Products

Rotary Joint

In various fields of industry,"pearl"(SGK's brand name) rotary joints have been successfully used under variety of service conditions covering a wide range of materials,pressures,temperatures and rotation speeds.
Pearl Rotary Joints are used for supplying/discharging compressed or decompressed (below atmospheric pressure) fluid/gas from a fixed piping to the rotary section of various machines with no leak. For example, they can be used when a heat transfer medium such as <steam>, <hot water>, or <heated oil>, or a coolant such as <water>, <brine>, <ammonia>, or <Freon> for cooling is supplied to rotating [roll], [drum], or [cylinder], and when <compressed air> or <operating oil> is supplied to rotary machines such as [clutch] and [chuck] that are operated by fluid/gas. These rotary joints have been developed based on the most recent and advanced mechanical seal theory, and are extremely effective and economical. They are manufactured under strict quality control, and are compatible to one another with no deviation in the product. Furthermore, with rich line-up of models, they can satisfy various purposes.

Rotary Joint

AC Series

Can be alternated between heating and cooling
Capable of high temperature and pressure under high rotation speed
Long life due to low seal-face friction and wear

※We have the specification of 180 degrees C (356 degrees F) or more.

Fluid	Steam.Therm Oil.Water.Air
Max. Temperature	180 degrees C (356 degrees F)
Max. Pressure	1.47MPa (213 psi)
Max. Rotation Speed	15A to 40A 300min-1 50A to 80A 150min-1

NC Series

Need no lubrication,low maintenance
Capable of high temperature and pressure
Long life due to low friction and less wear
Simple design,easy maintenance

※ONC type for the hot oil of 300 degrees C (572 degrees F) or more, is also available upon request.

Fluid	Steam.Therm Oil
Max. Temperature	180 degrees C (356 degrees F)
Max. Pressure	1.47MPa (213 psi)
Max. Rotation Speed	15A to 40A 300min-1 50A to 80A 100min-1

RX Series

RX series joints offer long trouble-free and leakproof operation with ease of maintenance due to employing ceramic seal and brass casing.
To secure the reliable sealing,the carbon and ceramic seal faces are lapped to an optical flatness.
4 vented holes in casing enable to detect leakage before fluid corrodes the ball bearings.

※RXE SUS series
In addition to the rotor, the casing and spring catch are also made of SUS.

※We also have a wide variety of RXS series, some of which apply to printing machines.

●RXE type

Fluid	Water.Oil.Air.Gas
Max. Temperature	100 degrees C (212 degrees F)
Max. Pressure	[Vacuum:Up to 1.3kPa abs for each size] 10A to 25A 2.25MPa (326 psi) 32A to 40A 1.67MPa (242 psi) 50A to 80A 1.18MPa (171 psi) Air or gas:for each size Max. 0.98MPa (142 psi)
Max. Rotation Speed	10A to 25A 3500min-1 32A to 40A 2000min-1 50A to 80A 750min-1

●RXK type

Fluid	Water.Oil.Air.Gas
Max. Temperature	100 degrees C (212 degrees F)
Max. Pressure	90A , 100A 500min-1
Max. Rotation Speed	90A , 100A 0.98MPa (142 psi)

●RXH type

Fluid	Water. Hot Water.Therm Oil
Max. Temperature	150 degrees C (302 degrees F)
Max. Pressure	[Vacuum:Up to 1.3kPa abs for each size] 10A to 25A 2.25MPa (326 psi) 32A to 40A 1.67MPa (242 psi) 50A to 80A 1.18MPa (171 psi)
Max. Rotation Speed	10A to 25A 3500min-1 32A to 40A 2000min-1 50A to 80A 750min-1

KC Series

Light in weight due to aluminum casing
Compact design and simple construction
Lubrication-free due to sealed ball bearing
Capable of high rotation speed

※The straight flow-path type is also available upon request.

Fluid	Air.Gas.Water.Oil
Max. Temperature	100 degrees C (212 degrees F)
Max. Pressure	0.98MPa (142 psi)
Max. Rotation Speed	6A to 25A 1500min-1 32A to 65A 1000min-1

SXO Series

This joint is mainly served for drilling and boring operations of various machine tools.
Under high pressure or high rotation speed,SXO operates efficiently due to its accurate machined rotor and advanced seal technology.
In addition to standard "Carbon Graphite to Hardened Tool Steel"seal,SXO offers "Tungsten Carbide to Ceramic"(TCC)seal for longer service life.

●STRAIGHT THRU TYPE /RIGHT ANGLE TYPE

Fluid	Machining Oil.Water.Oil
Max. Temperature	120 degrees C (248 degrees F)
Max. Pressure	6.9MPa (1001 psi)
Max. Rotation Speed	10000min-1

●COMPACT TYPE

Fluid	Machining Oil.Water.Oil
Max. Temperature	120 degrees C (248 degrees F)
Max. Pressure	10.3MPa (1494 psi)
Max. Rotation Speed	15000min-1

ACCESSORIES

SIPHON ELBOW
SIPHON PIPE
FLEXIBLE TUBE

If there is anything we can help you with, please do not hesitate to contact us.