The Real Servo Motors

If the perfect motor doesn’t exist, we build it. That’s our commitment to excellence.

Guess where it’s going to be? :nerd_face:

https://share.bambulab.com/BambuLabH2D

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nice!!! a bambu lab DJI Drone :wink: kidding

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will lift and lower the nozzle. The extruder swapping servo has its coils exposed, so cant be it… Seems too shallow to do anything else

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Looking like the Extruder motor?

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I don’t know where this is going. But it’s definitely going to go somewhere very good. And it’s definitely going to come at a very high price.

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C’est pour les tiges filetées des axes Z ?

Omg just take my money already

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Imma gonna guess… it is inside the printer somewhere! :rofl: :rofl:

On a more serious note, my money is on lift servo also.

I reckon it’s the xy motors

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If Bambu Lab is really introducing servomotors in their new printer, this could be a serious upgrade.

Unlike traditional stepper motors, servos have a feedback system that continuously corrects positioning, eliminating lost steps. This means more precise and smoother movements, higher speed and acceleration without sacrificing quality, less noise and vibrations for cleaner prints, and optimized power consumption since they adjust energy use based on load.

They could use it on the extruder for better filament control, on the X/Y axes to improve speed and precision, or maybe even on the Z axis for a more stable first layer.

If that’s the case, this might be a game-changer. Let’s see what they come up with, but the hype is real! :star_struck:

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i have never seen printers with pancake motors on xy axis my friend :stuck_out_tongue:

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also it only has 0.5a of power there is no way this is for xy… at least not this motor… meaby they have different servos for xy

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Stepper Motors vs. Servo Motors in 3D Printers – Which One is Better?

When it comes to 3D printing, the choice of motors plays a crucial role in precision, speed, and reliability. Most consumer-grade FDM 3D printers use stepper motors, but servo motors are also an option, especially for high-performance applications. So, what’s the difference, and is it worth upgrading? Let’s break it down.


1. Stepper Motors – The Standard Choice

:white_check_mark: Common in most 3D printers
:white_check_mark: Open-loop control (no feedback needed)
:white_check_mark: Naturally holds position due to magnetic stepping
:white_check_mark: Cost-effective and easy to control
:white_check_mark: High resolution with microstepping

:x: No feedback system – lost steps can cause print failures
:x: Torque decreases at higher speeds
:x: Can be noisy at certain speeds

:arrow_right: Ideal for most FDM 3D printers because they are reliable and affordable.


2. Servo Motors – A High-Performance Upgrade

:white_check_mark: Closed-loop control (encoder feedback ensures accuracy)
:white_check_mark: Higher precision and repeatability
:white_check_mark: No lost steps – system corrects positioning errors automatically
:white_check_mark: Better torque at high speeds
:white_check_mark: Quieter and smoother operation

:x: More expensive than stepper motors
:x: Requires more complex electronics to operate

:arrow_right: Best suited for industrial or high-speed 3D printers where accuracy and performance matter.

:pushpin: Written by ChatGPT

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Nice!!! The Bambu Lab H2D looks really interesting. :tada:

heres a hint. It mounts with only 2 small screws that also hold the assembly together. its most likely part of another modular assembly. Otherwise, it would fall apart when you removed it(if it was the extruder motor for example)

Edit. I could be wrong. The colors do match the extruder motor. Maybe its designed to fall apart when you remove it lol.

Or all the servos and steppers have the same colors.

If it does use all servos, add $250 to my last guess lol

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Ok i’m hoping it’s everywhere. But maybe this was developed just for the toolhead to be a lightweight replacement

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I think this could be a marketing strategy. Maybe all engines except for a few locations could be standard engines. We will see all the details on the 25th of the month.

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The steep helix on the output shaft is interesting.

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Perhaps it is specifically for a laser tool.

When i first saw it it made me think its for pushing and pulling something as it spins. if its counterpart also has the same spline setup. Clockwise pushing, counterclockwise pulling. Basing this on how steep it is compared to the splines on a normal extruder motor