Actuator printable 3d models
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93 actuator printable 3d models found

Download or buy, then render or print from the shops or marketplaces. 3D Models below are suitable not only for printing but also for any computer graphics like CG, VFX, Animation, or even CAD. You can print these 3d models on your favorite 3d printer or render them with your preferred render engine. Please note that the 3D model database is only a Search Engine. You should visit the original websites. Most of the models can be easily imported and rendered with Autodesk 3ds Max, Maya, Blender, C4D, and Sketchup. Check for online 3d model conversions tools for your file format.
thingiverse
free
3D-printable linear actuator by Bribro12

3D-printable linear actuator by Bribro12

...: https://www.thingiverse.com/thing:2470882 best 3d-printable bearing: https://www.thingiverse.com/thing:2349065 have a nice day!
thingiverse
free
3D Printable Makerslide Actuator mount by planetdrock

3D Printable Makerslide Actuator mount by planetdrock

...centric spacer side uses 1 30mm m5 bolt and the other 2 use 25mm m5 bolts. i also use 1 5mm washer on each side of each v wheel.
thingiverse
free
BITalino Buzzer (BUZ) Actuator Housing by BEE Very Creative by BITalinoWorld

BITalino Buzzer (BUZ) Actuator Housing by BEE Very Creative by BITalinoWorld

...housing by bee very creative by bitalinoworld thingiverse 3d printable housing for the bitalino buzzer (buz) actuator (http://www.bitalino.com) by...
thingiverse
free
BITalino Light-Emitting Diode (LED) Actuator Housing by BEE Very Creative by BITalinoWorld

BITalino Light-Emitting Diode (LED) Actuator Housing by BEE Very Creative by BITalinoWorld

...housing by bee very creative by bitalinoworld thingiverse 3d printable housing for the bitalino light-emitting diode (led) actuator (http://www.bitalino.com)...
thingiverse
free
BITalino Digital-to-Analog Converter (DAC) Actuator Housing by BEE Very Creative by BITalinoWorld

BITalino Digital-to-Analog Converter (DAC) Actuator Housing by BEE Very Creative by BITalinoWorld

...housing by bee very creative by bitalinoworld thingiverse 3d printable housing for the bitalino digital-to-analog converter (dac) actuator (http://www.bitalino.com)...
thingiverse
free
Dummy finger testbed for soft actuators by tvjtarvainen

Dummy finger testbed for soft actuators by tvjtarvainen

...for making multi-chamber soft actuators. stl files for a 3d-printable mold are also included in the supplementary...
thingiverse
free
Mostly Printed Mechanical Actuator by 3DPRINTINGWORLD

Mostly Printed Mechanical Actuator by 3DPRINTINGWORLD

...rails can be bolted together for infinite travel lengths. printable tpu gt2 belt file included, prints in vase mode....
thingiverse
free
sPARTA by adth

sPARTA by adth

...t the video on youtube: https://youtu.be/hl8ivsbkgeq also check out darm by seagull008: https://www.thingiverse.com/thing:1204552
thingiverse
free
Replacement Flush Lever for Danco HydroStop Flush Mechanism by zorlack

Replacement Flush Lever for Danco HydroStop Flush Mechanism by zorlack

...contacting the manufacturer. the lever itself uses a plastic actuator arm seemingly designed to fail. here is 3d printable...
thingiverse
free
Linear Actuator

Linear Actuator

...with support layer height 0.15 mm material: pla non printable parts: the motor is commonly available metal geared motor....
thingiverse
free
Rigid Chain Screw Actuator by ttsalo

Rigid Chain Screw Actuator by ttsalo

...chain screw actuator by ttsalo thingiverse when researching various printable linear motion technologies, i came across the idea of...
thingiverse
free
Dextra by Alvipe

Dextra by Alvipe

...is, they have more degrees of freedom (dof) than actuator. each finger module has three dof and one motor,...
thingiverse
free
Robotic Hand 2.0 by po3plestorm

Robotic Hand 2.0 by po3plestorm

...lly up to what u are using this hand for and of course u can do whatever u want with it just make is non commercial and credit me
thingiverse
free
3D-Maze by HenkK

3D-Maze by HenkK

...1988. the present design of the maze inclusive the „actuator structure is by me. the object is to move...
thingiverse
free
Electromagnet Ratchet Motor by mattmoses

