mechanical design CAD Models

Browse mechanical design CAD models used in real projects. Preview online and download STEP/STP, IGES, STL and more. Filter by category, file type, price and popularity.

Browse by part & function

The axis engineers actually search on — pick a part type to filter the catalog.

See all parts

Build kits

Curated systems with verified mating parts — download the whole assembly at once.

All collections
CONSUMER ELECTRONICS

iPhone Accessory & Case Design Kit

A practical iPhone accessory cluster for designing cases, charging stands, holders and fit-checking around real phone geometry.

6 partspairs verified
DRONES / UAV

250 mm FPV Drone Build Kit

A complete FPV quad build cluster covering frame, propulsion, camera, control electronics, battery housing and mounting hardware.

7 partspairs verified
MOTION CONTROL

NEMA 17 Motion / Linear Actuator Kit

A motion-control cluster around a NEMA 17 stepper, bracket, coupler, GT2 belt, pulley, bearing and driver.

5 partspairs verified
HARDWARE

Metric Fasteners & Threaded Hardware Pack

A reusable ISO/metric fastener library cluster with screws, nuts, washers, inserts, standoffs and bolt assemblies.

2 partspairs verified
3D PRINTING

3D Printer Motion & Extruder Upgrade Kit

A 3D-printer upgrade cluster combining hotend parts, filament handling, stepper drive and motion hardware.

7 partspairs verified
ELECTRONICS PROTOTYPING

Arduino / ESP32 Prototyping Kit

A maker electronics cluster with Arduino, ESP32, breadboard, shield, servo, battery holder and enclosure.

7 partspairs verified
ROBOTICS

Robotic Arm + Gripper Kit

A robotic manipulator cluster with 6-DOF arm, gripper, wrist, servo mounts, actuator and linear guide components.

7 partspairs verified
CNC MACHINING

CNC Workholding & Tooling Kit

A CNC machining cluster covering table, clamping, vise, chuck, collet holder, spindle and ball-screw motion.

6 partspairs verified
HVAC / DUCTING

HVAC Ventilation Duct Assembly Kit

A ventilation product cluster with grille, damper, duct adapter, fan, filter, flange and duct clamp.

6 partspairs verified
FLUID POWER

Hydraulic / Pneumatic Pump & Valve Manifold Kit

A fluid-power cluster combining pump, valves, pressure gauge, manifold block, pipe and coupling parts.

8 partspairs verified
MOBILE ROBOTICS

RC / Line-Follower Robot Chassis Kit

A small mobile-robot cluster with chassis, wheels, hubs, motors, motor mounts, controller, battery holder and damper.

9 partspairs verified
WORKSPACE ACCESSORIES

Desk Cable + Phone Stand Workstation Kit

A desk-organization product cluster combining cable routing, phone holders, headphone stands and laptop/iMac stands.

7 partspairs verified
CAMERA / IMAGING RIGS

Camera Gimbal & Mount Rig Kit

A camera-rig cluster with gimbal, camera modules, tripod, tilt head, GoPro mount and camera bracket parts.

5 partspairs verified
1390 models2D drawings
Sort by:
Free
E File Repair (Reupload) - Downloadable CAD Representation
MACHINE DESIGN · E FILE REPAIR

E File Repair (Reupload) - Downloadable CAD Representation

.STEP
Free
Crazy Bee Usb Stick Casing (Reupload) | High-Quality CAD Model
INDUSTRIAL DESIGN · USB STICK CASING

Crazy Bee Usb Stick Casing (Reupload) | High-Quality CAD Model

.STEP
Free
Tee Elbow 90 Degree _Ladder Type | High-Quality CAD Model
INDUSTRIAL DESIGN · TEE ELBOW 90 DEGREE

Tee Elbow 90 Degree _Ladder Type | High-Quality CAD Model

.STEP
Free
𝗠𝗜𝗖𝗥𝗢𝗪𝗔𝗩𝗘 𝗢𝗩𝗘𝗡 - Standard Mechanical Component
MACHINE DESIGN · MICROWAVE OVEN

𝗠𝗜𝗖𝗥𝗢𝗪𝗔𝗩𝗘 𝗢𝗩𝗘𝗡 - Standard Mechanical Component

.STEP

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
Lumenati 8 Pack From Sparkfun | 3D Engineering Design File
3D PRINTING · LUMENATI 8 PACK

Lumenati 8 Pack From Sparkfun | 3D Engineering Design File

.STEP
Free
Block.Eu Vc 10/1/9 | 3D Engineering Design File
MACHINE DESIGN · BLOCK.EU VC 10/1/9

Block.Eu Vc 10/1/9 | 3D Engineering Design File

.STEP
Free
Lamp | High-Quality CAD Model
INDUSTRIAL DESIGN · LAMP

Lamp | High-Quality CAD Model

.STEP
Free
Rozvaděčový Žlab - Downloadable CAD Representation
ELECTRICAL · ROZVADĚČOVÝ ŽLAB

Rozvaděčový Žlab - Downloadable CAD Representation

.STEP
Free
Elektrický Můstek - Standard Mechanical Component
MACHINE DESIGN · ELEKTRICKÝ MŮSTEK

Elektrický Můstek - Standard Mechanical Component

.STEP
Free
Edgepromx | 3D Engineering Design File
MACHINE DESIGN · EDGEPROMX

Edgepromx | 3D Engineering Design File

.STEP
Free
Smt-Pm04-V3 | High-Quality CAD Model
MACHINE DESIGN · SMT-PM04-V3

Smt-Pm04-V3 | High-Quality CAD Model

.STEP
Free
Old Model Tv Body | 3D Engineering Design File
INDUSTRIAL DESIGN · OLD MODEL TV BODY

Old Model Tv Body | 3D Engineering Design File

.STEP
Free
Vfqfpn36 6×6Mm | 3D Engineering Design File
MACHINE DESIGN · VFQFPN36

Vfqfpn36 6×6Mm | 3D Engineering Design File

.STEP
Free
Protótipo Cnc - Downloadable CAD Representation
MACHINE DESIGN · PROTTIPO CNC

Protótipo Cnc - Downloadable CAD Representation

.STEP
Free
E52-400Nw22S - Downloadable CAD Representation
MACHINE DESIGN · E52-400NW22S

E52-400Nw22S - Downloadable CAD Representation

.STEP
Free
Dks 20 - M6 | 3D Engineering Design File
MACHINE DESIGN · DKS 20 - M6

Dks 20 - M6 | 3D Engineering Design File

.STEP
Free
M5Stack Cardkb Silicon Cover - Downloadable CAD Representation
INDUSTRIAL DESIGN · M5STACK CARDKB

M5Stack Cardkb Silicon Cover - Downloadable CAD Representation

.STEP
Free
Tau1103-1010A00E - Standard Mechanical Component
MACHINE DESIGN · TAU1103-1010A00E

Tau1103-1010A00E - Standard Mechanical Component

.STEP
Free
Vtx-146-0001-290 - Downloadable CAD Representation
MACHINE DESIGN · VTX-146-0001-290

Vtx-146-0001-290 - Downloadable CAD Representation

.STEP
Free
Pe Crocodile - Standard Mechanical Component
MACHINE DESIGN · PE CROCODILE

Pe Crocodile - Standard Mechanical Component

.STEP
Free
L-Kls1-5473 - Downloadable CAD Representation
MACHINE DESIGN · L-KLS1-5473

L-Kls1-5473 - Downloadable CAD Representation

.STEP
Free
Ac5E - Standard Mechanical Component
MACHINE DESIGN · AC5E

Ac5E - Standard Mechanical Component

.STEP