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Industrial Robots 4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)
4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)
4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)
4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)
4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)
4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)

4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)

MODEL: ZKG4V90L3

The ZEKEEP ZKG4V90L3 is a 4-axis industrial servo high-speed robot arm with a 3 kg rated payload, 717 mm maximum working radius and ±0.05 mm repeatability. Equipped with four absolute encoder servo motors, four high-precision helical gear reducers, an independent end-effector rotation axis, a three-axis braking system, a 7-inch touchscreen teach pendant and 10 DI / 10 DO interfaces, it supports point-to-point, linear, circular, offset and palletizing motion. Designed for metal stamping, machine loading and unloading, precision picking, material handling, palletizing, labeling and vision-guided industrial automation applications.

Payload

3 KG

Reach

717mm

Repeatability

±0.05mm

End Speed

1200mm/s

Product Highlights

ZEKEEP ZKG4V90L3 4-Axis Industrial Servo High-Speed Robot Arm

3 kg Rated Payload × 1600 mm/s High-Speed Motion × ±0.05 mm Repeatability — Supporting Efficient Industrial Automation.

The ZEKEEP ZKG4V90L3 is a four-axis industrial servo high-speed robot arm designed for light-payload industrial automation. It features a four-degree-of-freedom joint structure, combined with absolute encoder servo motors, high-precision reduction mechanisms and an integrated mechanical design. It can perform workpiece picking, material handling, machine loading and unloading, palletizing and vision-guided positioning tasks.


The robot arm has a rated payload of 3 kg, a maximum working radius of 717 mm and a repeatability of ±0.05 mm. Its maximum TCP point-to-point speed is 1600 mm/s, while its maximum TCP linear speed is 1200 mm/s. The fourth-axis end-effector rotation mechanism allows the orientation of the tool and workpiece to be adjusted, making it suitable for picking, positioning and placement operations from different orientations.


The drive system uses absolute encoder servo motors with different power ratings, including 750W, 400W and 100W configurations. These motors drive the base, left and right arm sections, and end-effector joint respectively. The system is equipped with four high-precision helical gear reduction mechanisms. Combined with customized bearings, reinforced belt transmission and an aluminum alloy integrated die-cast body, the design supports motion stability, structural strength and long-term operation.


For motion control, the robot arm is equipped with a 7-inch touchscreen teach pendant. It supports point-to-point, linear, circular, offset and palletizing motion functions, together with world and joint coordinate systems. Users can create independent programs through the teach pendant, with up to 200 teaching points per program, making it suitable for recording and executing multi-process motion sequences.


For system integration, the robot arm provides 10 digital inputs (DI) and 10 digital outputs (DO), together with an open serial communication protocol. It can connect to peripheral sensors, PLCs, conveyor equipment and vision systems. Integration with Hikvision vision systems or OpenCV camera development solutions can support applications such as target recognition, spatial positioning and vision-guided material handling.


In addition, the absolute encoder servo motors feature built-in position memory, which can reduce repeated homing after power recovery. Together with the three-axis full braking system, these functions provide corresponding support for equipment protection and operation recovery.


With high-speed motion, repeatability, a 3 kg payload capacity and an open control architecture, the ZKG4V90L3 is suitable for light-payload industrial automation applications that require a combination of operating efficiency, consistent positioning and system integration capabilities.


Key Features and Product Highlights

1. 3 kg Rated Payload for High-Speed Material Handling

Designed for light-payload industrial applications, supporting efficient material handling.

The robot arm has a rated payload of 3 kg and a maximum working radius of 717 mm. It is suitable for workpiece picking, material handling, machine loading and unloading, and palletizing tasks that meet its payload and working envelope requirements.

With different servo motor power configurations across the joints, the robot can perform repetitive industrial operations according to specific application requirements.


2. Maximum TCP Point-to-Point Speed of 1600 mm/s for Efficient Operation

High-speed servo motion supports improved operating efficiency.

