to 60 like other non-Singers I've used), and the stitches were beautiful. The thread tensions were perfectly balanced. After practicing with it a little I began my project and was off and running without having to stop and unsnarl thread or struggle with thread tensions that wouldn't stay set. I can't understand how much trouble some people seemed to be having. One thing I mention here, I purchased the 4423 because I wanted a machine that could handle heavy fabrics, and had a variety of stitches for basic products. I didn't need 100 types of stitches or a computer for a sewing machine. I am fine with the basics. If I decide to put someone's name on a project, I'll embroider it by hand. I don't do all that much sewing any more. I do really wish I had replaced my hunk-o-junk 20 years ago right after my sister-in-law traded me for the machine I had inherited from her mother - it didn't work all to well either but she didn't like her 'new' machine. I found out why. I also wonder whether some people who wrote bad reviews purchased their machines from the marketplace. I have purchased some items from there when needed, but I and others have had problems with using them. Primarily in their definition of the word "new". If someone returns an item within the 30 days or whatever and claims it is in new condition some sellers don't check the contents to confirm. Instead they sell it to the next person. So blankets arrive not factory packaged and with obvious stains on them. The purchaser returned it because they didn't like something about it, hadn't broken it but had definitely taken it out of the box and used it. Why the seller didn't examine the blanket to be assured it was in new condition I can't say. But I say buyer beware if they buy from the marketplace and not from Amazon. Some marketplace sellers sell their own products so don't fall under this category, others are just retailers shipping through Amazon. Some aren't very professional. Don't blame the product without first being sure that you didn't purchase one of these "new" products that had actually been a return that should have been marked "like new". And don't twiddle with it before seeing how it performs straight out of the box! All I can say is I LOVE this machine. It works almost exactly as my mom's old Singer. Singer has kept to the old adage that if it ain't broke don't fix it. Their basic machines are virtually unchanged from one's produced 50+ years ago. Oh they look different, but that's just like putting on a new dress, the person in the dress is the same. Sure they have the more advanced machines, ones they pioneered. But even those are built on top of the old reliable machine. If you have a problem that is a defect, find out right away and get a replacement. Don't wait on any purchase, sewing machine or other items, to try it out to see if it is in working order then blame Singer for not replacing it. Every company can produce a defective product that made it through quality control. It is up to the buyer to do their own checking to be sure they got a product in full working order. These sewing machines now are so much less expensive that even if you do get one that breaks down, purchasing a new one does not burn a hole in your wallet. 20 years ago some of the machines I looked at would have cost $1000! Be happy you aren't shelling that out and getting the junk I've been using that cost $850! And it is just as basic as the one I just purchased! And a word for beginners - yes there is a manuel and yes it's easy to learn on. Even without the manuel someone with minimal experience can easily see how the different features work. They are clearly labeled. Anyone having problems has never used a Singer or other machine that isn't complicated to use. They look for complexity where there is simplicity. I have only had this machine a short time, but I can say that even if it starts giving me some trouble, it would have to literally break to be as bad as what I've been using. I wish I had talked my mother into giving me her old Singer! But I feel as if I just did. The color is different, but it's the same machine.
L**I
Good machine so far!