Electromagnet Ratchet Motor by mattmoses

...other actuator ideas listed on the reprap actuator fabrication pagehttp://reprap.org/wiki/actuatorfabrication ...
thingiverse
free
MECHANICAL ACTUATOR by 3DPRINTINGWORLD

MECHANICAL ACTUATOR by 3DPRINTINGWORLD

...all the components for this actuator are all 3d printable and its constructed similar to an actual mechanical actuator...
thingiverse
free
In-Wall Sonoff Light Switch V2+ FIXED and Printable by CaptKirk

In-Wall Sonoff Light Switch V2+ FIXED and Printable by CaptKirk

...also a bit wimpy so i strengthened them. the actuator pivots were too long for easy installation so i...
thingiverse
free
Modular Robot Under-Actuated Modules (ZaMoBot) by czarama

Modular Robot Under-Actuated Modules (ZaMoBot) by czarama

...st and easy printable connector. tags: robot, robotic, robotics, manipulator, control, cool robot, robotic arm, educational robot
thingiverse
free
3D Printed Linear Actuator - Linear motion  by Retsetman

3D Printed Linear Actuator - Linear motion by Retsetman

...thingiverse video can be found here: https://www.youtube.com/watch?v=nlscbeoijay source files: https://www.cgtrader.com/3d-print-models/science/engineering/3d-printablelinear-actuator-b78ad144-de5c-4ce5-b99b-1845e9275fa4 in this project i designed this linear actuator. you...
thingiverse
free
The Lucky Paw Prosthetic Hand by Rhadamanthys76

The Lucky Paw Prosthetic Hand by Rhadamanthys76

...7715636887179986 for more information and amazing stories:http://enablingthefuture.orghttps://www.facebook.com/enableorganization
thingiverse
free
Mini 3D-printable crossbow by Bribro12

Mini 3D-printable crossbow by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
Ghostbusters - Ghost Trap by daniel_nelms

Ghostbusters - Ghost Trap by daniel_nelms

...electronics inside should you want to but in some actuator, lights, leds, etc. otherwise everything is printable! most of...
thingiverse
free
3D-printable Davinci catapult gift card

3D-printable Davinci catapult gift card

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
Modular Robot Linear Module (ZaMoBot) by czarama

Modular Robot Linear Module (ZaMoBot) by czarama

...amp to the servo. tags: robot, robotic, robotics, manipulator, control, cool robot, robotic arm, educational robot, carlos zarama
thingiverse
free
best 3D-printable bearing by Bribro12

best 3D-printable bearing by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
'BOOM box' high voltage capacitor bank case by Bribro12

'BOOM box' high voltage capacitor bank case by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
[MDN.SP] 6DOF Stewart Platform by JorgeMDN

[MDN.SP] 6DOF Stewart Platform by JorgeMDN

...case, i used six mg996r servo motors as the actuator and used a 3d printer to make the base...
thingiverse
free
Parloma Hand v1.0 beta 2 by parloma

Parloma Hand v1.0 beta 2 by parloma

...have a greater flexibility in the positioning of the actuator and consequently a greater freedom in the design. soon...
thingiverse
free
3D-printable shredder by Bribro12

3D-printable shredder by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
Fully 3D-printable wind-up car gift card by Bribro12

Fully 3D-printable wind-up car gift card by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
UMC - Universal motion controller by Bribro12

UMC - Universal motion controller by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
Modular Robot Rotational Module (ZaMoBot ) by czarama

Modular Robot Rotational Module (ZaMoBot ) by czarama

... up to 6 servos. tags: robot, robotic, robotics, manipulator, control, cool robot, robotic arm, educational robot, carlos zarama
thingiverse
free
WinDIY - A (mostly) 3D printable wind-turbine by Nerdiy

WinDIY - A (mostly) 3D printable wind-turbine by Nerdiy

...rotating tower: https://nerdiy.de/howto-windiy-drehturm-aufbauen/ build main axis: https://nerdiy.de/howto-windiy-montage-der-hauptachse/ build pitch actuator https://nerdiy.de/howto-windiy-pitch-aktor-zusammenbauen/ license unless otherwise stated, all works presented here...
thingiverse
free
8 legged spider robot by Bribro12

8 legged spider robot by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
One Piece Flexible Articulated Prosthetic Hand by Shootquinn

One Piece Flexible Articulated Prosthetic Hand by Shootquinn

...thingiverse.com/thing:380665 he also has a one piece printable hand, https://www.thingiverse.com/thing:439484 thanks for looking!
thingiverse
free
Selectron, modular extruder and multi-filament selector (not mixing)