The maximum TCP point-to-point speed is 1600 mm/s, and the maximum TCP linear speed is 1200 mm/s.

Combined with the four-axis structure and multiple trajectory control functions, the robot can be used in automated processes that require rapid position transfer, workpiece handling and repetitive pick-and-place operations.


3. ±0.05 mm Repeatability for Consistent Operations

High-precision positioning for repeatable industrial tasks.

The robot arm has a repeatability of ±0.05 mm and can be used for small-component picking, positioning, placement and repetitive loading and unloading tasks.

Combined with high-precision reduction mechanisms and servo drive control, the system supports consistent positioning during repeated operation.


4. Absolute Encoder Servo Motors to Reduce Repeated Homing

Built-in position memory improves the convenience of equipment recovery.

The robot arm uses high-precision absolute encoder servo motors with position memory functionality. After power recovery, the system can use the retained position information to reduce the need for repeated homing, subject to the configured recovery procedure and system status.

Compared with control methods that require the robot to search for its origin again, this can reduce some recalibration and equipment recovery operations.


5. High-Precision Helical Gear Reduction Mechanisms for Stable Transmission

Four high-precision reduction mechanisms support power output and mechanical transmission.

The robot arm is equipped with four high-precision helical gear reduction mechanisms. Together with the absolute encoder servo motors, they provide power transmission for the motion joints.

Combined with precision-machined joints and customized bearing structures, the system is designed to meet the requirements of high-speed movement and repetitive positioning tasks.


6. Three-Axis Full Braking System to Reduce Power-Off Drop Risks

Braking protection is provided at key joints to improve operational safety.

The product uses a three-axis full braking system. In situations such as unexpected power loss, the corresponding joint brakes can provide holding protection and help reduce the risk of the robot arm dropping or the workpiece falling from the end effector.


7. Aluminum Alloy Integrated Die-Cast Body for a Compact and Robust Structure

An integrated structural design balances strength and installation convenience.

The robot arm uses an aluminum alloy integrated die-cast structure with a streamlined appearance and compact overall design. It provides mechanical support while keeping the body structure relatively compact.

Combined with customized bearings and reinforced belt transmission, the structure is designed to support stable long-term operation.


8. 7-Inch Touchscreen Teach Pendant for Intuitive Graphical Operation

Teaching and hand-guided operation make it easier to establish robot programs.

The robot arm comes with a 7-inch touchscreen teach pendant featuring a graphical user interface. It supports position configuration, motion type selection, speed adjustment and teaching point recording.

The system supports five independent programs, with up to 200 points per program, allowing users to create separate motion sequences for different workpieces and processes.


9. Open Serial Communication Protocol for Vision and Peripheral Device Integration

Open communication interfaces support secondary development and automation connectivity.

The robot arm provides a serial communication protocol and 10 DI / 10 DO digital I/O interfaces for connecting PLCs, sensors and peripheral actuators.

It also supports vision integration solutions such as Hikvision vision systems and OpenCV camera development. Combined with recognition results, these systems can obtain workpiece position and orientation information to support vision-guided picking and material handling.


10. Multiple Motion Trajectories for Typical Industrial Applications

Point-to-point, linear, circular, offset and palletizing motion support flexible task configuration.

The robot arm supports point-to-point, linear, joint offset, linear offset, circular and palletizing motion, together with world and joint coordinate systems.

Users can configure movement paths according to different production processes to perform workpiece picking, positioning, handling and organized placement.



11. Flexible Mounting Options for Different Equipment Layouts

Supports desktop and floor mounting for automation workstation integration.

The product supports both desktop and floor mounting. The installation method can be selected according to the layout of production equipment, workbenches and automation lines.

It is suitable for compact industrial production units, stamping machine loading and unloading stations, palletizing workstations and vision inspection equipment integration.

