CNCTOPBAOS K12-100mm CNC Router Milling Machine Rotational Axis A 4th Axis Rotary Table 100mm 4 Jaw Chuck Dividing Head,MT2 65mm Tailstock Reducing Ratio 6:1 for CNC Engraving Machine
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Availability:
In Stock.
Arrives
Monday, May 4
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Style: Style-4th-A
Features
- Specifications of 4th Axis: Center height: 65 mm/2.56 inch; Total height:; 115 mm/4.5 inch; Angle: 0.3/step ; Reduction ratio: 6:1; Base Material: Aluminum alloy; Size: 210x168x115 mm/8.3x6.6x4.5 inch; Weight: 7.9 KG/17.4 LB; Inner through hole diameter/shaft hollow diameter is 22 mm/0.86 inch; Output shaft diameter:30 mm/1.18 inch
- Nema23 Stepper Motor: Phase: 2 Phase; Type: Hybrid; Step Angle: 1.8; Current: 3.0A; Holding torque: 270oz-in/1.8Nm; Shat diameter: 8mm; 4 Lead Wires: A+ to Red ; A- to Green ; B+ to Yellow ; B- to Blue; Motor Size: 57x57x76 mm
- Specifications of MT2 Tailstock: Morse Taper 2 Live Center Movable MT2 Tailstock; Center Height: 65 mm/2.56 inch; Expansion stroke: 45 mm1.77 inch; Stretch distance: 50 mm/1.97 inch; Top tip: Activity type; With Axial locking wrench for tailstock; Exquisite workmanship,Durable,Stable performance,Sturdy and Wear-resistant; Weight: 2.5 KG/5.5 LB
- Chuck Type: K12-100 4-Jaw self-centering chuck; Diameter:100mm; Max input torque: 60 N.m; Max Speed: 3500 R/min; External jaw clamping range: 30-80 mm/1.18-3.15 inches.; Internal jaw clamping range: 2-30 mm/0.08-1.18 inches; Internal jaw jamming range: 30-90 mm/1.18-3.54 inches; With four Anti-claw and Wrench
- Advantages: Rust proof coating process,stable 4 jaw chuck structure,fine workmanship,solid and practical jaw, excellent process to maximize service life;Application: The fourth axis can be used for three-dimensional processing of cylinders, bends and circles. The fourth axis engraving machine can be used for engraving spirals, scars etc
Brand: CNCTOPBAOS
Material: Aluminum
Item Diameter: 100 Millimeters
Item Weight: 10.23 Kilograms
Compatible Devices: Milling Machine
Brand Name: CNCTOPBAOS
Manufacturer: Changzhou Rattm Motor Co.,Ltd
UPC: 785004502711
Manufacturer Part Number: S23
Model Number: S23
Compatible Devices: Milling Machine
Thread Size: K12
Capacity: 100 Millimeters
Lock Type: Self Centering
Handle Type: hand-tightened
Item Diameter: 100 Millimeters
Item Weight: 10.23 Kilograms
Material Type: Aluminum
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, May 4
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Style: Style-4th-A
I received a new 4th. Axis from the seller, and this one works fine!...Kudos to the seller for sending me a new one even when I was out of the Amazon’s return window. After I opened the box and manually tested it I realized that the new one was able to spin without much effort, opposite to the first one I got that it was hard to rotate, but since I didn’t know what to expect I thought it was fine and hard to rotate due to the stepper motor (I didn’t remove it). So here is my recommendation if you get one of these: Recommendation Once you receive your package, unscrew and remove the stepper motor (completely), as if you were trying to adjust the belt tension; this shouldn’t void your warranty as you should be able to adjust the belt any time and this is not opening the spindle. Now and without the stepper motor, manually rotate the spindle/chuck; the spindle/chuck should rotate freely, without much effort but not as a skateboard wheel; great if does. Even if you feel a small amount of friction it should be fine as it should be normal on these spindles/chucks. If you have a hard time rotating it (and hear something like a clicking sound) then you should be considering exchange it. Hope this helps. Note: I’m leaving my original comment below in case you were following… Original Comment: Disappointed!...The spindle it's barely turning and seemed to got stuck only after a few times using it. this happened right after my Amazon return window expired, so I contacted the seller for diagrams to see if I could open it and do some clean up or add grease, but they do not have any. The seller suggested to "hammer the inside four claws from the front to the back" but that seems radical and I'm not certain it will not damage completely the spindle. I have seen videos of other 4th axis that they have retainers/big nuts that you unscrew to open the interior, but this model has none; not in the back or in the front, and I have not found a site or video that shows how to open any of these models. Do not recommend. UPDATE 10/9/2019 The seller contacted me again and as there are no schematics available, then it's willing to help me solve the issue in a different way; by sending me a new product for testing and review, and have expedited the shipment. I'll provide new comments an possible update the overall rating once I have tested and reviewed the new product.
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Reviewed in the United States on October 7, 2019 by Amazon Customer
Style: Style-5th-B
Really nice quality for the price! The motion is very smooth, with zero perceptible backlash. Unfortunately, I did have to return it. No fault of the product itself, but due to unforeseen controller issues on my end. The unit is very difficult to backdrive, thanks to the 50:1 harmonic drive. The NEMA 23 motors may look small, but it's no issue, again, thanks to the drive ratio. If you ask nicely, the seller will provide you with a CAD file of the unit to help with programming.
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Reviewed in the United States on March 22, 2025 by Bill
Style: Style-4th-A
Not sure what the other reviewers are talking about there is a ton of backlash. Out of the box the belt tension is far too low. Even after adjusting that, there is way too much backlash to use this for a proper milling set up. Not sure what it’s any good for.
Reviewed in the United States on May 21, 2025 by Amazon Customer
Style: Style-5th-B
Very solid motor gearbox. I am pleased with the craftsmanship of this robotic joint and look forward to activating it in a robot arm.
Reviewed in the United States on October 27, 2025 by Amazon Customer
Style: Style-4th-A
Nice!!!
Reviewed in the United States on January 31, 2026 by Israel Montero
Style: Style-4th-A
Finally got around to hooking it up. The center is off by 40 thousandths! Don’t buy!!!
Reviewed in the United States on October 24, 2025 by Chuck webster
Style: Style-4th-A
1. The rotary axis and tailstock were nicely packaged. Very well padded with foam. 2. No detectable backlash or lateral slop. This item comes with a 3A motor, which is sufficient but my drivers are 4A so to make sure I do not overload the motor I swapped it out. Another person who purchased this item has a long windy YT video about all the gyrations he put himself through to swap out motors. What he SHOULD have done is read the motor physical specs. My 4A motor fit in with no alterations required. The only challenge I have is mounting the axis to my router bed. I wanted the style that has a bore through the spindle so I can do pass throughs on smaller diameter items. This style has to have the motor mounted to the side of the spindle, so it limits access to the mounting bolt slots. I will probably make a sub plate because I remove this piece of equipment often. This is not a default, just something to be aware of.
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Reviewed in the United States on January 8, 2024 by Kindle Customer
Style: Style-4th-A
I was able to swap the stepper to the other side to better work for my setup. I haven't used it a lot yet but seems to work as it should.
Reviewed in the United States on February 15, 2024 by John K