In various fields of industry,"pearl"(SGK's brand name) swivel joints have been successfully used under variety of service conditions covering a wide range of materials,pressures,temperatures and speed

Pearl Swivel Joints are used when compressed or decompressed (below atmospheric pressure) fluid/gas is transported and the piping needs to be rotated or moved in optional direction of up/down, left/right, or forward/backward. Movable piping can be made easily, safely and at a low cost, and piping can be secured.These Swivel Joints can be rotated 360 degrees. They have large mechanical strength that endures large radial/thrust load and moment load due to double-row ball bearings and grease lubrication.Since a ring-type packing such as O-ring is used in the sealing section, the structure remains simple while providing stable sealing that does not leak any pressurized fluid contained.PK series, for high temperature application is incorporated with lubrication-free bearings section, and the sealing section adopts PTFE material and the mechanical seal to provide stable sealing.

STANDARD SWIVEL JOINTS * SJ Catalog PDF (2.44MB)

SERIES	FEATURES	SERVICE CONDITIONS etc.		CONSTRUCTION
1.A Series	1. These Swivel Joints can be rotated 360 degrees. 2. They have large mechanical strength. 3. The structure remains simple. Please consult us for use with a fluid at 100 degrees C (212 degrees F) or more or with a special fluid.	Max. Pressure	4.1MPa	ver.007 PDF 716KB
		Max. Temperature	100 degrees C (212 degrees F)
		Material	Ductile Cast Iron (Carbon steel in part)
		Seal	NBR O-ring
		Connection	Female Taper Thread (Rc)
2.AS Series	1. These Swivel Joints can be rotated 360 degrees. 2. They have large mechanical strength. 3. The structure remains simple. Please consult us for use with a fluid at 100 degrees C (212 degrees F) or more or with a special fluid.	Max. Pressure	10A to 50A 4.1MPa 65A to 80A 2.1MPa	ver.007 PDF 683KB
		Max. Temperature	100 degrees C (212 degrees F)
		Material	Stainless Steel
		Seal	NBR O-ring
		Connection	Female Taper Thread (Rc)
3.C Series	1. These Swivel Joints can be rotated 360 degrees. 2. They have large mechanical strength. 3. The structure remains simple. Please consult us for use with a fluid at 100 degrees C (212 degrees F) or more or with a special fluid.	Max. Pressure	2.1MPa	ver.007 PDF 780KB
		Max. Temperature	100 degrees C (212 degrees F)
		Material	Weld steel
		Seal	NBR O-ring
		Connection	Flange
4.CS Series	1. These Swivel Joints can be rotated 360 degrees. 2. They have large mechanical strength. 3. The structure remains simple. Please consult us for use with a fluid at 100 degrees C (212 degrees F) or more or with a special fluid.	Max. Pressure	2.1MPa	ver.007 PDF 673KB
		Max. Temperature	100 degrees C (212 degrees F)
		Material	Weld stainless steel
		Seal	NBR O-ring
		Connection	Flange
5.B Series	1. These Swivel Joints can be rotated 360 degrees. 2. They have large mechanical strength. 3. The structure remains simple.	Max. Pressure	13.7MPa	ver.007 PDF 976KB
		Max. Temperature	100 degrees C (212 degrees F)
		Material	Steel (Weld steel)
		Seal	NBR O-ring
		Buck-up Ring	PTFE
		Connection	Female Taper Thread (Rc)
6.SRK Series	1. With the excellent pressure balance design, thrust load generated from the internal pressurized fluid is balanced well so that excessive load is not added to the bearing.　They endure extreme pressures and provide stable operation with little rotary torque fluctuations due to pressure. 2. Large mechanical strength due to an <O-ring> with special backup ring used in the seal seciton and 2 <radial ball bearings> contained in the bearing section. 3. Maintenance is easy, with simple structure and <O-ring> and <backup ring> being the only consumables. Flange-type joints (SRK-2F and 3F) can also be manufactured upon request. Please inform the flange specifications. We have SSH series made of SUS.	Max. Pressure	10A to 40A 34.3MPa 50A to 80A 24.5MPa	ver.007 PDF 367KB
		Max. Temperature	100 degrees C (212 degrees F)
		Material	Steel (Weld Steel)
		Seal	NBR O-ring
		Connection	Female Taper Thread (Rc)
7.PK Series	1. Self alignment make piping easy. 2. Easy handling and piping due to small size and light weight 3. No need for lubrication, easy to maintain PK-*S series is also available. PK-*S series incorporates a spacer between the body and axis of rotation to reduce eccentricity of the axis of rotation. PKZ series for alternating heating and cooling operations is also available upon request.	Max. Pressure	2.3MPa	ver.007 PDF 713KB
		Max. Temperature	230 degrees C (446 degrees F)
		Material	Body:Ductile Cast Iron, Ball:Bronze
		Seal	PTFE
		Connection	Female Taper Thread (Rc)

CLASSIFICATION BY STYLE NUMBERS


APPLICATIONS
1. Style 2 (or Style 1)
As shown below, they are used for transporting fluid to a rotating body.
Example:
Hose reel,Rotary coil hooker,etc.


2. Style 2
As shown below, they are used when fluid is transported through rubber hose or flexible metal hose. Damage to the bending section generated by mechanical movement can be eliminated and the hose length reduced.
Example:
Construction machines,Machine tools,Hydraulic systems,Cargo-handling systems,etc.


3. Style 3-3-3 (or Style 2-3-2)
As shown below, dreg piping capable of planar movements can transport fluids from a fixed set of piping to a moving machine safely and with assurance.The use of six swivel joints allows the piping to be moved in all directions (in three dimensions).
Example:
Hot press,Tire press,Die-cast machine,Injection molding machine,etc.