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Frequently Asked Questions (FAQ)

1. What type of industrial robot arm is the ZKG4V90L3?

The ZKG4V90L3 is a four-axis 90H industrial servo high-speed robot arm from ZEKEEP. It uses a four-degree-of-freedom servo-driven structure, combined with absolute encoder servo motors, high-precision reduction mechanisms and a three-axis full braking system. Its main applications include workpiece picking, material handling, machine loading and unloading, palletizing and vision-guided operations.


2. What is the rated payload of this robot arm?

The rated payload is 3 kg. It is suitable for light industrial workpiece picking, transfer and placement tasks that meet the specified payload and working envelope requirements.


3. What is the maximum working radius?

The maximum working radius is 717 mm. Different motion paths can be configured according to workpiece positions and robot arm orientations.


4. What is the repeatability of the robot arm?

The specified repeatability is ±0.05 mm, making the robot suitable for picking, handling and positioning tasks that require consistent repeated positioning.



5. What is the maximum operating speed?

The maximum TCP point-to-point speed is 1600 mm/s, and the maximum TCP linear speed is 1200 mm/s. Actual operating speeds should be configured according to workpiece weight, movement distance, trajectory and safety settings.


6. What type of motors does the robot arm use?

It uses absolute encoder servo motors, configured as one 750W motor, two 400W motors and one 100W motor. These drive the base, left and right arm sections, and end-effector joint respectively.


7. Does the robot arm support recovery after a power interruption?

It supports absolute position memory, which can reduce the need to repeatedly search for the mechanical home position. The actual recovery procedure after a power interruption must follow the control system status and on-site safety requirements.



8. Which motion trajectories does the robot arm support?

It supports point-to-point, linear, joint offset, linear offset, circular and palletizing motion, together with world and joint coordinate systems.


9. Does it support vision-guided picking?

Yes. The robot arm supports integration with external vision systems through its open serial communication protocol. It can be combined with Hikvision vision systems or OpenCV camera development solutions for object recognition, position acquisition and vision-guided picking.

Actual vision recognition capabilities and accuracy depend on the external camera, algorithms, calibration and system integration solution.


10. Can the robot arm connect to PLCs and other automation equipment?

Yes. It provides 10 digital inputs (DI), 10 digital outputs (DO) and a serial communication interface. These can be used to connect the robot to PLCs, sensors and peripheral actuators according to the control architecture.


11. How many programs and motion points does the teach pendant support?

The robot arm is equipped with a 7-inch touchscreen teach pendant. It supports five independent programs, with up to 200 points per program, for recording and managing different operating tasks.


12. Which industrial applications is this robot arm suitable for?

It is suitable for metal stamping, product handling, automatic machine loading and unloading, palletizing, labeling, vision-guided inspection and loading, and compact industrial production lines.


Product Selection and Project Consultation

To select the appropriate robot arm for a production application, it is recommended to clarify the following requirements in advance:

  • Workpiece information: Product dimensions, weight, shape, material and gripping method.

  • Operation type: Metal stamping, machine loading and unloading, material handling, palletizing, labeling or vision-guided picking.

  • Payload requirements: Whether the combined weight of the workpiece and end effector is within the 3 kg rated payload.

  • Working range: Picking position, placement position, installation height and surrounding equipment layout.

  • Cycle time requirements: Movement distance per workpiece, target cycle time and continuous operation requirements.

  • End-effector configuration: Whether an electric gripper, vacuum suction cup, pneumatic gripper or other customized end effector is required.

  • Vision requirements: Whether an industrial camera, target recognition, dimension assessment or 3D positioning is needed.

  • Control integration: Whether communication with PLCs, conveyors, sensors and peripheral devices is required.

  • Installation conditions: Desktop or floor mounting, together with the required safety protection around the equipment.

Based on the product characteristics and actual process requirements, the robot mounting method, end-effector structure, vision solution and control interfaces can be further specified to develop an automation solution suited to the production environment.


