Explore the 4-DOF ZKBOT-304ed desktop robotic arm. Built with all-metal gears, 0~270° wrist orientation, dual PC/touchscreen control, and industrial PLC handshaking.
Payload
1 KG
Reach
340mm
Repeatability
±1mm
End Speed
-
Engineered with an Integrated Rotary Wrist for Precision Orientation Alignment and Advanced Automation Education
The ZKBOT-304ed is an advanced 4-axis intelligent educational desktop robotic arm engineered for technical universities, vocational institutions, and robotics laboratories. Expanding upon the 3-axis foundation, it integrates a dedicated 4th rotational axis (0~270° wrist motion) with a 0.5 kg payload capacity, enabling true angular adjustment and orientation alignment. Driven by NEMA 17 stepper motors, all-metal spur gearboxes, and an electromechanical holding brake on Axis 2, the system supports dual-mode operation via an onboard touchscreen teach pendant and PC host software. Featuring built-in Point-to-Point (PTP), continuous linear interpolation, path offsetting, and palletizing algorithms, along with 24V 6DI / 6DO industrial interfaces, the ZKBOT-304ed is an ideal training platform for multi-axis kinematics, PLC cell coordination, and vision-guided orientation alignment.
Integrated 270° End-Effector Rotation: The 4th axis provides a 0~270° rotation range, delivering essential orientation control (Yaw) for simulated precision assembly, component angular alignment, rotary sorting, and specialized labeling tasks.
Axis 2 Electromagnetic Holding Brake: Features a power-off holding brake on the shoulder axis. In the event of an emergency stop or power interruption, the mechanical structure is automatically locked to prevent arm sagging, protecting tabletop setups, end-effectors, and workpieces.
Flexible Dual-Mode Interaction: Equipped with a responsive 4-inch serial touchscreen teach pendant for manual jogging and direct point programming, while fully compatible with PC host software for complex multi-axis trajectory scripting, parameter visualization, and classroom demonstrations.
Dual Coordinate Systems & Embedded Algorithms: Supports dynamic switching between Joint and World (Cartesian) coordinate systems, driven by embedded motion algorithms including Point-to-Point (PTP), smooth linear interpolation, coordinate offsetting, and multi-tier matrix palletizing.
Industrial 24V 6DI / 6DO Interface: Outfitted with 6 digital inputs and 6 digital outputs (24V/0V logic), alongside USB serial and Bluetooth interfaces. Allows direct multi-signal interfacing with external sensors, automated conveyors, and mainstream industrial PLCs (including Siemens, Mitsubishi, and Omron controllers).
Compact, High-Density Benchtop Deployment: Weighing 6.0 kg with an ultra-low maximum operating power consumption of 50 W, the robot supports benchtop and floor installation, facilitating rapid, space-efficient laboratory deployment across multi-student workstations.
| Specification Category | Technical Parameters |
| Product Model | ZKBOT-304ed (4-Axis Intelligent Interactive Educational Desktop Robot) |
| Degrees of Freedom (DOF) | 4-DOF (4 Axes: 3-Axis Arm + 1-Axis Rotary Wrist) |
| Rated Payload | 0.5 kg |
| Pose Repeatability | ±1.0 mm |
| Working Radius (Reach) | 340 mm |
| Max Joint Speed | Axis 1 (Base): 160°/s Axis 2 (Shoulder): 180°/s Axis 3 (Elbow): 180°/s Axis 4 (Wrist Roll/Yaw): 150°/s |
| Joint Motion Range | Axis 1 (Base): -160° to +160° Axis 2 (Shoulder): -90° to 0° Axis 3 (Elbow): -108° to 0° Axis 4 (Wrist): 0° to 270° |
| Actuation & Powertrain | NEMA 17 Stepper Motors + Precision Spur Gearboxes + Axis 2 Power-Off Holding Brake |
| Control Methods & Display | 4-Inch Serial Touchscreen Teach Pendant + PC Host Software Programming |
| Motion Planning & Algorithms | Point-to-Point (PTP), Linear Interpolation, Linear Offset, Palletizing Function |
| Coordinate Systems | Joint Coordinate System, World Coordinate System (Cartesian) |
| Industrial I/O & Connectivity | 24V/0V Digital I/O (6x DI, 6x DO), USB Serial Port, Bluetooth Interface |
| Electrical Specifications | Drive Supply: 24V DC | Input Voltage: AC 110V / 220V | Max Power Consumption: 50 W |
| Environmental & Physical Specs | Operating Temperature: -10°C to 50°C | Net Weight: 6.0 kg |
| Mounting Configurations | Desktop / Floor Mounting |
1x Robotic Arm Body (ZKBOT-304ed)
1x Integrated Control Box
1x 4-Inch Serial Touchscreen Teach Pendant
Tailored for advanced laboratory coursework in Robotics Engineering, Mechatronics, Electrical Automation, and Intelligent Manufacturing. Offers comprehensive validation for 4-axis spatial kinematics, inverse kinematics solving, and end-effector orientation planning.
Utilizes a multi-channel 24V 6DI / 6DO industrial interface to establish robust hardware interlocking, recipe-based execution, and closed-loop handshaking with mainstream industrial PLCs (including Siemens S7-1200, Mitsubishi FX Series, and Omron controllers).
Serves as a desktop execution unit for collegiate engineering contests, simulated assembly workcells, angular workpiece alignment, precision trajectory plotting, and automated conveyor palletizing challenges.
Pairs with machine vision sensors and open-source image processing frameworks to conduct applied research on 2.5D spatial positioning, dynamic workpiece angle recognition, rotational pose correction, and automated barcode/QR-code scanning workflows.
Explores forward and inverse kinematics using the teach pendant and PC software. Students master coordinate transformations between Joint and World (Cartesian) spaces, analyze kinematic reachability, and program synchronized 4-axis motions involving simultaneous translation and wrist rotation.
Focuses on industrial hardware integration using the 24V 6DI / 6DO terminals. Students write PLC ladder logic to trigger automated motion cycles, implement binary recipe selection, process safety interlocks, and monitor real-time execution telemetry.
Leverages built-in linear interpolation and palletizing algorithms combined with 4th-axis angle regulation. Enables students to simulate industrial assembly tasks requiring rotational alignment, component insertion positioning, and structured multi-layer palletizing.
Integrates optical cameras with host software via USB serial or Bluetooth protocols. Students implement computer vision algorithms to detect part position and planar orientation angles, driving the 4-axis arm to execute real-time pose adjustment and precision pick-and-place routines.
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