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Swivel[explain in detail]

Design Features:
Swivel has two categories, common swivel and double duty swivel. Double duty swivel is common swivel combined with spinner.The company's swivel matches the API SPEC 8C PSL1 products standards. It received the API certification issued by the American petroleum Institute and allow to use API monogram.
Washpipe packing set assembly adopts cassette structure .It can be exchanged quickly without disassemble rotary hose and gooseneck.
May matching 3LP and 4LP internal or external thread hose connection thread.
The factory can also manufacture low temperature resistant swivel according to customer’s requirement.
Common swivel consists of swivel bail , shell ,support, gooseneck ,central pipe ,master bearing ,joint other parts. The lower end connected with kelly stem by REG thread .The swivel bail is hang on the hook. Gooseneck and rotary hose can connected by REG thread connection or union connection (Under normal circumstances, the CH125 swivel not welded thread joint, other types of swivel welded 4LP external thread).  
Basic Technical Parameters of Normal swivels
Type SL90 SL110 CH125 SL135 SL160 SL170 SL225 SL315 SL450
Max.Dead Load 900 1100 1250 1350 1600 1700 2250 3150 4500
Max.Revolution 300
Max.Working Pressure 21 21 21 35
Angle between the gooseneck central line and vertical line 15°
Lower thread 4 1/2 REG-LH 4 1/2 REG-LH 6 5/8REG-LH
Bore Size of Central Pipe φ60 φ63.5 φ68 φ60 mm φ70 φ75
冲管通径mm φ60 φ63.5 φ70 φ57.15 φ70 φ75
Fractured surface at bail bend R50 116×90
R67.5 115×95
Bail bend radius R105 R115 R120
overall dimension 1830×540×420 1870×650×400 2100×660×620 2290×650×640 2470×790×680 2725×840×785 2970×990×980 3010×1040×980 3040×1110×1095
weight 410 900 625 777 1000 1250 2500 2700 2900

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