Linear Actuator with Flexible Stroke & PCB Endstop — 3D CAD Files & STEP Download

Monday, November 10, 2025

Linear Actuator with Flexible Stroke & PCB Endstop — 3D CAD Download

Discover a practical linear actuator CAD model that features a flexible stroke and a mechanical limit switch mounted on a PCB. This assembly was created for easy integration with common motion hardware such as V-slot profiles, MG12H linear guides, and T8 lead screws. The downloadable package typically includes STEP/STEP AP203 files, assembly parts, and measurements useful for CNC or 3D-printed fixtures.

Overview

This linear actuator design is ideal for mechatronics projects, small automation tasks, and classroom demonstrations where a compact endstop and adjustable travel are required. The model demonstrates how to mount a mechanical endstop (limit switch) directly on a PCB and how to couple the mechanism to standard profiles (V-slot) and MG12H rails.

What’s included

• Full assembly with parts (STEP / STL where available)
• Mounting details for V-slot and MG12H guides
• Endstop (mechanical limit switch) mounting on PCB
• Dimensions and recommended hardware (T8 lead screw, stepper coupling)

How to use

Download the files, open the assembly in your CAD software, and verify dimensions against your selected linear guide and lead screw. Use the included PCB mounting holes to fit a small switch for endstop detection — perfect for low-cost motion control and prototyping.

Keywords (naturally used in the copy)

linear actuator, CAD model download, flexible stroke actuator, mechanical endstop, PCB limit switch, V-slot profile, MG12H linear guide, T8 lead screw, STEP files, 3D CAD assembly

Download / Source

Original model and download files available on GrabCAD (author: Luca Delbarba). See the model page for STEP/STL downloads and licensing details. GrabCAD — Linear actuator with flexible stroke & PCB endstop.

Continue Reading | ความคิดเห็น

Free Download! 🏭 3D Model of an Automatic Sorting System for Industrial Applications

Wednesday, October 15, 2025

 

Free Download! 🏭 3D Model of an Automatic Sorting System for Industrial Applications

Smart Factory Design: Complete Sorting System Assembly CAD File

STEP/IGES File for Automation! Includes Linear Guides, Stepper Motors, and Pneumatic Actuators

Introducing the importance of automated sorting systems in the Industry 4.0 era, which increase efficiency and reduce errors in production lines and warehouses.

This "Automatic Sorting System" model is an assembly that demonstrates the complete sorting mechanism, from guidance to actuator sorting.

Linear Guide System: Uses a standard V-slot profile with linear guides for precise movement.

Precise Drive System: Uses a NEMA 17 stepper motor driven by a Tr8 trapezoidal screw for precise position control, ideal for applications requiring high accuracy.

Pneumatic Sorting Mechanism: A compact pneumatic cylinder (Metalworks brand) equipped with a silicone suction cup is used to grip or push the workpiece during sorting.

Adaptability: The STEP/IGES model file allows designers to easily study the structure and apply it to various types of machinery, such as sorters by size, color, or type.

Design of a sorting system in a parts manufacturing plant

Building robots or tools for mechatronics and automation projects

Simulation kit for studying the design of linear motion systems and pneumatic systems

3D Automatic Sorting System file download link:

https://grabcad.com/library/automatic-sorting-system-1

Tips: The CAD file contains multiple parts. Please log in to GrabCAD to download the main assembly.

File Format: STEP/IGES, Rendering

This model is an excellent resource for those interested in designing complex automation systems using a variety of drive technologies.

Product Name: Sorting System, Sorting System, Automatic Sorter, Sorting Machine

Drive Mechanism: Linear Guide, Stepper Motor, NEMA 17, Trapezoidal Screw, Tr8 Screw, Pneumatic Cylinder

V-Slot Components, Silicone Suction Cup, Linear Motion, Metalworks

3D Technology/CAD Applications, 3D Model, Automation, Mechatronics, Industrial Design, Engineering

Common Search Terms: Free Download, Free Download, STEP File, Factory Automation, Conveyor System

Continue Reading | ความคิดเห็น

Free Download! 🔩 3D Model of Anti-Rotation System for Pneumatic Cylinders

  

Free Download! 🔩 3D Model of Anti-Rotation System for Pneumatic Cylinders

Enhanced Pneumatic Control: CAD File for Anti-Rotation Stem for Cylinders

Reduce shaft twisting! Get STEP/IGES File for Anti-Rotation System for Pneumatic Cylinder Rods

Introduction to a common problem in standard pneumatic cylinders: The piston rod/stem often rotates, preventing the ability to securely mount components requiring precise alignment.