Specifications

Core Technical Specifications

Core Specifications of the 4-Axis Servo Robot Arm

ParameterSpecification
Product NameZKG4V90L3 4-Axis 90H Servo High-Speed Robot Arm
Product ModelZKG4V90L3
Product Type4-Axis Industrial Servo High-Speed Robot Arm (3 kg Payload)
Degrees of Freedom (DOF)4 DOF
Rated Payload3 kg
Maximum Working Radius717 mm
Repeatability±0.05 mm
Robot Arm Weight37 kg
Maximum TCP Point-to-Point Speed1600 mm/s
Maximum TCP Linear Speed1200 mm/s
Control MethodTouchscreen Teach Pendant + Hand-Guided Teaching
Drive SystemAbsolute Encoder Servo Motors
Reduction MechanismHigh-Precision Helical Gear Reducers
Brake SystemThree-Axis Full Braking System
Mounting OptionsDesktop Mounting / Floor Mounting
Body MaterialAluminum Alloy
Main ApplicationsIndustrial Material Handling, Machine Loading and Unloading, Palletizing, Metal Stamping, Labeling and Vision-Guided Picking


Joint Motion Ranges and Maximum Speeds

Joint AxisMoving SectionMaximum Motion RangeMaximum Joint Speed
J1Base-162° to +162°280°/s
J2Shoulder-115° to 0°240°/s
J3Elbow-115° to 0°200°/s
J4End Effector-162° to +162°162°/s

The four-axis structure coordinates the movements of the base, upper arm, forearm and end-effector joint to perform workpiece picking and placement at different positions and orientations.

The fourth axis provides end-effector rotation, allowing the tool and workpiece orientation to be adjusted according to process requirements. This makes the robot suitable for loading and unloading, labeling, positioning and material handling tasks that require angular adjustment.


Servo Drive and Transmission System

ParameterSpecification
Drive TypeHigh-Precision Absolute Encoder Servo Motors
Base Motor750W × 1
Left and Right Arm Motors400W × 2
End-Effector Motor100W × 1
Total Number of Motors4
Total Motor Power Configuration750W + 400W × 2 + 100W
Reduction MechanismHigh-Precision Helical Gear Reducers × 4
Brake SystemThree-Axis Full Braking System
Position MemoryBuilt-In Position Memory Supported
Homing MethodAbsolute Encoder Servo; Supports Operation Without Returning to the Mechanical Home Position
Power-Off RecoverySupports Position Memory and Subsequent Operation After Power Recovery

The robot arm uses absolute encoder servo motors with built-in position memory. Under normal system configurations and recovery procedures, it does not need to search for the mechanical home position every time it starts up, helping reduce adjustment time after downtime.


Motion Control and Trajectory Functions

ParameterSpecification
Point-to-Point MotionSupported
Linear MotionSupported
Joint OffsetSupported
Linear OffsetSupported
Circular MotionSupported
Palletizing MotionSupported
World Coordinate SystemSupported
Joint Coordinate SystemSupported
Maximum TCP Point-to-Point Speed1600 mm/s
Maximum TCP Linear Speed1200 mm/s
Position TeachingSupported
Hand-Guided TeachingSupported
DI / DO ControlSupported
Manual Gripper ControlSupported through corresponding control commands
Air Pump On/Off ControlSupported through corresponding control commands
Independent Programs5
Maximum Points per Program200


Teach Pendant and Control System

ParameterSpecification
Teach Pendant TypeTouchscreen Teach Pendant
Screen Size7 inches
Control MethodTeach Pendant + Hand-Guided Teaching
User InterfaceGraphical User Interface
Program ManagementSupports Creation, Editing and Execution of Independent Programs
Program Quantity5 Independent Programs
Points per ProgramUp to 200
Coordinate DisplayReal-Time Coordinate Display
Motion ControlPoint-to-Point, Linear, Circular, Offset and Palletizing
Joint ControlSupports Base, Upper Arm, Forearm and End-Effector Axis Control
Parameter SettingsSupports Speed and Motion Parameter Adjustment
External SignalsSupports DI / DO Control

The touchscreen graphical interface allows operators to select motion types, set target coordinates, adjust movement speeds and record teaching points.

