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

AR4 MK3 Combo Kit - This includes all the aluminum structural components, hardware components and primary electrical components.
Stepper Motors and Drivers - These are available at the lowest price; factory direct from Stepperonline (see link on this page).
3D Printed Components - You will need to 3D print your covers and spacers in any color you choose.
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).

AR4 MK3 Combo Kit - This includes all the aluminum structural components, hardware components and primary electrical components.

Stepper Motors and Drivers - These are available factory direct from Stepperonline - I don't resell, add tax, tariffs or additional cost - to keep the cost as low as I can for everyone I recommend buying direct from Stepperonline. (see link on this page).

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).

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

VIEW THE TUTORIALS PAGE FOR A COMPLETE RUNDOWN ON HOW TO BUILD THE AR4 ROBOT 👉

View Tutorials

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

Important Shipping Notice for Orders:
Please note that our team will be away from May 30th through June 7th. You are welcome to place orders during this time, but please be aware that all AR4 purchases made during this window will begin shipping on Monday, June 8th.
Thank you for your patience and support!

AR4 MK3 Combo Kit - This includes all the aluminum structural components, hardware components and primary electrical components.
Stepper Motors and Drivers - These are available at the lowest price; factory direct from Stepperonline (see link on this page).
3D Printed Components - You will need to 3D print your covers and spacers in any color you choose.
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).

View Product Page

Category: Robot Kits

AR4 MK4 Robot Combo Kit

The AR4 MK4 Robot Combo Kit is a versatile and professional 6-axis robotic arm, engineered for both real-world applications and education.

The AR4 MK4 is capable of automation solutions for makers, engineers, and manufacturers, thanks to its robust 4.15lb payload capacity.

This kit provides an affordable, hands-on platform for developing automation skills, prototyping work cells, or deploying actual light-duty tasks.

From $1,189.00

Add a Gripper or Tool Holder?

Pneumatic Gripper Parts Kit

$139.00

Servo Gripper Parts kit

$74.50

Additional Options

AR4 Modbus PLC upgrade option

$16.00

AR4 MK4 CAD Models - SOLIDWORKS & .STEP files

$99.00

Category: Stepper

Complete AR4 MK3 & MK4 stepper-motor, driver & power supply package – factory direct from Stepperonline

Purchasing the motors and drivers direct from Stepperonline keeps the project cost as low as possible. I don't mark these up, add tax, tariffs or additional shipping. Please find the AR4 motors and drivers kit factory direct using this link

Purchase at StepperOnline

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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.

$139.00

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Category: Robot Kits

Servo Gripper Parts kit

This kit includes the servo, nano board, breakout board, current limit sensor, power supply, cables, wires and hardware needed to build the AR4 servo gripper. Please note the kit does not include the 3D printed components as you will need to print these on your 3D printer.

This Robot kit does NOT include

3D Printed Components – Purchase at approved third-party vendor, C.I. Printing Services

$74.50

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Category: Robot Kits

AR4 MK4 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.

$699.00

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Category: Robot Kits

AR4 MK4 Hardware Kit

$319.00

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Category: Robot Kits

AR4 MK4 Electrical Parts Kit

$229.00

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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 MK4 CAD Models – SOLIDWORKS & .STEP files

$99.00

View Product Page

Category: Robot Kits

HTD Series Belt Update for Joint 3

$32.50

3D printed parts by C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 Robot Clear Arm Covers

Upgrade your current AR4 or start it off with this clear side panel kit so you can see all the movements of your precision robot build. The kit includes two clear side panels to replace the 3D printed ones and utilizes the original fasteners. These are made from scratch resistant and UV resistant optically clear acrylic. Each part is manufactured to the exact specifications required for the Annin Robotics AR4, ensuring seamless compatibility and performance.

DO NOT overtighten the fasteners or you will crack the plastic.

Disclaimer: Parts may show slight surface variations or minor cosmetic imperfections due to the lasering process. These do not affect the structural integrity or functionality of the parts.

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Lavender

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Disclaimer: 3D printed parts may show slight surface variations or minor cosmetic imperfections due to the printing process. These do not affect the structural integrity or functionality of the parts.

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Dark Gray

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Magenta

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Maroon

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Dark Blue

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Gray

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Yellow

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Pink

This set is only compatible with the AR MK3 robot.

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – White

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Red

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Black

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

View Product Page

Category: 3D Printed CoversRobot Kits

AR4 MK3 Robot 3D Printed Parts Set – Blue

Key Features

High quality PETG filament
Every 3D printed part necessary to complete the build
Save time and get your robot completed quickly
Structural parts, or parts with threads, are printed with 5 perimeter layers and 25% infill. Making them extremely strong
Non-Structural parts are printed with 4 perimeter layers and 25% infill. Which means the simple parts are even overbuilt
Manufactured to meet, or exceed, the specifications Annin Robotics requires for the AR4 robot build
Higher quality and durability than other generic 3D printing sites that don’t allow you to specify the level of quality and strength

Shop at C.I. Printing Services

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

AR4 MK4 Robot Combo Kit

Complete AR4 MK3 & MK4 stepper-motor, driver & power supply package – factory direct from Stepperonline

Pneumatic Gripper Parts Kit

Servo Gripper Parts kit

AR4 MK4 Aluminum Parts Kit

AR4 MK4 Hardware Kit

AR4 MK4 Electrical Parts Kit

AR4 Modbus PLC upgrade option

AR4 MK4 CAD Models – SOLIDWORKS & .STEP files

HTD Series Belt Update for Joint 3

AR4 Robot Clear Arm Covers

AR4 MK3 Robot 3D Printed Parts Set – Lavender

AR4 MK3 Robot 3D Printed Parts Set – Dark Gray

AR4 MK3 Robot 3D Printed Parts Set – Magenta

AR4 MK3 Robot 3D Printed Parts Set – Maroon

AR4 MK3 Robot 3D Printed Parts Set – Dark Blue

AR4 MK3 Robot 3D Printed Parts Set – Gray

AR4 MK3 Robot 3D Printed Parts Set – Yellow

AR4 MK3 Robot 3D Printed Parts Set – Pink

AR4 MK3 Robot 3D Printed Parts Set – White

AR4 MK3 Robot 3D Printed Parts Set – Red

AR4 MK3 Robot 3D Printed Parts Set – Black

AR4 MK3 Robot 3D Printed Parts Set – Blue

AR4 in Industry

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