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
Eel Trap - Standard Mechanical Component
MACHINE DESIGN · EEL TRAP

Eel Trap - Standard Mechanical Component

.STEP
Free
Ramp To Container | 3D Engineering Design File
MACHINE DESIGN · RAMP TO CONTAINER

Ramp To Container | 3D Engineering Design File

.STEP
Free
Yacht Stainless Steel Foldable Bollard | 3D Engineering Design File
MARINE · YACHT

Yacht Stainless Steel Foldable Bollard | 3D Engineering Design File

.STEP
Free
Kayak | 3D Engineering Design File
INDUSTRIAL DESIGN · KAYAK

Kayak | 3D Engineering Design File

.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
Storage Shelves | High-Quality CAD Model
INDUSTRIAL DESIGN · STORAGE SHELVES

Storage Shelves | High-Quality CAD Model

.STEP
Free
Ship Deck Crane On Ship Side | 3D Engineering Design File
MARINE · SHIP DECK CRANE

Ship Deck Crane On Ship Side | 3D Engineering Design File

.STEP
Free
Microhidro Turbin | 3D Engineering Design File
ENERGY AND POWER · MICROHIDRO TURBIN

Microhidro Turbin | 3D Engineering Design File

.STEP
Free
Sony Vr2 Controller - Standard Mechanical Component
SONY VR2 CONTROLLER

Sony Vr2 Controller - Standard Mechanical Component

.STEP
Free
Stacked Usb-C Connector | High-Quality CAD Model
ELECTRICAL · USB-C

Stacked Usb-C Connector | High-Quality CAD Model

.STEP
Free
Cs-47 25V | High-Quality CAD Model
MACHINE DESIGN · CS-47 25V

Cs-47 25V | High-Quality CAD Model

.STEP
Free
Steam Turbine | High-Quality CAD Model
ENERGY AND POWER · STEAM TURBINE

Steam Turbine | High-Quality CAD Model

.STEP
Free
Bb16Ap-Fa | High-Quality CAD Model
MACHINE DESIGN · BB16AP-FA

Bb16Ap-Fa | High-Quality CAD Model

.STEP
Free
𝐄𝐋𝐄𝐂𝐓𝐑𝐈𝐂𝐀𝐋 𝐄𝐍𝐂𝐋𝐎𝐒𝐔𝐑𝐄 - Downloadable CAD Representation
ELECTRICAL · ELECTRICAL ENCLOSURE

𝐄𝐋𝐄𝐂𝐓𝐑𝐈𝐂𝐀𝐋 𝐄𝐍𝐂𝐋𝐎𝐒𝐔𝐑𝐄 - Downloadable CAD Representation

.STEP
Free
Apem 631H - Downloadable CAD Representation
MACHINE DESIGN · APEM 631H

Apem 631H - Downloadable CAD Representation

.STEP
Free
Airtag | 3D Engineering Design File
INDUSTRIAL DESIGN · AIRTAG

Airtag | 3D Engineering Design File

.STEP
Free
Tv Samsung 43Inch | High-Quality CAD Model
SAMSUNG_43INCH_TV

Tv Samsung 43Inch | High-Quality CAD Model

.STEP
Free
Nkk Eb2065 - Downloadable CAD Representation
MACHINE DESIGN · NKK EB2065

Nkk Eb2065 - Downloadable CAD Representation

.STEP
Free
Coil Winder Design | 3D Engineering Design File
MACHINE DESIGN · COIL WINDER

Coil Winder Design | 3D Engineering Design File

.STEP
Free
30Mm Push Button Switch With Led - Downloadable CAD Representation
ELECTRICAL · 30MM PUSH BUTTON SWITCH

30Mm Push Button Switch With Led - Downloadable CAD Representation

.STEP
Free
Plc Outseal Mega V3 - Downloadable CAD Representation
MACHINE DESIGN · PLC OUTSEAL MEGA V3

Plc Outseal Mega V3 - Downloadable CAD Representation

.STEP
Free
Kr7G5-Hs - Standard Mechanical Component
MACHINE DESIGN · KR7G5-HS

Kr7G5-Hs - Standard Mechanical Component

.STEP
Free
Es6Cclear - Downloadable CAD Representation
MACHINE DESIGN · ES6CCLEAR

Es6Cclear - Downloadable CAD Representation

.STEP