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.

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

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Build kits

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

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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.

9 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.

10 partspairs verified
HARDWARE

Metric Fasteners & Threaded Hardware Pack

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

6 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.

14 partspairs verified
ELECTRONICS PROTOTYPING

Arduino / ESP32 Prototyping Kit

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

13 partspairs verified
ROBOTICS

Robotic Arm + Gripper Kit

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

12 partspairs verified
CNC MACHINING

CNC Workholding & Tooling Kit

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

14 partspairs verified
HVAC / DUCTING

HVAC Ventilation Duct Assembly Kit

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

8 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.

16 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.

16 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.

8 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.

8 partspairs verified
AUTOMOTIVE & MOBILITY

1:10 RC Car Drivetrain & Suspension Kit

A 1:10 RC Car Drivetrain & Suspension Kit cluster covering related CAD components for Automotive & Mobility.

5 partspairs verified
ROBOTICS & MECHATRONICS

Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit

A Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit cluster covering related CAD components for Robotics & Mechatronics.

1 partpairs verified
MOTORS & POWER TRANSMISSION

Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit

A Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit cluster covering related CAD components for Motors & Power Transmission.

1 partpairs verified
HYDRAULICS & PNEUMATICS

Belt & Roller Conveyor Design Kit

A Belt & Roller Conveyor Design Kit cluster covering related CAD components for Hydraulics & Pneumatics.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Centrifugal Pump & Motor Skid Kit

A Centrifugal Pump & Motor Skid Kit cluster covering related CAD components for Pumps & Fluid Systems.

8 partspairs verified
GENERAL ENGINEERING

Honda C-Series Engine Parts Pack

A Honda C-Series Engine Parts Pack cluster covering related CAD components for General Engineering.

4 partspairs verified
VALVES & FLOW CONTROL

Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack

A Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

1 partpairs verified
ENCLOSURES & PANELS

IP65/IP67 Electrical Enclosure & Control Panel Pack

A IP65/IP67 Electrical Enclosure & Control Panel Pack cluster covering related CAD components for Enclosures & Panels.

9 partspairs verified
GENERAL ENGINEERING

Industrial Gearmotor & Drive Kit

A Industrial Gearmotor & Drive Kit cluster covering related CAD components for General Engineering.

9 partspairs verified
VALVES & FLOW CONTROL

Industrial Valve & Actuation Pack

A Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Peristaltic / Dosing Pump Prototyping Kit

A Peristaltic / Dosing Pump Prototyping Kit cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
ROBOTICS & MECHATRONICS

Raspberry Pi Case & Display Kit

A Raspberry Pi Case & Display Kit cluster covering related CAD components for Robotics & Mechatronics.

6 partspairs verified
ENGINES & POWERTRAIN

Superquadro Engine Internals Kit

A Superquadro Engine Internals Kit cluster covering related CAD components for Engines & Powertrain.

4 partspairs verified
PUMPS & FLUID SYSTEMS

Vacuum Pump System Pack

A Vacuum Pump System Pack cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
10,000+ models2D drawings
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Free
T8 Trapezoidal Lead Screw Nut Housing Bracket for Linear Slider
MACHINE DESIGN · T8 LEAD SCREW

T8 Trapezoidal Lead Screw Nut Housing Bracket for Linear Slider

.STEP
Free
AISI 1020 Steel Part with Revolve Boss and Helix Structure
MACHINE DESIGN · AISI 1020 STEEL

AISI 1020 Steel Part with Revolve Boss and Helix Structure

.STEP
Free
High-Precision Alloy Steel Mechanical Component with Boss and Cut Extrudes
MACHINE DESIGN · ALLOY STEEL

High-Precision Alloy Steel Mechanical Component with Boss and Cut Extrudes

.STEP
Free
High-Quality Alloy Steel Mechanical Component with Boss and Cut Extrudes
MACHINE DESIGN · ALLOY STEEL