Users can establish independent programs according to actual process requirements, making it possible to edit and deploy basic automated operating sequences.


External Communication and I/O

ParameterSpecification
Communication MethodSerial Communication
USB CommunicationUSB Serial Communication Supported
Digital Inputs (DI)10 Channels
Digital Outputs (DO)10 Channels
DI / DO Signal Type24V / 0V Digital Signals
External ControlSupported
Vision System IntegrationSupports Expansion Through an Open Communication Protocol
External Device ConnectivitySupported
Secondary DevelopmentSupports Development Through Serial Communication Protocol

The open serial communication protocol supports external device connectivity and secondary development. It also enables integration with vision application solutions such as Hikvision vision systems and OpenCV camera development.

When combined with a vision system, the robot can be used in applications involving object recognition, position acquisition and vision-guided material handling.


Electrical and Operating Environment

ParameterSpecification
Operating VoltageAC 220V / 110V
Control Power SupplyDC 24V
Maximum Power Consumption1000W
Operating Temperature-10°C to 50°C
Applicable EnvironmentIndustrial Applications
Main Body MaterialAluminum Alloy
Mounting OptionsDesktop Mounting / Floor Mounting
Environmental RequirementsAvoid flammable or explosive environments and contact with corrosive gases or liquids
Electromagnetic EnvironmentKeep away from plasma equipment and other sources of electronic noise


Standard Configuration and Components

ComponentQuantity / Specification
ZKG4V90L3 4-Axis 90H Servo Robot Arm1 unit
Control Cabinet1 unit
7-Inch Touchscreen Teach Pendant1 unit
Dedicated Robot Connection Cables1 set
Teach Pendant Connection Cable1 cable
Robot Control SystemIntegrated into the matching control system
End EffectorConfigured according to actual application requirements


Dimensions

Product Dimensions and Working Range

Robot Arm Working Range

  • Maximum working radius: 717 mm

  • Rated payload: 3 kg

  • Repeatability: ±0.05 mm

  • Maximum TCP point-to-point speed: 1600 mm/s

  • Maximum TCP linear speed: 1200 mm/s


Working envelope references:

  • Side-view working height: approximately 790 mm

  • Maximum extension dimension shown in the diagram: approximately 641 mm

  • Top-view motion envelope: approximately Ø1282 mm


Control Cabinet and Operating Components

  • Reference control cabinet dimensions: 519 × 310 × 305 mm

  • Teach pendant screen size: 7 inches

  • Mounting options: Desktop Mounting / Floor Mounting


Installation and Deployment

The equipment supports both desktop and floor mounting. The installation method can be selected according to production-line layout, workbench height, workpiece position and the configuration of surrounding equipment.

The robot arm features an integrated aluminum alloy body and a compact control system, making it suitable for integration into compact industrial automation workstations and production equipment.


Industries

Applicable Industries and Application Fields

1. Metal Stamping and Automated Loading and Unloading

Suitable for automatic picking, machine loading and unloading, and workpiece transfer in metal stamping and component machining processes.

With four-axis servo motion control, the robot can be configured with picking and placement positions and motion trajectories according to the layout of stamping equipment, enabling automated coordination with peripheral devices.


2. Injection Molding and Plastic Product Handling

Suitable for downstream part picking, workpiece handling and product arrangement after injection molding.

Combined with an appropriate end effector and vision positioning solution, the robot can perform part picking, transfer, placement and handover to subsequent production processes.


3. 3C Electronics and Precision Components

Suitable for picking and positioning electronic structural components, connectors, plastic parts and other small components.

With ±0.05 mm repeatability and end-effector rotation, the robot can perform workpiece orientation adjustment, fixed-position placement and related automated assembly tasks.


4. Automated Palletizing and Material Handling

Suitable for picking, handling, array arrangement and automatic palletizing of lightweight products.

The built-in palletizing motion function can be configured according to workpiece dimensions, tray structure and arrangement requirements to perform repetitive placement at multiple positions.