Selectron, modular extruder and multi-filament selector (not mixing)

...rcad searching for "selectron" any help, particularly about managing selectron from marlin, will be greatly appreciated
thingiverse
free
Velleman K8800 Delta LM10UU Linear Bearing Upgrade by DrVegetable

Velleman K8800 Delta LM10UU Linear Bearing Upgrade by DrVegetable

...designed to print without any supports. the small endstop actuator tab is meant to be inserted into the slot...
thingiverse
free
Ada Robotic Hand by openbionics

Ada Robotic Hand by openbionics

...x 0.7mm tendon string 5 x firgelli 12v linear actuator (pq12-30-12-p) 1 x open bionics almond electronics 5 x...
thingiverse
free
T800 Smooth Terminator Endoskull Printable WithBase (not ExoSkull) by machina

T800 Smooth Terminator Endoskull Printable WithBase (not ExoSkull) by machina

...as eye sockets, cheek bones, nose, side "robot" details, actuator are beefed up, cheek actuators beefed up and adjusted...
thingiverse
free
Inline Peristaltic Pump for Nema 17 Stepper by ractorIII

Inline Peristaltic Pump for Nema 17 Stepper by ractorIII

...bushing bearings (16mm x 28mm x 7mm) 8 x actuator bearings (12mm x 21mm x 5mm) 6.35mm to 5mm...
thingiverse
free
Adaptive/Assistive 3.5mm Button by ctag

Adaptive/Assistive 3.5mm Button by ctag

...s microphone and detect button presses. this is still something we're looking into, and hope to return with more robust code.
thingiverse
free
Turning 50 cent into a Bitcoin by Bribro12

Turning 50 cent into a Bitcoin by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
3D printable antweight battlebot: Bulldog by Bribro12

3D printable antweight battlebot: Bulldog by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
Dominion Crusader chassis (28mm) MK3 by SebTheis

Dominion Crusader chassis (28mm) MK3 by SebTheis

...see stroganoff's design. https://www.thingiverse.com/thing:1667453 if you wish to add actuator around the lower legs, that's where you'll find them....
thingiverse
free
robot hand || bionic hand prosthesis prototype by Bribro12

robot hand || bionic hand prosthesis prototype by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
Subby the interactive youtube subscriber robot by Bribro12

Subby the interactive youtube subscriber robot by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
Smartphone Photo Studio for #3DBenchy and tiny stuff by CreativeTools

Smartphone Photo Studio for #3DBenchy and tiny stuff by CreativeTools

...eative tools home - youtube - things - #3dbenchy - twitter - facebook - instructables - instagram - pinterest - flickr - linkedin
thingiverse
free
The 100 $ lab: Fluorescence microscope & behavioural tracker for optogenetics by BadenLab

The 100 $ lab: Fluorescence microscope & behavioural tracker for optogenetics by BadenLab

...accurate temperature control. in addition, servo motors and other actuator can be attached. all mechanics are 3d printed. a...
thingiverse
free
Ultrasonic Welding Machine by 3DPossible

Ultrasonic Welding Machine by 3DPossible

.... look for the latest revision number in the series for the latest file. i think it's interesting watching a product evolve.
thingiverse
free
OpenVent - 3D printable BVM Ventilator, Design B2, Cabled Pliers by OpenVent

OpenVent - 3D printable BVM Ventilator, Design B2, Cabled Pliers by OpenVent

...thout). endurance testing and optimization of the gear ratio is pending. more detailed discussions to follow on our github pages.
thingiverse
free
Viper Trigger for Airsoft BAR-10, VSR-10 or other VSR style Airsoft rifles by PaperScarecrow

Viper Trigger for Airsoft BAR-10, VSR-10 or other VSR style Airsoft rifles by PaperScarecrow

...et, sand the edges and you should be ready to roll. this is a small part so watch your temps or you may encounter warping issues.
thingiverse
free
Mini Kossel Effector (FLSun) by jorisjanssen

Mini Kossel Effector (FLSun) by jorisjanssen

...3 x m3x12 (hinges of the hot-end clamp + actuator for the leveling switch) 2 x m3x10 + 2...
thingiverse
free
SpaceX inspired edf rocket by Bribro12

SpaceX inspired edf rocket by Bribro12

...hand || bionic hand prosthesis prototype: https://www.thingiverse.com/thing:2838239 3d-printable linear actuator https://www.thingiverse.com/thing:2783959 mini 3d-printable crossbow: https://www.thingiverse.com/thing:2710472 8 legged spider robot:...
thingiverse
free
3D Printed Braille Display by pyrophreek

