mechanical assembly CAD Models in Machine design

Browse mechanical assembly CAD models within Machine design. Preview online and download STEP/STP, IGES, STL and more. Filter by 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
510 models2D drawings
Sort by:
Free
Motor De Dos Helices 1 | 3D CAD Engineering Model
MACHINE DESIGN · MOTOR DE DOS HELICES 1

Motor De Dos Helices 1 | 3D CAD Engineering Model

.STEP
Free
Single Axle Cannon 1 | 3D CAD Engineering Model
MACHINE DESIGN · SINGLE AXLE CANNON 1

Single Axle Cannon 1 | 3D CAD Engineering Model

.STEP
Free
Vertical Spring Loading Machine 1 | 3D CAD Engineering Model
MACHINE DESIGN · VERTICAL SPRING LOADING MACHINE

Vertical Spring Loading Machine 1 | 3D CAD Engineering Model

.STEP
Free
Spring Assembly 3 | 3D CAD Engineering Model
MACHINE DESIGN · SPRING ASSEMBLY 3

Spring Assembly 3 | 3D CAD Engineering Model

.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
Ball Bearing 660 | 3D CAD Engineering Model
MACHINE DESIGN · BALL BEARING 660

Ball Bearing 660 | 3D CAD Engineering Model

.STEP
Free
Belt Roller Support Assembly 9 | 3D CAD Engineering Model
MACHINE DESIGN · BELT ROLLER SUPPORT ASSEMBLY 9

Belt Roller Support Assembly 9 | 3D CAD Engineering Model

.STEP
Free
Tos Freze Eksen Kutusu 1 | 3D CAD Engineering Model
MACHINE DESIGN · TOS FREZE EKSEN KUTUSU 1

Tos Freze Eksen Kutusu 1 | 3D CAD Engineering Model

.STEP
Free
Toggle Clamp 97 | Professional CAD Design
MACHINE DESIGN · TOGGLE CLAMP 97

Toggle Clamp 97 | Professional CAD Design

.STEP
Free
General Pump Valve Kit 123 1 | Professional CAD Design
MACHINE DESIGN · GENERAL PUMP VALVE KIT 123 1

General Pump Valve Kit 123 1 | Professional CAD Design

.STEP
Free
Deep Groove Ball Bearing 12 | Professional CAD Design
MACHINE DESIGN · DEEP GROOVE BALL BEARING 12

Deep Groove Ball Bearing 12 | Professional CAD Design

.STEP
Free
Lego 42133 Chariot Elevateur 1 | Professional CAD Design
MACHINE DESIGN · LEGO 42133

Lego 42133 Chariot Elevateur 1 | Professional CAD Design

.STEP
Free
Bench Vise 132 | Professional CAD Design
MACHINE DESIGN · BENCH VISE 132

Bench Vise 132 | Professional CAD Design

.STEP
Free
Jib Crane With Motor 1 | Professional CAD Design
MACHINE DESIGN · JIB CRANE

Jib Crane With Motor 1 | Professional CAD Design

.STEP
Free
Joint With Shock Absorber 1 | Professional CAD Design
MACHINE DESIGN · JOINT

Joint With Shock Absorber 1 | Professional CAD Design

.STEP
Free
Ball Bearing 667 | Professional CAD Design
MACHINE DESIGN · BALL BEARING 667

Ball Bearing 667 | Professional CAD Design

.STEP
Free
Sliding Door Lock 3 | Professional CAD Design
MACHINE DESIGN · SLIDING DOOR LOCK 3

Sliding Door Lock 3 | Professional CAD Design

.STEP
Free
Air Conditioner 14 | Professional CAD Design
MACHINE DESIGN · AIR CONDITIONER 14

Air Conditioner 14 | Professional CAD Design

.STEP
Free
Hinge Based Clamping System 1 | Professional CAD Design
MACHINE DESIGN · HINGE BASED CLAMPING SYSTEM 1

Hinge Based Clamping System 1 | Professional CAD Design

.STEP
Free
Spring Mechanism 4 | Professional CAD Design
MACHINE DESIGN · SPRING MECHANISM 4

Spring Mechanism 4 | Professional CAD Design

.STEP
Free
Toggle Clamp 96 | Professional CAD Design
MACHINE DESIGN · TOGGLE CLAMP 96

Toggle Clamp 96 | Professional CAD Design

.STEP
Free
Hhip 1 Ton Arbor Press | High-Quality CAD Model
MACHINE DESIGN · HHIP 1 TON ARBOR PRESS

Hhip 1 Ton Arbor Press | High-Quality CAD Model

.STEP
Free
Dunk Tank - Standard Mechanical Component
MACHINE DESIGN · DUNK TANK

Dunk Tank - Standard Mechanical Component

.STEP