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Genmitsu

Genmitsu CNC Router Machine 4040-PRO for Metal Acrylic Cutting Milling, GRBL Control, Lead Screw Driven, 3 Axis Engraving, Working Area 15.7” x 15.7” x 3.1”

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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Jul 19
Order within 19 hours and 21 minutes
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Features

  • Structure Stability: Stability is enhanced with a new steel HSS frame. Each axis features two 16 mm Steel HSS linear tubes, lead screw motion drivers, dual Y-axis rails, and an all-metal frame.
  • Compatibility Upgrade: The 4040-PRO CNC machine is supplied with 42mm and 52mm spindle mounts, compatible with original spindles and 300W spindles. Additional 65mm (B0BRZSY475) and 69mm (B0BRZSVVK3) spindle mounts are also available for separate purchase.
  • Various Upgrade Accessories: Supports a 4th axis rotary module kit (B0C581H2B3), allowing the 4040-PRO CNC to carve from various angles or perform full 3D rotary carving with the right software. Enables a Wi-Fi module (B0DK54JHS6) for mobile control. Also you can upgrade the XZ-axis(B0DHGN4ZYH), strengthen the screw material, and improve stability and speed.
  • Easy Assembly: Main parts are pre-assembled, enabling setup in about 15 minutes. The spoilboard consists of two replaceable MDF boards, so you only need to swap the damaged one instead of the entire spoilboard.

Description

Increase your work output with faster milling and increased stability. Whether you're a CNC beginner, a hobbyist, or a small business owner looking for enterprise quality for commercial purposes, this is an excellent choice. Screw drives provide better positioning accuracy compared to belt drives, as they are less affected by elastic deformation and swing clearance. Additionally, screw drives are easier to maintain during use, eliminating the need for tedious belt leveling and offering greater durability. X-Axis Extension Kit Y-Axis Extension Kit 2040 MDF Spoilboard 2060 MDF Spoilboard 2040 Hybrid Spoilboard 2060 Hybrid Spoilboard 4060 Hybrid Spoilboard Genmitsu 4040-PRO Genmitsu 4040 Reno Genmitsu PROVerXL 4030 Genmitsu PROVerXL 4030 V2 Other CNC Machine Other CNC Machine You can find detailed instructions in the SainSmart Resource Center (see User G u i d e). Besides, we have a CNC community, you can get help from others in it. What's more, our customer support team is always ready to assist with any questions you may have. Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Here at SainSmart we have been serving the maker community for years, starting in the early days with high-quality electronic parts and into today with our Genmitsu line of CNC mills for every experience level. We love making, we are just a bit different than the people we make our products for. Our passion is making the best, most affordable tools available and getting them out to the maker community at large to do their thing!

