ZEKEEP ZKG3V90L5 3-Axis Industrial Servo High-Speed Robot Arm

5 kg Rated Payload × 1600 mm/s High-Speed Motion × ±0.05 mm Repeatability — Designed for Industrial Picking and Material Handling.

The ZEKEEP ZKG3V90L5 is a 3-axis industrial servo high-speed robot arm designed for industrial material handling, machine loading and unloading, and palletizing applications. It features a three-joint structure consisting of a base, upper arm and forearm, combined with absolute encoder servo motors, high-precision reduction mechanisms and a three-axis full braking system. The robot arm is designed for industrial applications that require higher payload capacity and consistent repeatable positioning.

The robot arm has a rated payload of 5 kg, a maximum working radius of 625 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. Compared with the four-axis version, which adds an independent end-effector rotation axis, the ZKG3V90L5 focuses more on payload capacity and fundamental spatial positioning. It is suitable for operations centered on workpiece picking, material handling and fixed-position placement.

The drive system uses absolute encoder servo motors, with a 750W motor at the base and two 400W motors for the upper arm and forearm. Combined with three high-precision helical gear reduction mechanisms, this configuration provides power transmission and motion control for the three axes. Customized cross-roller bearings, reinforced mechanical joints and a belt-drive structure provide mechanical support for continuous operation and frequent repetitive tasks.

For motion control, the robot arm is equipped with a 7-inch touchscreen teach pendant. It supports world and joint coordinate systems, as well as point-to-point, linear, circular, offset and palletizing motion functions. The system supports five independent programs, with up to 200 points per program, making it convenient to manage separate motion sequences for different workpieces and production tasks.

For automation integration, the ZKG3V90L5 is equipped with 10 digital inputs (DI) and 10 digital outputs (DO), together with USB serial communication and an open robot control communication protocol. Depending on project requirements, it can connect to external PLCs, sensors, actuators and vision systems. Integration with Hikvision vision systems or OpenCV camera development solutions can support workpiece recognition, target positioning and vision-guided material handling.

In addition, the robot arm uses an aluminum alloy integrated die-cast structure, combined with absolute position memory and a three-axis full braking system. These features support practical deployment and operation, including position retention and braking protection functions.

For industrial processes that do not require an independent end-effector rotation axis but place greater emphasis on payload capacity and high-speed repetitive handling, the ZKG3V90L5 provides a 3-axis servo robot arm solution with a 5 kg rated payload. It is suitable for stamping machine loading and unloading, product handling, automatic palletizing and compact industrial automation workstations.

Key Features and Product Highlights

1. 5 kg Rated Payload for Medium-Payload Handling Tasks

Designed around payload capacity to accommodate a wider range of industrial workpiece handling requirements.

The ZKG3V90L5 has a rated payload of 5 kg and a maximum working radius of 625 mm. It can be used for picking, transferring and placing workpieces that meet the robot's payload and working envelope requirements.

Compared with the 3 kg four-axis version in the same product range, this model is more suitable for automation processes involving relatively heavier workpieces and repetitive material handling.

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

High-speed servo drive for repetitive production tasks.

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

Through coordinated movement of the base, upper arm and forearm, the robot can perform workpiece picking, position transfer and palletizing tasks. It is suitable for industrial workstations where operating efficiency is an important consideration.

3. ±0.05 mm Repeatability for Consistent Picking and Placement

High-precision positioning for repeatable industrial operations.

The robot arm has a repeatability of ±0.05 mm. Under appropriate workpiece, end-effector and operating conditions, it can be used for picking and placement tasks that require consistent repeated positioning.

Combined with servo drive control, precision reduction mechanisms and joint bearing structures, the design supports stable positioning during repeated operation.

4. Absolute Encoder Servo Motors with Position Memory

Supports operation without repeated homing, helping simplify position recovery procedures.

The robot arm uses high-precision absolute encoder servo motors with built-in position memory.

Under normal power-off and recovery procedures, the retained position information can reduce the need to repeatedly return to the mechanical home position, making it more convenient to resume equipment operation.

5. 750W + 400W Servo Configuration for Three-Axis Drive

Motor power is configured according to the drive requirements of each joint.

The base is driven by a 750W servo motor, while the upper arm and forearm each use a 400W servo motor.

Together with three high-precision helical gear reduction mechanisms, the system provides a complete three-axis power transmission configuration for picking and material handling tasks within the robot's rated payload and operating conditions.

6. Three-Axis Full Braking System for Power-Off Protection

All three motion joints are equipped with braking functions to help reduce the risk of unintended movement.

The robot arm 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. Precision Cross-Roller Bearings for Rigidity and Durability

Mechanical joint design supports structural load-bearing and operating stability.

The robot arm uses precision bearing structures, including customized cross-roller bearings, together with specified machining and material selection processes.

The mechanical support structure is designed to balance rigidity under higher payload conditions, motion stability and long-term operating performance.

8. Aluminum Alloy Integrated Die-Cast Body for Compact Installation

A compact structural design suited to industrial installation requirements.

The main body uses an aluminum alloy integrated die-cast structure, combining mechanical support with a compact overall design.

Together with customized belt transmission and joint structures, the design aims to reduce mechanical complexity and maintenance requirements during repetitive industrial operation.

