Welding Columns & Booms, Welding Accessories, Welding Automation, Welding Equipments, Welding Rectifiers, Welding Rotators, Welding Manipulators, Head Stock Positioners, Tail Stock Positioners, Self Aligning Rotators, Self Centering Rotators, Tank Rotators, Conventional Rotators, Welding Fixtures, Submerged Arc Welding, Plate Welding Machines, Heavy Fabrication, Customised Special Purpose Machines, Conventional Casing with Chimney, Oil Furnaces, Juicer for Sugar Industries, Material Handling Systems, Heavy Duty Fabrication, Industrial Fabrication
Welding Column And Booms, Welding Rotators, Welding Positioners, Welding Accessories, Seam Trackers, Seam Tracking Systems, Flux Recovery Systems, Special Purpose Machines, SPM, Turn Over Fixtures, Pipe Id Clading Station, Hydraulic Fit Up Rotator, Welding Trolleys, Generator Rotating Equipments, Motorized Material Transfer Wagon, Motorized Material Transfer Trolleys, Engineering Fabrication, Manufacturer, Supplier, Exporter, Pune, Maharashtra, India
 
 
 
   
 

Welding Rotators

 
We manufacture high quality rotators which are being used with various processes such as SAW/ TIG/ MIG/ ARC/ etc., capacities upto 2000 Tons. Steel rollers or polyurathene lined rollers are provided as per application. For higher capacity rotators forged rollers are provided.

• Our Standard Rotators consists of drive and idler unit. The frame and roller brackets are fabricated with
   heavy  sections, relieved and precision machined.
• Overload disc to protect polyurethane roller.
• Steplessely variable surface speed from 75 to 1500 mm/min.or higher and controlled through AC Variable    frequency drives. For precision movement encoder feedbacks are provided on case basis.
• Forward/ reserve rotation and emergency stop facility on panel.
• Operator pendant with forward/ reverse inch or run speed variation and stop functions.

Application
Welding of Pipes, API pipes, Boilers, Heat Exchangers, Pressure Vessels, Mounted Vessels, LPG ullets, Barrels, Tanks etc.
 
Advantages
• An indispensable tool for shell fabrication shops.
• Attains exceptional quality circumferential joints on shells.
• Increased production with reduced labour skill.
• Leads to minimum Shell/ Job handling.
• lesser usage of crane reduces idle time.
• Improves plant efficiency.
• Welding automation.
 
SPECIFICATIONS FOR SELF CENTERING ROTATOR
MODEL
SCR
5
SCR 10
SCR 20
SCR 30
SCR 40
SCR 50
SCR
80
SCR 100 SCR 120 SCR 150 SCR 200 SCR
300
SCR
500
CAPACITY- DRIVE & IDLER(TONS)
5 TONS
10 TONS
20 TONS
30 TONS
40 TONS
50 TONS
80 TONS
100 TONS
125 TONS
150 TONS
200 TONS
300 TONS
500 TONS
SPEED RANGE
(mm/min)
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
VESSEL(min-max) (mm)
400-4000
400-4000
400-4500
500-5000
500-5000
500-5000
600-6000
600-6500
800-6500
900-7000
900-7000
1000-7500
1200-8500
ROLLER DIAMETER
(mm)
250
250
300
400
400
400
500
500
500
600
(Forged)
600
(Forged)
600
(Forged)
700
(Forged)
ROLLER WIDTH (mm)
75
100
125
150
150
200
200
200
200
250
250
300
300
 
There Are Two Main Categorizes Of Rotators :
 
 
The Self Centering Types :- Model 'SCR'- SERIES
 
Construction of machine is similar to that of conventional type Rotators. However, Housing Brackets are supported directly on the machine bed and are attached to the bed only with an L.H./ R.H. lead Screw andnuts. When the leadScrew is rotated with the ratchet handle, the Roller Brackets move simultaneously towards each other or away from each other.
Welding Rotators
In this series there will be twin drive arrangement. This type of design provides simultaneous and step less adjustment of the Roller housings, and keep the job axis atways at the same position irrespective of diameter setting.
   
The Self Aligning Types :- Model 'SAR' - SERIES
 
Self Aligning Rotators automatically adjust the Roller Housings to accept any job diameters within specified diameter range. This type of machines are generally used to cope with the change in shell diameter, job to job. The roller housings of this type of machine are hinged to the beds and open automatically when larger diameter job is introduced. In this type of rotator. each roller bracket assembly has two separate roller assemblies,and thus supports the job on wider area.The final drive is given to both the 2-sets of rollers of the Drive Unit, provide better traction to the job. However,in this case a declutching arrangement is provided to the top rollers,in order to protect the gear boxes, as when the job hits the top rollers first while loading, there is a tendency of rotating the top rollers where as it is locked by the gear boxes.
Welding Rotators
   
SPECIFICATIONS FOR SELF ALIGNING ROTATOR
MODEL
SAR
5
SAR 10
SAR 20
SAR 30
SAR 40
SAR 50
SAR
80
SAR 100 SAR 120 SAR 150 SAR 200 SAR
300
SAR
500
CAPACITY- DRIVE & IDLER(TONS)
5 TONS
10 TONS
20 TONS
30 TONS
40 TONS
50 TONS
80 TONS
100 TONS
125 TONS
150 TONS
200 TONS
300 TONS
500 TONS
SPEED RANGE
(mm/min)
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
150-1250
VESSEL(min-max) (mm)
300 -2500
400-3000
500-4000
500-5000
600-5000
600-5000
900-6000
900-6000
1000-6500
1000-7000
1200-7500
1400-7500
1600-8000
ROLLER DIAMETER
(mm)
250
250
300
400
400
400
500
500
500
500
500
(Forged)
600
(Forged)
600
(Forged)
ROLLER WIDTH (mm)
50
100
150
150
150
150
150
175
175
200
250
300
300
   
Anti Drift System
 
During C-seam welding of shell sections on rotators,axial movement of shell or shell drifting invariably takes place.This drifting cannot be avoided. Reasons for this drifting could be geometrical inaccuracies of individual shells.inaccuracies of drive unit and idler unit alignment,etc. Even if the drive unit and idler units are aligned witheach otherinitially, duringshell loading,the algnment tends to get disturbed. In lighter shells. this drifting can be stopped by positive stoppers. However in heavier shells. due to axial drifting,tremendous pressure will get generated and this pressure will come on the positive stopper, if provided, and will break it. Ideal solution is to prevent this happening, to avoid creating such situation. This is achieved through anti-drifting arrangement.
Anti Drift System
In this case also, drifting will take place which cannot be avoided. But the movement will be restricted within a band of "+ 1- 5 mm". Seam will keep floating forward and backward within this range.
 
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About Us
The World is talking about superior volume, advanced quality products aimed to be produced at minimal manufacturing and Competitive cost. A strong determination to do just that. Anvin Engineers Pvt. Ltd.(AEPL) launched this firm, about 25 years ago, making a huge investment in the fabrication industry & process knowledge.

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