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High Rigidity Precision Hollow Rotary Table

Core Performance: Ultra-High Repeat Positioning Accuracy, Superior Rotary Accuracy, High Rigidity & Multi-Directional Load Capacity, Stable & Low-Noise Operation Core Advantages: Unique Hollow Through-Hole Structure for Easy Integration, Universal Motor Compatibility & Customization, High Cost-Performance & Low Maintenance, Compact Structure & Wide Adaptability

Application: Automated Production Line Transformation, Laser Processing Industry, Robotics & Intelligent Machinery, Other Industrial Fields

Categories: Hollow Rotary Table, Industrial Gear Reducer, Servo Gearboxes

Description
Technical Parameters

Hollow Rotary Table | High Precision Planetary Rotary Table for Industrial Automation

Hollow Rotary Table is a high-precision compact planetary rotary reducer designed to replace traditional DD motors and cam indexers in modern industrial automation. As a core precision rotary transmission device, it delivers ultra-accurate digital angle positioning, high rigidity load capacity, and versatile motor compatibility, solving the pain points of low precision, poor flexibility, and high cost of conventional rotary motion components.

Featuring a unique hollow shaft through-hole structure and integrated precision gear reduction system, this rotary platform supports multi-directional torque output and adaptive installation. It is widely recognized as an ideal upgrade solution for automated rotary workstations, laser processing equipment, robotic joints, and precision positioning machinery. Suitable for light to medium load high-precision rotation scenarios, it balances superior performance and cost-effectiveness for global industrial automation transformation.

Working Principle

The hollow rotary platform adopts a mature servo-driven gear transmission system. AC servo motors or stepping motors drive the input shaft, and the built-in single-stage helical gear or planetary reduction mechanism decelerates speed and amplifies output torque stably. Power is transmitted to the turntable supported by precision cross roller bearings, realizing high-stability, high-precision 360° digital rotary positioning. The optimized gear transmission structure ensures efficient power transmission, low energy loss, and smooth continuous rotary motion.

Core Performance

Ultra-High Repeat Positioning Accuracy: Adopts grade 5 high-precision helical gears and adjustable backlash mechanism. By fine-tuning the gear center distance to eliminate idle backlash, the repeat positioning accuracy is controlled within ±5 arcsec, meeting ultra-precision industrial positioning standards
Superior Rotary Accuracy: After assembly, the turntable undergoes secondary precision grinding (standard fine turning process) with the cross roller bearing as the rotation center, strictly guaranteeing turntable coaxiality and flatness, eliminating rotation deviation and jitter.
High Rigidity & Multi-Directional Load Capacity: Equipped with precision cross roller bearings with 90° staggered roller arrangement. Preload design is adopted between bearing inner ring, outer ring and rollers, enabling the platform to bear radial force, axial force and overturning torque simultaneously. Its overall rigidity is 10 times higher than traditional bearing structures.
Stable & Low-Noise Operation: Optimized gear meshing and integral rigid structure effectively reduce operation vibration and running noise, ensuring long-term stable continuous operation without precision attenuation

Core Advantages

3.1 Unique Hollow Through-Hole Structure for Easy Integration

The large-diameter hollow shaft design (maximum hollow diameter up to Φ250mm) allows cables, air pipes, water pipes and tool lines to pass through directly. It simplifies equipment wiring and piping layout, avoids pipeline winding during rotation, greatly optimizes the automation system structure, saves installation space, and improves equipment integration and aesthetics. Compared with solid shaft rotary devices, it is more suitable for complex automated production lines.

3.2 Universal Motor Compatibility & Customization

Custom flange interfaces and input shaft holes support all mainstream brands of servo motors and closed-loop/open-loop stepping motors. No special adapter parts are required, realizing plug-and-play installation. Multiple structural forms including coaxial, offset shaft, right-angle, extended closed-loop, open-loop and corner types are available to meet diverse angle output and torque demand scenarios.

3.3 High Cost-Performance & Low Maintenance

As an upgraded alternative to expensive DD motors and low-precision cam indexers, it achieves digital high-precision positioning at a lower equipment cost. The integrated compact structure reduces redundant mechanical parts, lowers later maintenance difficulty and cleaning costs, and features long service life and stable performance, effectively reducing enterprise production and operation costs.

3.4 Compact Structure & Wide Adaptability

Integrated planetary reduction and bearing support design realizes ultra-compact body size, occupying less installation space. The lightweight and high-rigidity structure adapts to various installation environments, covering light-load and medium-load precision rotation scenarios, with stronger scene adaptability than traditional rotary equipment.

Application

The high-precision hollow rotary platform is a universal core component for industrial precision rotary motion, widely applied in global automated manufacturing, precision processing and intelligent equipment industries:

Automated Production Line Transformation: Rotary worktables for assembly, sorting, testing and packaging production lines, realizing automatic cyclic positioning and rotation.
Laser Processing Industry: Rotary clamps for laser marking, laser engraving, laser cutting and laser welding equipment, ensuring high-precision rotary processing of workpieces.
Robotics & Intelligent Machinery: Light-duty robotic arm rotary joints, precision positioning rotating shafts, and multi-axis motion system auxiliary rotation modules.
High-End Precision Equipment: CNC auxiliary rotary tables, semiconductor processing equipment, medical pharmaceutical machinery, PCB and photovoltaic lithium battery production equipment.
Other Industrial Fields: Printing machinery, food packaging equipment, AGV intelligent logistics equipment, testing instruments, aerospace precision devices and experimental teaching equipment.

Technical Parameters

Repeat Positioning Accuracy	≤5 arcsec
Positioning Accuracy	≤1 arcmin
Transmission	Single-stage helical gear
Support Bearing	90° staggered preloaded crossed roller bearing
Max Hollow Bore	Φ250mm
Compatible Motors	All-brand servo motors, open/closed-loop stepper motors
Processing Craft	Secondary precision grinding after assembly
Optional Configurations	Coaxial, parallel shaft, right-angle, extended stepping types