Engineering CAD Design Library

Browse quality-checked 3D CAD models for engineering, product design, prototyping and manufacturing. Preview models online and download files in STEP, STP, IGES, STL, OBJ, PLY, DWG, DXF and more.

All3D PrintingAerospaceArchitectureAutomotiveAviationChemicalConstructionElectricalEnergy And PowerIndustrial DesignJewelleryMachine designMarineMedicalMiscellaneousRobotics
10,000+ models2D drawings
Sort by:
Free
Moto Reductor Mini 1 | 3D CAD Engineering Model
MACHINE DESIGN · MOTO REDUCTOR MINI 1

Moto Reductor Mini 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
8814 Frc2023 Robot Cygnus X1 1 | 3D CAD Engineering Model
ROBOTICS · FRC2023

8814 Frc2023 Robot Cygnus X1 1 | 3D CAD Engineering Model

.STP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Z Axis Cnc 2 | 3D CAD Engineering Model
MACHINE DESIGN · Z AXIS CNC 2

Z Axis Cnc 2 | 3D CAD Engineering Model

.STP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Grab Claw Lock 1 | 3D CAD Engineering Model
MACHINE DESIGN · GRAB CLAW LOCK 1

Grab Claw Lock 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview

Need a CAD file that is not in the library?

Share your requirement and Marathon OS will match you with a vetted CAD designer for production-ready CAD files, edits and manufacturing documentation.

Get it Built
500+Projects Done
24 hrResponse
15+CAD Tools
Free
Lichuan 80 Frame 1Kw Ac Servo 1 | 3D CAD Engineering Model
ROBOTICS · LICHUAN 80 FRAME

Lichuan 80 Frame 1Kw Ac Servo 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
130Mm Plastic Wheel Set 1 | 3D CAD Engineering Model
MACHINE DESIGN · 130MM PLASTIC WHEEL SET

130Mm Plastic Wheel Set 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview

Browse CAD models by file format

STEP CAD modelsSTL CAD modelsIGES CAD modelsOBJ 3D modelsPLY modelsDWG drawingsDXF drawings

Browse CAD models by category

Automotive CAD modelsAerospace CAD modelsRobotics CAD models3D printing CAD modelsArchitecture CAD modelsIndustrial design CAD modelsMedical CAD modelsElectrical CAD models
Free
Leroy Somer Mbt86Vl Electric Motor 1 | 3D CAD Engineering Model
ELECTRICAL · ELECTRIC MOTOR

Leroy Somer Mbt86Vl Electric Motor 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
6552 | 3D CAD Engineering Model
MACHINE DESIGN · ENGINEERING VISUALIZATION

6552 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Robot Gantry 1 | 3D CAD Engineering Model
ROBOTICS · ROBOT GANTRY 1

Robot Gantry 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Jst S16B Phdss 1 | 3D CAD Engineering Model
ELECTRICAL · JST S16B PHDSS 1

Jst S16B Phdss 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
25Ga370 6V 320Rpm 26 1 Gear Motor 1 | 3D CAD Engineering Model
MACHINE DESIGN · 25GA370

25Ga370 6V 320Rpm 26 1 Gear Motor 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
16Ga Ppn13 Micro Gear Motor 1 | 3D CAD Engineering Model
MACHINE DESIGN · MICRO GEAR MOTOR

16Ga Ppn13 Micro Gear Motor 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Industrial Robot 31 | 3D CAD Engineering Model
ROBOTICS · INDUSTRIAL ROBOT 31

Industrial Robot 31 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Modular Electronics Box For Frc V2 1 | 3D CAD Engineering Model
ROBOTICS · MODULAR ELECTRONICS BOX

Modular Electronics Box For Frc V2 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Gp12 Ar1440 1 | 3D CAD Engineering Model
MACHINE DESIGN · GP12 AR1440 1

Gp12 Ar1440 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Rotary Pneumatic Unit 1 | 3D CAD Engineering Model
MACHINE DESIGN · ROTARY PNEUMATIC UNIT

Rotary Pneumatic Unit 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Robocon 2024 Arena Precision Optimized Simulation Playground 1 | 3D CAD Engineering Model
ROBOTICS · ROBOCON 2024

Robocon 2024 Arena Precision Optimized Simulation Playground 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ftc Alliancemarker Redsquare 1 | 3D CAD Engineering Model
ROBOTICS · FTCALLIANCEMARKERREDSQUARE1

Ftc Alliancemarker Redsquare 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
3 8Mm Ln Hex Bolt Nut 1 | 3D CAD Engineering Model
MACHINE DESIGN · HEX BOLT

3 8Mm Ln Hex Bolt Nut 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Esp32 S3 0 42Oled 1 | 3D CAD Engineering Model
ELECTRICAL · ESP32-S3

Esp32 S3 0 42Oled 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
A Basin For A Feed Manufacturing Machine 1 | 3D CAD Engineering Model
MACHINE DESIGN · BASIN

A Basin For A Feed Manufacturing Machine 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
25Mm Shaft Locking Coller 1 | 3D CAD Engineering Model
MACHINE DESIGN · 25MM SHAFT LOCKING COLLER

25Mm Shaft Locking Coller 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...293294295296297...next
Marathon OS logoThe CAD marketplace for modern teams
HomeAbout usWhy us?Contact us
Tools3D to 2D Drawing Pipeline3D CAD Viewer3D CAD File Converter
Library
Hire CAD Designers
Production-ready in 24 hrs
👤
→
2D Library
Ask a question
Privacy Policy|Terms of Service|Refund Policy|
© Marathon 2025 All Rights Reserved