This model is introduced as an "add-on anti-rotation system" designed to prevent the piston rod of a pneumatic cylinder from rotating during extension and contraction, enhancing stability and accuracy for automation applications.

Solve Rotation Problems: Specially designed to maintain a constant piston rod alignment throughout its stroke.

Improved Accuracy: Enables highly accurate clamping of components (such as clamps or tools) at the piston rod end. Ideal for pick-and-place or stamping applications.

Complete Assembly: This model shows all the parts required to assemble the anti-rotation system into a pneumatic cylinder body.

Standard CAD File: Includes STEP/IGES files that can be scaled or designed to fit the various sizes of pneumatic cylinders used in your plant or project.

Automation applications requiring constant device orientation (e.g., screw tightening, printing)

Pick-and-place systems in industrial robots

Simulation of complex pneumatic systems for mechatronics studies

3D Pneumatic Cylinder Stem Anti-Rotation System file download link:

https://grabcad.com/library/pneumatic-cylinder-stem-anti-rotation-system-1

Tips: Please log in to GrabCAD to access the file.

This model highlights the key to elevating conventional pneumatic cylinders to the level of performance of more expensive specialized cylinders.

Product Name Anti-Rotation System, Stem Lock, Cylinder Rod Guide, Spindle Protection System

Pneumatic Mechanism, Cylinder, Actuator, Automation, Pneumatic, Cylinder

3D Technology/CAD Applications, 3D Model, Assembly, Industrial Automation, Mechatronics, Engineering

Common Search Terms: Free Download, Free Download, STEP File, Factory Automation, Precision

Continue Reading | ความคิดเห็น

Free Download! ⚙️ 3D Model of a Dual Motor Shaft Drive System for High-Torque Cars/Robots

 

Free Download! ⚙️ 3D Model of a Dual Motor Shaft Drive System for High-Torque Cars/Robots

Increase Your Drive Power: High-Resolution Dual Motor Shaft Drive System Assembly CAD File

Robotics/EV Design: Get the STEP/IGES Dual Motor Shaft Drive System Model

Introduces the challenges of designing drive systems that require high torque or stability with dual shafts, such as in large robots, RC cars, or small electric vehicles.

This model is introduced as a "ready-to-use dual shaft drive system," designed to efficiently combine the power of two motors.

Dual Motor Drive System: The assembly model demonstrates the combination of two motors to increase torque and reduce the load on each motor.

Shaft Drive: This model emphasizes power transmission via shafts and may incorporate gears or timing belts to reduce revolutions and transmit power to the main drive shaft.

Design Flexibility: STEP/IGES model files allow engineers and designers to adapt them to other motors of similar size or quickly adjust gear ratios.

Ideal for Heavy-Duty Applications: A great starting point for designing drive systems that require durability and high efficiency in robotics and mechatronics.

Mobile Robotics Project

Powertrain System for Small Vehicles (Mini EV/RC Car)

Drivetrain Design Simulation Kit

3D Dual Motor Shaft Drive System Download Link:

https://grabcad.com/library/dual-motor-shaft-drive-system-1

Tips: The file is in STEP format. Please log in to GrabCAD to download.

This complete assembly model will save you significant time designing complex mechanical systems.

Product Name: Dual Motor Drive, Shaft Drive, Dual Drive System, Drivetrain, Power Transmission

Motor Drive Mechanism, Dual Shaft, Gear System, Timing Belt, Drive Shaft, High Torque

3D Technology/CAD Applications, 3D Model, Assembly, Robotics, Mechatronics, CNC, Engineering, EV

Common Search Terms: Free Download, Free Download, STEP File, Mechanical Design, High Power

 

Continue Reading | ความคิดเห็น