20Ton Self-Aligning Welding Rotator Heavy Load PU Roller VFD Turning Rolls for Tank Vessel Welding
Product Overview
The HGZ-20 self-aligning welding rotator is specifically designed for 20-ton heavy cylindrical workpieces, ideal for circumferential seam welding of large storage tanks, pressure vessels, boiler barrels, and chemical pipelines.
The gravity linkage structure enables automatic roller spacing adjustment, eliminating manual adjustments when changing workpiece diameters. Variable frequency stepless speed control ensures stable rotation, improves circular weld formation, and reduces welding deformation.
Technical Specifications
| Item |
Parameter |
| Model |
HGZ-20 |
| Rated Load |
20 Ton |
| Applicable Workpiece Diameter |
300mm-3000mm |
| Roller Material |
Polyurethane |
| Rotation Linear Speed |
6-65m/h stepless adjustment |
| Driving Motor |
2×1.1kW |
| Centering Type |
Gravity self-aligning |
| Control Mode |
Control Cabinet + Handheld Remote |
| Input Voltage |
380V 50Hz, customizable |
| Certification |
CE |
| Warranty |
12 Months |
Key Features & Advantages
- Automatic Gravity Centering: Rollers automatically adapt to workpiece diameter, reducing downtime for frequent product switching.
- VFD Synchronous Drive System: Dual motor synchronous drive ensures steady rotating speed suitable for automatic submerged arc welding.
- Wear-resistant Polyurethane Rollers: Soft contact roller surface effectively protects stainless steel and anti-corrosion tank outer walls.
- Reinforced Integral Base: Stress-relief thick steel frame provides anti-shock and anti-deformation performance under 20-ton full load.
- Dual Operation Control: Fixed cabinet control matched with handheld remote enables safe operation away from welding high temperature zones.
- Comprehensive Safety Protection: Emergency stop button and overload protection circuit prevent equipment damage from improper operation.
Application Fields
- Large stainless steel and thermal insulation storage tank manufacturing
- Pressure vessel, boiler cylinder and heat exchanger welding processing
- Petrochemical pipeline, large elbow and pipe fitting rotary welding
- Chemical anti-corrosion tank and heavy cylindrical equipment overhaul welding
Comparison: Self-Adjusting vs Bolt Adjustable Roller Frame
| Item |
Bolt Adjustable Welding Rotator |
Our 20T Self-Aligning Welding Rotator |
| Adjust Method |
Manual bolt disassembly adjustment |
Automatic centering by gravity |
| Production Type |
Fixed size mass production |
Multi-spec flexible small batch production |
| Operation Cost |
Low equipment cost, time-consuming adjustment |
Higher comprehensive efficiency |
| Maintenance |
Simple structure, few vulnerable parts |
Regular lubrication for linkage parts |
| Applicable Load |
5-200Ton |
0.5-20Ton |
Packaging & Logistics
Main machine wrapped with waterproof plastic film and steel belt reinforcement; control cabinet packed with export fumigated plywood case.
Trade terms: EXW, FOB Shanghai, FOB Ningbo
Production cycle: 15-18 working days after deposit
Frequently Asked Questions
Q1: Is manual adjustment required when switching workpieces of different diameters?
No, the gravity linkage structure realizes automatic centering to match workpiece outer diameter directly.
Q2: Is the unit applicable for stainless steel tank welding?
Equipped with PU rollers, no scratch on workpiece surface, perfectly fit stainless steel tank production.
Q3: Is the rotation speed infinitely adjustable?
Built-in frequency converter supports 6-65m/h stepless speed regulation to match different welding techniques.
Q4: Can you provide CE certification documents for customs clearance?
Full CE certification files, test reports and nameplates are available for European customs clearance.
Q5: Does this set include a handheld remote controller?
Standard configuration contains handheld remote control together with fixed cabinet operation for flexible use.