High-Quality Alloy Steel Mechanical Component with Boss and Cut Extrudes

.STEP

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Detailed Horse Skeleton Model with Bone-like Mechanical Properties
MEDICAL · HORSE SKELETON

Detailed Horse Skeleton Model with Bone-like Mechanical Properties

.STEP
Free
Parts Express BT 30 Watt Stereo Amplifier Board Model
ELECTRICAL · STEREO AMPLIFIER

Parts Express BT 30 Watt Stereo Amplifier Board Model

.STEP
Free
IP68 Rated Outdoor Enclosure Box for IoT Applications
ELECTRICAL · IP68

IP68 Rated Outdoor Enclosure Box for IoT Applications

.STEP
Free
Robotic Cell Industrial Automation System
ROBOTICS · ROBOTIC CELL

Robotic Cell Industrial Automation System

.STEP
Free
Filament Identification Tags and Holder for AMS 3D Printers
3D PRINTING · FILAMENT TAGS

Filament Identification Tags and Holder for AMS 3D Printers

.STEP
Free
Filament Change Code for Multi-Color 3D Printing Layers
3D PRINTING · FILAMENT CHANGE

Filament Change Code for Multi-Color 3D Printing Layers

.STEP
Free
Multi-Tool Organizer with Labeled Slots for Hand Tools and Drivers
INDUSTRIAL DESIGN · MULTI-TOOL ORGANIZER

Multi-Tool Organizer with Labeled Slots for Hand Tools and Drivers

.STEP
Free
Automotive Part Model for Reliable Vehicle Performance
AUTOMOTIVE · AUTOMOTIVE PART

Automotive Part Model for Reliable Vehicle Performance

.STEP
Free
Soviet State Quality Mark Symbol for Industrial Certification
INDUSTRIAL DESIGN · SOVIET STATE QUALITY MARK

Soviet State Quality Mark Symbol for Industrial Certification

.STEP
Free
BIGTREETECH TMC5160T Plus High-Power Stepper Motor Driver Module
ROBOTICS · BIGTREETECH TMC5160T PLUS

BIGTREETECH TMC5160T Plus High-Power Stepper Motor Driver Module

.STEP
Free
4x4 Matrix Keypad for Microcontroller Projects and Access Control
ELECTRICAL · 4X4 MATRIX KEYPAD

4x4 Matrix Keypad for Microcontroller Projects and Access Control

.STEP
Free
Universal Adjustable Marking Square for Precise Angle Setting
MACHINE DESIGN · UNIVERSAL ADJUSTABLE MARKING SQUARE

Universal Adjustable Marking Square for Precise Angle Setting

.STEP
Free
Industrial Belt Conveyor System for Material Handling
INDUSTRIAL DESIGN · BELT CONVEYOR

Industrial Belt Conveyor System for Material Handling

.STEP
Free
Laser Tree Dovetail Mount for CNC Laser Systems
3D PRINTING · LASER TREE DOVETAIL MOUNT

Laser Tree Dovetail Mount for CNC Laser Systems

.STEP
Free
Protective Case and Lid for Garmin Z82 Laser Rangefinder
GARMIN Z82

Protective Case and Lid for Garmin Z82 Laser Rangefinder

.STEP
Free
Automated Bottle Filling Machine Prototype with Conveyor and Pump System
MACHINE DESIGN · AUTOMATED BOTTLE FILLING MACHINE

Automated Bottle Filling Machine Prototype with Conveyor and Pump System

.STEP
Free
Differential Mechanism Swerve Drive for Dynamic Power Allocation
ROBOTICS · DIFFERENTIAL MECHANISM

Differential Mechanism Swerve Drive for Dynamic Power Allocation

.STEP
Free
3D Print-in-Place Fidget Rings with Stand for Prototyping
3D PRINTING · 3D PRINT-IN-PLACE

3D Print-in-Place Fidget Rings with Stand for Prototyping

.STEP