There are 4 main groups of parts needed to build the AR4 robot:

When placing your order please add any necessary VAT or EORI numbers for overseas orders in the order notes section.

1. AR4 Combo Kit

This includes all the aluminum structural components, hardware components and primary electrical components.

2. Stepper Motors and Drivers

These are available at the lowest price; factory direct from Stepperonline (see link on this page).

3. 3D Printed Components

You will need to 3D print your covers and spacers in any color you choose.

4. Gripper or Tool Holder

You can install any type of gripper or tool holder you need, kits for a pneumatic and servo gripper are available options (see link on this page).

Ask Pre-sale Question

View Product Page

Category: Robot Kits

AR4 MK3 Robot Combo Kit

The AR4 MK3 Robot Combo Kit is the ultimate solution for industrial robotics education. This complete package contains everything needed to build a professional 6-axis robotic arm, including 26 precision-machined aluminum components, high-quality motors, and all necessary hardware. Perfect for STEM programs and automation training, the AR4 MK3 Robot Combo Kit offers hands-on experience with industrial-grade robotics technology. Educators and students will appreciate the kit’s comprehensive design, which requires no additional structural components. For makers and engineers, the AR4 MK3 Robot Combo Kit serves as an affordable platform for developing real-world automation skills.

$1,329.00

Category: Stepper

Complete AR4 MK3 stepper-motor, driver & power supply package – factory direct from Stepperonline

Purchase at StepperOnline

View Product Page

Category: Robot Kits

AR4 MK3 Aluminum Parts Kit

The aluminum parts kit for the AR4 MK3 robot includes 26 machined aluminum pieces that serve as the primary structural components for assembly. The kit provides the necessary metal parts to build the robot’s framework.

$820.00

View Product Page

Category: Robot Kits

AR4 MK3 Hardware Kit

$429.00

View Product Page

Category: Robot Kits

AR4 MK3 Electrical Parts Kit

$230.00

View Product Page

Category: Robot Kits

Pneumatic Gripper Parts Kit

This kit contains the primary components to add a pneumatic gripper to the AR4 robot. Please note the kit does not include the 24vdc power brick. The power brick can be purchased from Stepperonline or other online retailers. It uses the same power brick as the robot.

$152.50

View Product Page

Category: Robot Kits

Servo Gripper Parts kit

$84.50

View Product Page

Category: Robot Kits

AR4 Modbus PLC upgrade option

This add on option has the RS485 TTL board, wires, screws and RJ45 Keystone jack to add Modbus PLC communication for your robot.

$16.00

View Product Page

Category: Robot Kits

AR4 MK3 CAD Models – SOLIDWORKS & .STEP files

$99.00

View Product Page

Category: Robot Kits

HTD Series Belt Update for Joint 3

$32.50

View Product Page

Category: Robot Kits

J6 Housing and Gripper Mount – for upgrading to MK3 from previous versions

$38.50

SHOP ROBOT KITS

View Product Page

Category: Robot Kits

AR4 MK3 Robot Combo Kit

$1,329.00

Category: Stepper

Complete AR4 MK3 stepper-motor, driver & power supply package – factory direct from Stepperonline

Purchase at StepperOnline

View Product Page

Category: Robot Kits

AR4 MK3 Aluminum Parts Kit

$820.00

View Product Page

Category: Robot Kits

AR4 MK3 Hardware Kit

$429.00

View Product Page

Category: Robot Kits

AR4 MK3 Electrical Parts Kit

$230.00

View Product Page

Category: Robot Kits

Pneumatic Gripper Parts Kit

$152.50

View Product Page

Category: Robot Kits

Servo Gripper Parts kit

$84.50

View Product Page

Category: Robot Kits

AR4 Modbus PLC upgrade option

This add on option has the RS485 TTL board, wires, screws and RJ45 Keystone jack to add Modbus PLC communication for your robot.

$16.00

View Product Page

Category: Robot Kits

AR4 MK3 CAD Models – SOLIDWORKS & .STEP files

$99.00

View Product Page

Category: Robot Kits

HTD Series Belt Update for Joint 3

$32.50

View Product Page

Category: Robot Kits

J6 Housing and Gripper Mount – for upgrading to MK3 from previous versions

$38.50

AR4 in the Classroom
Building Future Engineers

Trusted by top universities, technical schools, and aspiring engineers worldwide, the Annin Robotics AR4 brings industrial-grade automation to the classroom and beyond. Compact enough for any desk but built for real-world tasks, the AR4 6DOF robot bridges the gap between theory and practice.

Students are using the AR4 to master robotics fundamentals, prototype automation solutions, and compete in class projects.

Its accessible design (machined or 3D-printed) and industry-standard programming (Python, ROS) prepare learners for careers in mechatronics, manufacturing, and AI.