Anvin Engineers Pvt. Ltd.
Welding Positioners
 

Self Aligning Rotators, Welding Rotators, Tank Rotators, Sar Lifting Rotators, Self Aligning Rotators, Conventional Rotators, Manufacturer, Exporter, Supplier, Pune, Maharashtra, India

 
Welding Rotators  
   

Self Aligning Rotators

 
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Self Aligning Rotators automatically adjust the roller Housings to accept any job diameters with in the 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 ot the beds and to cope with the change in shell diameter job is introduced. In this type of rotator. each roller brackets assembly have two separater roller assemblies, and thus supports the job on a wider area. The final drives is given to both the 2-sets of rollers of the Drive Unit, provide better traction ot 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 locked by the gear boxes.
     
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 with each other initially, during shell loading, the argnment 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. In this case also, drifting will take place which cannot be avoided. But the movement will be restricted within a band of "+ / - 5 mm". Seam will keep floating forward and backward within this range.
Catalogue Download
   
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
5
10
20
30
40
50
80
100
125
150
200
300
500
& IDLERITONS)
TONS
TONS
TONS
TONS
TONS
TONS
TONS
TONS
TONS
TONS
TONS
TONS
TONS
SPEED RANGE
150-
150-
150-
150-
150-
150-
150-
150-
150-
150-
150-
150-
150-
(mm/min)
1250
1250
1250
1250
1250
1250
1250
1250
1250
1250
1250
1250
1250
VESSEL (min-max)
300-
400-
500-
500-
600-
600-
900-
900-
1000-
1000-
1200-
1400-
1600-
(mm)
2500
3000
4000
4000
5000
5000
6000
6000
6500
7000
7500
7500
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
   
 
 
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