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Befenybay

2PCS 5mm to 8mm Aluminium Plum Flexible Shaft Coupling D20 L25 Connector Flexible Coupler for CNC Machine and Servo Stepped Motor（5x8mm）

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Oct 27
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Size: D20 L25


Style: 5-8 mm


Features

  • Size:L25mm x D20mm/0.98inch x 0.79inch( L*D) Diameter: 5mm to 8mm / 0.19inch to 0.31inch
  • Material: Aluminum alloy, polyurethane Type: Plum shaped
  • Super torque can absorb vibration, appropriate a large torque transmission.High hardness,and excellent response,not easy to loosen
  • Flexibility of coupling shaft removes stress between the motor and driving components
  • The shaft couplers are mainly used for CNC machines,servo motors, spindle, step motor etc

Description

1.Aluminum alloy 2.The Shaft Coupler is not elastic 3.Shaft must be located in a straight line 4. If your equipment is eccentric already, then it will make noise and cause off-centering 5.The shaft couplers are mainly used for CNC machines,servo motors, spindle, step motor etc Specifications: Product Name: Shaft Plum Coupling Type: Plum Shaped Shaft Usage: 5mm to 8mm / 0.19inch to 0.31inch Size: :L25mm x D20mm/0.98inch x 0.79inch( LD) Material: Aluminum Alloy,Polyurethane Main Color: Silver Tone,Red Weight: 30g Package Content: 2x Shaft Plum coupling 1x Allen Key Any question or problem, do not hesitate to contact us. we will reply you within 24 hours