5. Automated Labeling and Positioning

Suitable for fixed-position labeling, angle adjustment and workstation transfer of packaged products, regularly shaped workpieces and other items.

The end-effector rotation axis and position teaching function allow the operating orientation to be adjusted according to different workpiece directions, making the robot suitable for automated processes that require angular control.


6. Vision-Guided Picking and Intelligent Sorting

The robot supports integration with Hikvision vision systems, OpenCV camera development solutions and other vision systems through its open serial communication protocol.

Based on vision recognition results, the system can obtain object position, dimensions and orientation information and transmit target coordinates to the robot. This supports vision-guided picking, sorting, material handling and placement at designated positions.


7. Compact Industrial Automation Lines

Suitable for automated workstations with limited space and workpiece payloads within 3 kg.

Through connectivity with PLCs, sensors, vision systems and peripheral actuators, the robot can be integrated into compact industrial automation units for picking, inspection, handling and placement.


Applications

Typical Applications and Operating Workflows

1. Basic Motion Control of a Four-Axis Servo Robot Arm

Use the teach pendant to adjust the positions and speeds of the four joints and understand the motion relationships between the base, upper arm, forearm and end-effector rotation axis.

Combine the joint and world coordinate systems to perform basic robot motion control and position configuration.


2. End-Effector Rotation and Workpiece Orientation Adjustment

Use the fourth-axis end-effector rotation function to adjust the angle of the gripper and workpiece.

Configure the end-effector orientation according to product placement direction and processing requirements to perform workpiece picking, rotation and fixed-position placement.


3. Point-to-Point Picking and Placement

Set the robot's starting position, target picking position and placement position, then record the motion points through teaching.

Use point-to-point motion to complete workpiece picking, movement and placement, establishing a basic automated operating sequence.


4. Linear and Circular Trajectory Control

Use linear and circular motion functions to configure the end-effector's movement path.

Compare different trajectories and learn how robot motion control can be applied to handling, positioning and more complex path operations.


5. Joint Offset and Linear Offset Experiments

Adjust joint positions and linear motion offsets to change target positions and movement paths.

This is suitable for adapting actions to different workstations and optimizing picking positions.


6. Automatic Palletizing and Array Placement

Configure the palletizing starting point, arrangement direction, number of rows and columns, and placement spacing through the teach pendant.

Use the palletizing trajectory function to perform continuous picking and array placement of multiple workpieces. This is suitable for organized stacking of small products.


7. Vision-Guided Positioning and Picking

Connect an industrial camera or vision system to the robot control system to obtain visual recognition information about target workpieces.

Convert the vision positioning results into robot coordinates to perform target recognition, spatial position calculation and vision-guided picking.


8. DI / DO External Device Connectivity and Control

Use the 10 digital input channels and 10 digital output channels to read signals from peripheral sensors and control external actuators.

Integrate conveyor systems, pneumatic grippers and other automation equipment to coordinate robot operations with production workstations.


9. Gripper and Air Pump Control

Use the corresponding control protocol to operate the gripper and switch the air pump on or off.

Depending on the type of end effector, the robot can perform gripping, suction and release operations.


10. Power-Off Recovery and Position Memory Applications

Use the position memory function of the absolute encoder servo motors to understand robot position management before and after power interruption.

Through normal equipment shutdown and recovery procedures, operators can learn how absolute position memory helps reduce repeated homing and improves the convenience of resuming operation.


11. Vision Integration and Open Secondary Development

Connect vision recognition programs and external automation equipment through the open serial communication protocol.

By reading target information, transmitting coordinates and controlling robot motion, users can build coordinated workflows that combine vision recognition with robot execution.


12. Integrated Compact Industrial Automation Workstation

Combine the four-axis robot arm, teach pendant control, motion trajectories, external I/O and vision systems to build a complete automation task.

Depending on production requirements, integrated applications can include metal stamping machine loading and unloading, workpiece handling, palletizing, labeling and vision-guided picking.


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