I have only had the machine a week, but I know what quality is. I read as many reviews as possible before any purchase - anything over $30 I do that anyway. The multi-lingual "document" that arrives with the machine really isn't much help, for the beginner or the experienced. Other than repeat warnings to not leave it plugged in when not in use, it is mainly safety stuff. (Keep your fingers away from the needle! Simple and basic) The threading diagram and bobbin winding diagrams were a help, but the threading pathways are labeled on the machine. I have almost 50 years of experience with Singer and other sewing machines so I did not need much tutoring. A troubleshooting guide, like what came with my last machine would have been nice, but really its easier to YouTube how-to and the troubleshooting anyway. I was glad to read INTHE REVIEWS that the type of bobbin that this model 4423 takes- a clear plastic class 15 bobbin. NOT 15J, only class 15. Not metal. The machine came with one bobbin as the top thread and one inserted properly in the bobbin case, plus 2 spare. Be sure to check the stitch width and other settings before you start. Use zero for the width (mine was set at 4, don't use that) The center little indicator for the other 2 dials is best left alone (tension, etc) at the midpoint that is indicated by a TINY arrow. When you do sew, just like some other machines, hang onto your thread ends as you begin to sew, particularly if you are starting at a corner. If the threads get balled up under there, it's a mess. My mother's 1970's Singer machine used to do the same thing. It becomes a balled-up mess under there. It sews over thick seams like blue jeans have and does well. I did break a needle already- but I was replacing the zipper in my jeans and it was the last set of tack stitches at the bottom. I have only ONCE successfully sewn across in that area without breaking the needle, so no news there. Last piece of advice- practice on scraps so you can get a feel for using the foot pedal first! That thing is lightweight, and sensitive too. 0 to 60 in a leap! This is my 4th machine in 40 years, but I sew a lot and mend a lot. (Not made like they used to be made, but nothing is.) Nice touch to include a lightweight dust cover, and the right tools. I rate it overall 4.5 stars.
S**C
Serious quality issues!
This was my go-to workhorse for 25 years, now they are garbage. I have been extremely loyal to Singer, and these machines in particular. I sew professionally for my business. I have been using the Singer Heavy Duty machines since the beginning. I appreciated the speed and simplicity of these machines. I only use these machines for straight stitching with a twin needle. I know how to trouble shoot problems when they occur. I'm a pro, especially on these machines. I use these machines for about 10 hours per week. That isn't excessive. I properly oil and clean them, replace needles often, know how to spot a bad bobbin or bobin casing, use high quality thread, and fully understand how to adjust tension. I am a master at using twin needles. These machines would usually last me about a year, then when they start giving me problems, I simply donated and replaced them. They aren't expensive, so it is more cost effective to replace them than service them. I loved their SPEED. They are fast. But after a week, they are noisey. I can deal with that. I have already purchased two Singer Heavy Duty machines in the last 2 months. The first one was garbage. It constantly gave me problems, so I quickly returned it and bought another. The second machine is no better, it is also garbage. Thread constantly breaks and nests under the fabric, and needles keep breaking. These are the exact same problems I had with the machine I just returned. Experienced sewists may say, "Hey, you're using twin needles! That's the problem! They are always problematic". I'll respond by saying I have been doing this for 25 years on these machines with minimal issues. SOMETHING HAS CHANGED. Having one bad machine could have been a fluke. Two in a row in less than two months? That's a sign that Singer QUALITY has drastically gone downhill. Yesterday, I finally got to the point where I couldn't do ANYTHING with this machine. I changed the bobin casing, needle, and carefully wound a new bobbin with NEW thread. There was no dust, lint, or loose threads in the machine. The needle wasn't bent or dull. I could find absolutely no reason for the problems I was having... the same as with the last machine. These machines simply don't seem to have the quality that the prior Singer Heavy Duty machines had. I can't afford down-time, and I wasted the entire day trying to sort this issue out, without success. So I decided to just switch to a different brand and had a new machine delivered today so I can get back to work. I'm not leaving this comment to plug another brand. I'm just trying to show how frustrated I am that the quality of the machines has degreaded so much over the last year. After some research I decided on a Necchi machine. I wanted to keep the cost down because I do consider these types of machines to be semi-disposable after a year or so, and I wanted the same sewing speed. It arrived today and it works PERFECTLY on a straight stitch with a twin needle. I used it for two hours without the slightest hiccup. I am also AMAZED at how much quieter it is than the Singers! To compare the noise difference, the Singer is a baby crying in the middle of the night and waking me up from a deep slumber, while the Necchi is like a baby cooing in the middle of the afternoon. The Necchi isn't quite as fast as the Singer although the both claim 1100 spm. Only time will tell how well it holds up. But, so far I'm pleased. In a nutshell, these Singer Heavy Duty machines are not your "granny's Singers". Singer was always my go-to choice, but now they have serious quality control issues. I'm not sure I could go back to Singer again.
Trustpilot
3 days ago
2 months ago