Material: Aluminum


Fastener Type: Coupling


Thread Size: M5


Exterior Finish: Silver


Color: Silver, Red


Fastener Type: Coupling


Thread Size: M5


Exterior Finish: Silver


Color: Silver, Red


Thread Type: Iso Metric


Inside Thread Size: M5


Thread Style: Right Hand


Thread Coverage: Unthreaded


Thread Class: Class 2A


Screw Head Style: Flat


Compatible Groove Diameter: 8 millimeters


Drive Style: shaft coupling


Grade Rating: Industrial


Item Weight: 30 g


Size Name: D20 L25


Item Diameter: 0.31 inches


Outside Diameter: 0.31 inches


Brand: Befenybay


UPC: 824007172184


Set Name: Befenybay 2-Piece Aluminum Shaft Coupler Set with Allen Key


Manufacturer: befenybay


Number of Packs: 2


Unit Count: 2 Count


Model: BE011


Number Of Items: 2


Part Number: BE011


Material Type: Aluminum


Metal Type: Aluminum


Finish Types: Silver


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 27

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Similar Products

Top Amazon Reviews

    • These are awesome! Much better than competitor's design.
Size: D20 L25 Style: 5-8 mm
Review Image by Mark S. Lawler
For some reason the flexible couplers milled from a single piece of aluminum tend to shear on my DIY CNC machine on both the X and Y axis. I've tried different brands and suppliers, including the one in the photo, with the very same results. Within 6 hours of run time it breaks on the simplest of carves, ruining my workpiece. As you can see in the photo and the pictured break, one has to question the mill stock used vs. who mills these from that stock. However, since changing to this 3 piece design, I've been running fine without any issues or mid-carve failures!!! Thanks! ... show more
Reviewed in the United States on October 14, 2020 by Mark S. Lawler
    • So far so good
Size: D20 L25 Style: 5-8 mm
They seem to work. Hard to test it. You have to take the Z rods out all the way to get it to go in. But that's a good time to clean them. The fitting is very loose at first and the screws are very hard to turn. I thought I was going to strip it. Then finally it turned and tightened. I thought I had the wrong size at first. ... show more
Reviewed in the United States on April 2, 2022 by PhotoKing
    • Helps with misalignment and prevent disasters.
Size: D20 L25 Style: 5-8 mm
I bought these couplers to replace the horrendous ones that came with the Biqu B1SE, as well as on an Ender 3 I had (which to be honest didn't need replacing, but I had a two pack so I threw it on). This style of coupler provides a couple of advantages: -The set screw clamps the coupler around the leadscrew, rather than screws directly into the leadscrew. The stock B1SE coupler has a pair of setscrews that go directly into the leadscrew, and not only did this mean that you can never properly center the leadscrew (because you had to clamp setscrews into it from both sides), but that it also came loose quite often. Nevermind the fact that it can damage the leadscrew itself. The Befenybay couplers required only tightening one set screw and that was it- no fuss and never came loose again. This alone fixed a major pain point of that printer. -The design compensates for minor misalignment. If your leadscrew is extremely bent this probably won't fix any Z-problems you have, but for minor misalignments they can and do work very well. Again, the B1SE has a very long leadscrew which has a very slight offset between the gantry and stepper; this is incredibly obvious because the leadscrew is not parallel to the vertical extrusions and wobble around a lot despite efforts squaring the frame and moving things around to get them perfectly aligned. Installing this coupler, that leadscrew is now parallel and does not show the same level of wobble as before. Printing a test cylindrical tube also shows no z-banding. -It provides an extra level of protection. If something causes your Z-axis to jam or otherwise smash into the bed, the two halves of this coupler actually separates completely allowing the stepper to free spin. In my case, I forgot to remove a tool I used to lock the z-axis into place during maintenance, and the separation of the coupler avoided any additional stress I would have placed on the printer components. I see some comments about this coupler separating prematurely during normal printing, but I hadn't experienced that problem. I can see that if coupler tolerances are bad, this can happen, but also you should be checking to make sure that your gantry is able to move up and down freely (remove the leadscrew and just move it up and down with your arms). Overall, this is a minor improvement over traditional coupler designs. I would not necessarily buy these simply for the sake of an upgrade (as I said, the stock Ender 3 coupler works ok); but if you were already looking to replace couplers for any reason, I think these are a no-brainer to get. ... show more
Reviewed in the United States on February 7, 2024 by C. Yang
    • Great for Z axis lead screws
Size: D20 L25 Style: 5-8 mm
I tried the other type of couplers that look more like a spring on the Z axis lead screws on my Ender 5 Plus but they stretched out and messed everything up. Got rid of those and replaced them with these. These work great and support the weight of the bed with ease. They are not really flexible so these will not solve any Z banding issues but they do stay together and don’t expand like the other type did. They don’t get 5 stars from me because of lack of flexibility but they are decent enough to get 4 stars. ... show more
Reviewed in the United States on April 22, 2023 by Shana
    • Too much pressure and it'll come apart vertically, but it's not broken which is nice
Size: D20 L25 Style: 5-8 mm
Good product
Reviewed in the United States on May 1, 2022 by Josh Ruiz
    • Screw won't tighten
Size: D20 L25 Style: 5-8 mm
I went to install this coupler today after work. I disassembled my ender-3, taking out the threaded rod and old coupler. I put the new coupler on and proceeded to tighten the bottom screw to lock it to the stepper motor only for the screw to fail to tighten and just spin. Defective threads maybe? Not worth the effort to return. ... show more
Reviewed in the United States on August 7, 2024 by Amazon Customer
    • Drop-in upgrade for Ender 3!
Size: D20 L25 Style: 5-8 mm
This fit perfectly on my Ender 3 as well as a couple of Ender 3 clones that I had sitting around. My ender was having trouble raising the z axis due to a faulty coupler from the factory. A cheap upgrade that can make all the difference!
Reviewed in the United States on July 2, 2024 by Matt Ruggles
    • Not that great
Size: D20 L25 Style: 5-8 mm
The pull apart, there is actually nothing that would keep them together. I installed them and not long afterwards, my printer would make some weird noise. Sounded like a door hinge that needed some form of lubrication. Took a few hours to locate the source. Turns out the piece of hard rubber, or whatever it is, in between the two metal pieces would cause the noise. Sounded really awful, like my printer would fall apart any moment. The Z lead screw(s) would sway like the Eiffel Tower. Thought my screw(s) were lose, hi, hi. So I checked them as good as I could and they ran true. Now I am using solid coupler and all is good. ... show more
Reviewed in the United States on April 19, 2021 by Oldguy

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