OTC DAIHEN 1PC Series 1-Axis Servo Welding Positioner System
The OTC DAIHEN 1PC Series (1PC501, 1PC1001) provides robust, high-precision single-axis rotational positioning for robotic welding cells. Engineered as a headstock rotary table (with optional tailstock support for long assemblies), this positioner integrates an OTC AC servo motor and high-rigidity reduction gearing. Controlled as an external axis by the robot cabinet, it rotates tubular assemblies, axle shafts, and heavy flanges at an absolutely uniform angular velocity. This synchronized rotation allows continuous, multi-pass circumferential welding without stopping the arc, dramatically improving weld joint integrity and X-ray qualification pass rates.
⚙️ Core Technical Specifications & Performance Matrix
| Specification Parameter | Unit | 1PC501 (500 kg Class) | 1PC1001 (1000 kg Class) |
|---|---|---|---|
| Max. Payload Capacity | kg | 500 | 1000 |
| Max. Rotation Speed | rad/s [°/s] | 2.1 [120] | 1.3 [72] |
| Max. Allowable Spindle Torque | N·m | 490 | 1078 |
| Repeatability (at R=300 mm) | mm | ±0.1 | |
| Servo Rotation Stop Positions | – | 0~360° Continuous / Programmable Stop at Any Position | |
| Net Weight | kg | 110 | 193 |
🔧 Engineering & Operational Guide
- Tailstock Alignment: When pairing the 1PC headstock positioner with a passive support tailstock for long tubular assemblies, utilize laser alignment tools to ensure the rotational axis centerline is perfectly parallel to the base frame to prevent binding.
- Rotary Grounding Brush: Inspect the spring-loaded copper-graphite grounding brushes on the rotating spindle every 500 operating hours. Replace brushes immediately if worn to prevent electrical arcing across the spindle bearings.
- Inertia Compensation: For large-diameter flanges or eccentric workpieces, adjust the acceleration and deceleration ramps in the robot controller parameters to prevent mechanical jerking or gear backlash during rapid positioning stops.
📞 Contact for Global B2B Pricing & Technical Support
Anhui Oujie Automation Technology Co., Ltd. is your authorized supplier for genuine OTC DAIHEN industrial welding positioners, plasma cutting machines, and automated welding cells. We guarantee 100% authentic equipment for your production lines.
⚡ Fast global shipping. Genuine guarantee. Professional automation support included.







