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HTD Series Belt Update for Joint 3

$32.50

This combo kit provides all the primary structural and hardware components to build the robot. You do need to purchase the motors and drivers factory direct from Stepperonline. To keep the AR4 project as low cost as possible I dont mark these up, add any taxes, tariffs or additional shipping fees - purchasing the motors direct keeps the robot cost as low as possible. You also need to 3D print a number of the covers and spacers - this also keeps the project cost as low as possible not having to pay for injected molded components.

This includes the long and short HTD-20 pulleys and HTD 550-5M belt for the AR4 robot. These parts come with the robot combo kit and hardware kit.

This update is only needed if you have previously built the AR4 robot and would like to upgrade your belt and pulleys.
View the Robot Build Manual
Your complete online reference. Includes full assembly instructions, wiring diagrams, and technical specs. Always up to date, perfect for printing or workshop use.
Did you know? 👋
We have a ton of free resources to help you build the AR4 robot?
AR4 Robot Build Resources
Master your AR4 robot from build to advanced programming. Our ecosystem provides step-by-step guidance with the Build Manual, continuous learning through Tutorials & Courses, instant answers in the Knowledge Base, and direct support from our Community and Legacy Forums.
Additional Products

AR4 MK4 Robot Combo Kit

From $1,329.00

Add a Gripper or Tool Holder?
Pneumatic Gripper Parts Kit
Pneumatic Gripper Parts Kit
$152.50
Servo Gripper Parts kit
Servo Gripper Parts kit
$84.50
Additional Options
AR4 Modbus PLC upgrade option
AR4 Modbus PLC upgrade option
$16.00
AR4 MK3 CAD Models - SOLIDWORKS & .STEP files
AR4 MK3 CAD Models - SOLIDWORKS & .STEP files
$99.00

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

AR4 MK4 Aluminum Parts Kit

$820.00

AR4 MK4 Hardware Kit

$429.00

AR4 MK4 Electrical Parts Kit

$230.00

Pneumatic Gripper Parts Kit

$152.50

Servo Gripper Parts kit

$84.50

AR4 Modbus PLC upgrade option

$16.00

AR4 MK3 CAD Models – SOLIDWORKS & .STEP files

$99.00

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