3D Printed Braille Display by pyrophreek

...diameter stepper motors, and some even come with linear actuator using a threaded...
thingiverse
free
Sea Sled: Outrigger/Catamaran Hull Sections by 4ndy

Sea Sled: Outrigger/Catamaran Hull Sections by 4ndy

...sail, solar panel, battery, arduino gps shield, sensors and actuator, and have it circumnavigate the globe autononmously. zero-fuel automated...
thingiverse
free
OpenVent - 3D printable BVM Ventilator, Design A1 by OpenVent

OpenVent - 3D printable BVM Ventilator, Design A1 by OpenVent

...e mechanically compensated. nema-23 appears to be a very robust and simple choice. more detailed discussions on our github pages.
thingiverse
free
The Osprey Hand by Alderhand and e-Nable by profbink

The Osprey Hand by Alderhand and e-Nable by profbink

... the loose-weave nylon webbing. 2017-10-23 added pin tongs and a pin pusher, to help with the insertion and removal of snap pins.
thingiverse
free
PanelDue 5" and Duet 2 Mounts for SeeMeCNC Rostock Max V2 by slonold

PanelDue 5" and Duet 2 Mounts for SeeMeCNC Rostock Max V2 by slonold

...phery of the onyx bed. some tape to hold the bed and template down will be your friend whilst you outline the bed plate cut out.
thingiverse
free
Self winding pendulum clock (climbing weight for weight driven clocks) by krahut

Self winding pendulum clock (climbing weight for weight driven clocks) by krahut

...rod can be printed out with the associated switch actuator the whole mechanism is covered with a cylindrical shell,...
thingiverse
free
Gear actuated robot arm by elliot4711

Gear actuated robot arm by elliot4711

...rs and control unit and you are ready to go! for more information on code and project see https://github.com/elliot4711/robot_arm
thingiverse
free
'wearable' T60b Power Armor from Fallout 4 Brotherhood of Steel by MacNite

'wearable' T60b Power Armor from Fallout 4 Brotherhood of Steel by MacNite

... fit your body. known issues: parts need further break-down into smaller pieces to be printed on smaller printers poor resolution
thingiverse
free
Hobbyking / Starmax Piper J3 Cub 1400mm Replacement Parts by carbonbased

Hobbyking / Starmax Piper J3 Cub 1400mm Replacement Parts by carbonbased

...r" and "steering holder" re-uploaded "ski tail" with the correct orientation for printing (on its side).
thingiverse
free
Functional SCUBA Low Pressure Demand Regulator v3.6 by Biketool

Functional SCUBA Low Pressure Demand Regulator v3.6 by Biketool

...c. and a luminous compass. of course these pressures get dangerous fast so perhaps better to stick with a commercial first stage.
cg_trader
$6
3D-printable linear actuator | 3D

3D-printable linear actuator | 3D

...3d-printable linear actuator | 3d cg trader these files are the fusion 360 source files of this project.
cg_trader
$6
3D Printable Linear SERVO Actuator | 3D

3D Printable Linear SERVO Actuator | 3D

...3d printable linear servo actuator | 3d cg trader video link: https://www.youtube.com/watch?v=-c1jrt7flqs
grabcad
free
3D Printable soft gripper (Cable actuation)

3D Printable soft gripper (Cable actuation)

...t the gripper with ninjaflex and can be used of different projects based on soft grippers. editable for different stepper motor.
cg_trader
$8
3D printable Linear Actuator  | 3D

3D printable Linear Actuator | 3D

...ationary parts. you should print the gears with lower layer height (0.12 mm -0.16 mm). infill for the gears its good % 50 or %100
grabcad
free
Axis Slider, Actuator

Axis Slider, Actuator

...axis slider, actuator grabcad 3d printable linear actuator. this is just a concept. modify as...
grabcad
free
Compliant Actuator

Compliant Actuator

...compliant actuator grabcad high torque (7:1) 3d printable compliant actuator. inspiration was drawn from .... credits: skyntefic...
grabcad
free
Posthetic hand

Posthetic hand

...osthetic hand grabcad prosthetic hand prototype that is 3d printable. uses servo motor and fishing string to actuate the finger.
grabcad
free
Linear Servo Horn (Standard Servo)

Linear Servo Horn (Standard Servo)