9. Graphical Teach Pendant Interface for Easier Operation

A 7-inch touchscreen interface supports motion configuration and program management.

The robot arm comes with a 7-inch touchscreen teach pendant and supports point-to-point, linear, circular, offset and palletizing motion functions.

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

10. Open Communication Protocol for Vision and Peripheral Device Integration

Extends standalone robot control to connected industrial automation systems.

The robot arm is equipped with 10 digital inputs (DI) and 10 digital outputs (DO), and supports USB serial communication and an open robot communication protocol.

Depending on project requirements, it can connect to PLCs, sensors and other automation equipment. It also supports integration with Hikvision vision systems and OpenCV camera development solutions, providing an expansion path for workpiece recognition and vision-guided picking.

11. Three-Axis Spatial Motion for Picking, Handling and Palletizing

Designed around XYZ spatial positioning and fundamental industrial handling operations.

The robot arm uses a three-axis structure consisting of base rotation, upper-arm pitching and forearm pitching. It does not include an additional independent end-effector rotation joint.

It supports world and joint coordinate systems, together with point-to-point, linear, circular, offset and palletizing motion. It is suitable for repetitive material handling and pick-and-place tasks that do not require independent end-effector rotation.

Frequently Asked Questions (FAQ)

1. What type of robot arm is the ZKG3V90L5?

The ZKG3V90L5 is a 3-axis, 5 kg industrial servo high-speed robot arm from ZEKEEP. It uses absolute encoder servo motors and high-precision reduction mechanisms. Its main applications include industrial picking, material handling, machine loading and unloading, and palletizing.

2. What is the rated payload of the ZKG3V90L5?

The rated payload is 5 kg. It is suitable for workpiece picking and handling tasks that meet the robot's working range and actual operating requirements.

3. What is the working radius of the robot arm?

The product specification lists a maximum working radius of 625 mm. The positions the robot can reach in practice are also affected by the joint motion ranges and the actual installation orientation.

4. What is the repeatability of the robot arm?

The repeatability is ±0.05 mm. This makes the robot suitable for industrial picking, handling and placement tasks that require consistent repeated positioning.

5. What is the maximum operating speed of this robot arm?

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 the workpiece payload, trajectory distance and safety settings.

6. What drive system does the three-axis robot arm use?

It uses absolute encoder servo motors, with one 750W motor and two 400W motors. These work with three high-precision helical gear reduction mechanisms to control the three motion joints.

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

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

8. Does it support hand-guided teaching?

Yes. Operators can guide the robot arm to target positions and use the touchscreen teach pendant to record points and create operating programs.

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

The system supports five independent programs, with up to 200 points per program. This provides program management for a range of repetitive industrial operations.

10. Which motion types 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.

11. Can the robot arm be integrated with machine vision systems?

Yes. It supports an open serial communication protocol and can be integrated with Hikvision vision systems or OpenCV camera development solutions for product recognition, position acquisition and vision-guided material handling. The actual vision functions depend on the external camera, algorithms and system integration solution.

12. What are the differences between the 3-axis 5 kg and 4-axis 3 kg servo robot arms?

Both models belong to the ZEKEEP industrial servo high-speed robot arm range, but they differ in degrees of freedom, payload and working radius.

• ZKG3V90L5 (3-axis): 5 kg rated payload and 625 mm maximum working radius. It is primarily designed for workpiece picking, material handling, machine loading and unloading, and palletizing.

• ZKG4V90L3 (4-axis): 3 kg rated payload and 717 mm maximum working radius. It adds an independent end-effector rotation joint, making it suitable for applications that require workpiece angle adjustment and different end-effector orientations.

The 3-axis version is more suitable when payload capacity is a priority and independent end-effector rotation is not required. The 4-axis version is a better choice when end-effector rotation and multi-orientation picking are necessary.

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

It is suitable for metal stamping, material handling, automatic machine loading and unloading, product palletizing, fixed-position labeling and vision-guided picking.

Actual model selection should take into account workpiece weight, end-effector weight, working range and production cycle requirements.

Product Selection and Project Consultation

Before selecting the 3-axis 5 kg servo robot arm, it is recommended to clarify the production task and workpiece requirements.

• Workpiece specifications: Workpiece dimensions, weight, shape and surface characteristics.

• Payload requirements: Whether the combined weight of the workpiece and end effector is within the 5 kg rated payload.

• Operating range: Picking position, placement position, gripping height and required working radius.

• Operation type: Stamping machine loading and unloading, product handling, automatic palletizing or vision-guided picking.

• Speed requirements: Target cycle time, movement distance and continuous operating requirements.

• End-effector configuration: Whether a pneumatic gripper, vacuum suction cup or customized fixture is required.

• Control interfaces: Whether DI / DO, USB serial communication and external communication protocols are required.

• Vision requirements: Whether integration with Hikvision vision systems, OpenCV cameras or other recognition systems is needed.

• Installation conditions: Desktop or floor mounting, together with on-site safety protection requirements.

Based on the process requirements and site layout, the robot arm mounting method, end-effector structure, communication interfaces and supporting automation equipment can be further specified to form a complete industrial picking and material handling solution.