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Products

Rotary Joint

In various fields of industry, Pearl 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 <hydraulic 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

RX Series

RX Series

  • A floating seal ring provides good follow-up capability to the rotor seal face, resulting in stable seal performance.
  • Due to low torque, a measure for preventing casing rotation is not required in many cases. (except for RXK)

Products with stainless steel specifications are available for RXE and RXH. Metal parts of products with stainless steel specifications are all made from stainless steel. Recommended Product

We are also able to produce products available for dry air.

RXE Line

Fluid Water / Oil
Max. Pressure 8A to 25A 2.25MPa (326 psi)
32A to 40A 1.67MPa (242 psi)
50A to 80A 1.18MPa (171 psi)
Max. Temperature 100 degrees C
(212 degrees F)
Max. Rotation Speed 8A to 25A 3500min-1
32A to 40A 2000min-1
50A to 80A 750min-1

RXH Line

Fluid Water / Thermal Oil
Max. Pressure 10A to 25A 2.25MPa (326 psi)
32A to 40A 1.67MPa (242 psi)
50A to 80A 1.18MPa (171 psi)
Max. Temperature 150 degrees C
(302 degrees F)
Max. Rotation Speed 10A to 25A 3500min-1
32A to 40A 2000min-1
50A to 80A 750min-1

RXK Line

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

KC SeriesRecommended Product

KC Series

  • Aluminum alloy is used for a casing. Installation to a roll is easy as this product is small and lightweight.
  • As a grease-sealed ball bearings are used, greasing is not required.
  • Due to low torque, a measure for preventing casing rotation is not required.

We are also able to produce products with linear flow passages.

We are also able to produce products available for dry air.

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

The lowest pressure when used under a pressure lower than atmospheric pressure is 1.3 kPa abs (10 Torr).

AC Series

AC Series

  • Can be used in a high-temperature range (max. 180℃).
    (Quasi-standard products that can be used at 180℃ or higher are available.)
  • Can be used for alternate heating and cooling.
  • High performance is maintained for a long time due to reduced seal wear.
Fluid Saturated Steam / Thermal Oil / Water / Air
Max. Pressure 1.47MPa (213 psi)
Max. Temperature 180 degrees C
(356 degrees F)
Max. Rotation Speed 10A to 40A 300min-1
50A to 80A 150min-1

NC Series

NC Series

  • Can be used in a high-temperature range (max. 180℃).
  • As a carbon bearing is used, greasing is not required.
  • Low mechanical seal wear allows stable operation for a long time.
Fluid Saturated Steam / Thermal Oil
Max. Pressure 1.47MPa (213 psi)
Max. Temperature 180 degrees C
(356 degrees F)
Max. Rotation Speed 15A to 40A 300min-1
50A to 80A 100min-1

NX SeriesRecommended Product

NX Series

  • NXE : Specialized product for steam applications
  • NXH : Specialized product for thermal oil applications
  • As carbon bearings are used, greasing is not required.

We also produce products that can be used for thermal oil at 280℃ or more.

Fluid NXE Saturated Steam
NXH Thermal Oil
Max. Pressure NXE 1.5MPa (218 psi)
NXH 1.0MPa (145 psi)
Max. Temperature
NXE
200 degrees C
(392 degrees F)
NXH
280 degrees C
(536 degrees F)
Max. Rotation Speed 150 min-1

SXO Series

SXO Series

  • Lightweight, compact, and easy to handle.
  • Can be used in a high-pressure and high-rotation speed range.
  • Depending on the application, you can select standard seal or high-grade seal. High-grade seal can be used under a high-load condition.

We are also able to produce products available for dry air.

Straight Style / 90°Style

Fluid Cutting Oil / Water / Oil
Max. Pressure 6.9MPa (1001 psi)
Max. Temperature 100 degrees C
(212 degrees F)
Max. Rotation Speed 10000min-1

Compact Style

Fluid Cutting Oil / Water / Oil
Max. Pressure 10.3MPa (1494 psi)
Max. Temperature 100 degrees C
(212 degrees F)
Max. Rotation Speed 15000min-1

Accessories

Accessories

  • SIPHON ELBOW
  • SIPHON PIPE
  • FLEXIBLE TUBE

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

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