...any standard servo and transforms it into a linear actuator ...
cg_trader
$5
Linear Actuator  | 3D

Linear Actuator | 3D

...3d cg trader this is a simple functional 3d printable linear actuator that can be used for robotics or...
grabcad
free
Robotic Arm

Robotic Arm

...it can be functional by using geared motors as actuator and arduino as a controlling...
grabcad
free
Prosthetic hand

Prosthetic hand

...of .015'' thick high carbon steel wire and servo actuator, nerve sensors, and an intelligiently written program with an...
grabcad
free
SprayMaster

SprayMaster

...automatic sprayer. easy 3d printed project to add an actuator for a scuttle robot requires: screws, m5, assorted nuts,...
cg_trader
$10
Back Mounted Gimbal Arm  | 3D

Back Mounted Gimbal Arm | 3D

...der gimbal arm that mounts to users back and actuates closed or open giving a unique view point for action cameras. 3d printable
grabcad
free
3-D Printable Robot Gripper

3-D Printable Robot Gripper

...ing line. the nubs on the outside of the gripper are for rubber bands to be attached to open the gripper when the servo releases.
grabcad
free
3 Finger Robotic Hand

3 Finger Robotic Hand

...or the original cad: https://grabcad.com/library/prosthetic-limb-3d-printable-1 and to mahmoud nasser for helping with the edits.
grabcad
free
3D printable Bar ends for bike, dirt bike, scooter,

3D printable Bar ends for bike, dirt bike, scooter,

.... all should be sized such that a 1/4 inch bolt actuates the wedge, this may need a little refinement? we shall see when i print.
grabcad
free
Covent-19

Covent-19

...bag and accessories that go with it. the linear actuator is going to have electronic components,as well as the...
grabcad
free
Collision Avoiding Robot

Collision Avoiding Robot

...servo actuated red gripper/gate and navigate to home base of different color and drop off said puck on the home base, and repeat.
grabcad
free
Collision Avoiding Swarm Robot

Collision Avoiding Swarm Robot

...servo actuated red gripper/gate and navigate to home base of different color and drop off said puck on the home base, and repeat.
grabcad
free
Backdrivable Cycloidal Drive Robotic Actuator

Backdrivable Cycloidal Drive Robotic Actuator

...backdrivable cycloidal drive robotic actuator grabcad this is a 3d-printable cycloidal drive robotic actuator. it is backdrivable and has...
grabcad
free
NEUVent

NEUVent

...a. this design was created by futurescape engineering, a product design house based out of northeastern university in boston, ma.
grabcad
free
5 DOF Robotic Arm

5 DOF Robotic Arm

...-printed parts python and arduino code: https://github.com/jasonjzliu/gesture-controlled-5-dof-robotic-arm-using-computer-vision
grabcad
free
Hexa AMBU Artificial Respiratory System

Hexa AMBU Artificial Respiratory System

...pump only one bag or more depending on the need. more than one pump can be connected to the same patient if more air is required.
grabcad
free
Fishing Reel Ver3 FINAL

Fishing Reel Ver3 FINAL

... the handle. as i used autodesk inventor to design this, i included the original ipt files, as well as stl and stp file formats.
grabcad
free
ASME Student Challenge: Designing for Social Impact_3D printable Drone attachment

ASME Student Challenge: Designing for Social Impact_3D printable Drone attachment

...the desired location, the payload can be dropped using actuator attached to the bottom supports or the payload can...
grabcad
free
Ambu-bag ventilator

Ambu-bag ventilator

...suitable autoclave. the bag is disposable, and the main actuator can be cleaned using any alcohol wipes. - multiple...
grabcad
free
CLASP-3D drone attachment for social impact

CLASP-3D drone attachment for social impact

...this purpose.the attachment can be operated using rc linear actuator or through other locking and unlocking devices which are...
cg_trader
$6
3D-printable high torque strain wave gearbox - Harmonic drive | 3D

3D-printable high torque strain wave gearbox - Harmonic drive | 3D

...gear gears strain wave harmonic drive reduction reductor servo actuator robot mechanical mechanics mechanism arduino motor electric industrial transmission...
grabcad
free
Lower Arm Prosthesis

Lower Arm Prosthesis

...each of the fingers, and connected to a linear actuator in the forearm. when the motor pulls the fishing...
grabcad
free
Electromechanical Variator

Electromechanical Variator

...which would be moved back and forth via an actuator by electric motors. it is the most efficient electronically...