Brand: Genmitsu


Material: Aluminum, Acrylic


Power Source: ac_dc


Voltage: 240 Volts


Item Weight: 20.84 Kilograms


Power Source: ac_dc


Voltage: 240 Volts


Base Type: Fixed


Battery Description: Corded electric


Material Type: Aluminum, Acrylic


Item Weight: 20.84 Kilograms


Brand Name: Genmitsu


Model Number: 4040-PRO


Global Trade Identification Number: 43


UPC: 816550026243


Manufacturer Part Number: 4040-PRO


Manufacturer: Genmitsu


Included Components: CNC Machine


Unit Count: 1.0 Count


Item Type Name: CNC Machine


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 19

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

    • A great machine at a great price
Setup was quick and very easy, this is actually the second I purchased because I like the first one so much. It is very user friendly even if you’re a beginner, it produces professional quality results. I purchased upgrades for this machine to include x and y axis extension and routers as well. I had one issue with one of my offline controllers but customer support was excellent and quickly replaced the defective controller. I am impressed with the quality of machine you get for the money, their customer support is also top notch. I did my first carve right after I received and assembled my machine, it performed better than expected, lower noise level than other machines I’ve used, the carve was very precise and detailed and the machine is very solid with no detected play I. Any of axis. ... show more
Reviewed in the United States on September 2, 2025 by Shannon Walton
    • Buy this not a Fox Alien rubber Band CNC Buy this not a Fox Alien rubber Band CNC
Review Image by Timothy Maggenti
I LOVE THIS MACHINE! This is the best machine for the money on the market period. Here is my story. First I bought the Fox Alien rubber band CNC which was a huge mistake. I was busy with other things so it sat there unused until I got to it. I found out the motherboard was bad, they replaced it and quickly, they even gave me their new 1/4" bit set as a sorry for the issue, which was nice. Then I tried to cut 1/8" cast acrylic plastic and it would not cut it! I added 5 passes to cut 1/8" plastic, and it still would not cut it. Meanwhile I am emailing them asking how to fix this. Their rubber bands would skip and destroy every cut I tried to make. I finally gave up and they would NOT give me my money back on their product. So I bought the Genmitsu 4040 Pro for less money. No rubber bands, just solid metal screw drive. Same exact stepper motors and this thing is a beast. I surfaced my cutting board since the Fox Alien destroyed it. It cut is so smooth it is like a mirror finish. I love this machine. It will cut and it is so accurate, I love this machine. Yes it is not as fast as the Fox Alien, but who cares, it actually works, it cuts and anything. If it fits into the machine it will cut it. Obviously you have to work within limits but this is a beast of a machine. I love it period. Yes I relocated the power to underneath it so I did not break it off, not sure why they have it sticking out the side, but who cares. This thing works so good, get one you will be happy you did. ... show more
Reviewed in the United States on June 14, 2023 Reviewed in the United States on June 14, 2023 by Timothy Maggenti
    • Great hobby machine
Bought this to dip my toe into CNC. I've used it mostly to carve catcall trays, trivets, and cutting board stands using small bowl bits and end mills. Nice to turn this loose on a job while I do another things in my hobby shop. Assembly took me about 30 minutes. Tools to assemble where included, as well as some 30 degree vBits and some spare parts like extra homing switches. Documentation was easy to follow and all parts in the included container were labeled. The machine feels sturdy. The included spindle has ER11 collet, and I think the included collet insert was 4 mm? I purchased a 1/4 collet insert so that I could use bits that were more available to me. I've since upgraded the spindle to a Makita 701C router, which it handles just fine, just have to be aware that this isn't going to cut at 200+ inches per minute- i think max speed is like 78 inches per minute and I hesitate to push it that hard. For what I've used it for, it's been great. It's now a fixure in my shop, I've built an enclosure for it, added the dust boot, and plan to add the hybrid spoil board in the future. 4 stars because I don't see many spare parts for it on Sainsmart's website. Things like backlash nuts will eventually wear out and I'd prefer to go to the manufacture to get the replacements instead of hacking something else in there. I've had it for 3 months now and that is my only complaint. ... show more
Reviewed in the United States on February 17, 2024 by Amazon Customer
    • buyer beware
The machine has a good frame construction but I have had nothing but problems beyond that. I have had more projects that have been ruined because the macine will suddenly lose it's vector orientation. I have replaced the controller board multiple times and the issue persists. I am going to try to replace the limit switches and if that doesn't resolve the issue I will have to wire trace the every wire to see if there is a short in the system. I would not recommend this product and I would say spending the extra money for a Shapeoko 4 or 5 is the better choice. ... show more
Reviewed in the United States on June 3, 2026 by Jason Dunn
    • Great little hobby machine
I purchased this machine on cyber Monday in 2023. I was looking for a CNC that had more stability, accuracy and repeatability than the belt driven machine I currently had at the time. I wasn't disappointed. The packaging was about the best I've ever seen, assembly was a breeze and it was square and level right away. The screw drive and linear rails make this quite rigid and reliable. I used it for about ten months when it stopped working. After contacting customer support and describing the symptoms it was determined that the power supply went bad. They sent me a new one free of charge which solved the problem completely. I can't say enough good things about the machine and level of support I received. ... show more
Reviewed in the United States on October 10, 2024 by papas5
    • Decent beginner machine
I received the machine in good condition, the packaging was superb,. unpackaged and assembled, clear directions. took around 30 minutes to set up. the software (Candle) that came with it is a bit lacking, but I use G-sender and V-carve Pro. This is my first desktop machine, so I am going to try my best to capture everything I have experienced so far. Pros: Good quality main frame, pretty stiff for a desktop Good packaging Great customer service Easy to assemble with easy to follow instructions Very quiet Cons: Extremely underpowered, most bits require 12000 or more rpm to work in optimal range, the spindle is only turning 9000 Upgrade parts are almost as expensive as purchasing a new machine( spindles, extensions Etc.) would recommend the 1.5kw VFD spindle or trim router if you will be carving anything thicker than 1/4" pine. The stock spindle struggles to cut though on profile settings, deep v-carves and 1/4" clearing pocket cuts. V-bits and End mills that have a 1/4" shank are unusable with the stock spindle. Very little adjustments to correct Tram and squaring Final thoughts: The machine advertises that it can cut wood, metal, acrylics and other soft materials, what they don't tell you is that the machine will not cut smoothly with 1/4" bits or anything thicker than 1/4" and that is testing the limits. All in all, it is a good starter machine, a little pricey for beginners, but bear in mind this isn't a commercial machine, if you are doing small carves with minimal depths this is a great machine. If you are seriously trying to carve heavier materials look to the more robust (and more expensive machines). If I can afford to purchase the 1.5kw VFD spindle I will return and revise the review. If Genmitsu/Sainsmart would like to donate the spindle set up, I will put the machine through its paces again, and give another review with the upgraded machine. ... show more
Reviewed in the United States on May 24, 2024 by william s.
    • Great inexpensive cnc for hobbyists
This little CNC is great. I can do a lot of work using different CAD systems to create designs. I especially am enjoying a monthly subscription with Carveco that gives me access to a lot of good tutorials for producing lots of different designs, including things like inlays. I’m also using auto cad fusion 360 with good results. The one suggestion I have is that the provided spindle is pretty weak. I replaced it with a water cooled 2 hp spindle from Amazon and it can cut through anything. The carriage and drives seem to be very sturdy and allows me to get good cuts even with the larger spindle. I’ve also found that sainsmart customer service is great and very quick to send parts if needed. ... show more
Reviewed in the United States on February 14, 2025 by Jeff
    • Great!
Wrote wrong review on wrong machine. This machine works great!! Always has.
Reviewed in the United States on June 17, 2026 by Used one time. Doesn’t work very well. Second time I tried everything and it just would not get the suction needed to clean.

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