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Applicable industry : Machine tools (for table cooling) Multi-port series

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Rotary Joint

Rotary joints for cooling in machine tool

What is the Rotary joint (multi-port series) for machine tool?

A multi-port rotary joint is used in machine tools to supply multiple fluids from the fixed piping to the rotating table.

In line with the increasing multifunctionality of machine tools, it can simultaneously supply multiple fluids such as oil for the workpiece chuck, air for mating detection, cooling oil, air blow, and coolant-through.

Features

1. Multifunctional capability

Compatible with various combinations such as workpiece chuck oil, mating detection air, cooling oil, air blow, and coolant-through.

2. Long service life & compact design

Optimized through a combination of contact and non-contact sealing structures.

3. High pressure & high-speed operation

Proven performance at 7 MPa and 3,000 min^-1.

4. Custom design available

Can be customized to meet specific customer requirements.

Product introduction video

Product lineup

*Please refer to the catalog for details.

EMS3P series (3 port type)

All ports adopt highly wear-resistant mechanical seals.

Capable of maintaining pressure.

Port No.	Fluid	Use	Pressure			Max. speed (min^-1/ rpm)
A	Hydraulic oil	Actuator	7.0 MPa	1,015 psi	70 bar	2,500
B	Dry air Oil air	Air blow Mating detection	0.5 MPa 0.2 MPa	72.5 psi 29 psi	5 bar 2 bar
C	Coolant	Coolant through	7.0 MPa	1,015 psi	70 bar
	Oil mist Dry air	Air blow Actuator Mating detection	1.0 MPa 1.0 MPa 0.2 MPa	145 psi 145 psi 29 psi	10 bar 10 bar 2 bar
	Hydraulic oil	Actuator	7.0 MPa	1,015 psi	70 bar

EMF-10890 (4 port type)

The hydraulic oil ports adopts a clearance seal.

This provides long service life, low torque, and reduced heat generation.

Port No.	Fluid	Use	Pressure			Max. speed (min^-1/ rpm)
A	Hydraulic oil	Actuator	7.0 MPa	1,015 psi	70 bar	3,000
B	Hydraulic oil	Actuator	7.0 MPa	1,015 psi	70 bar
C	Dry air Hydraulic oil	Air blow Actuator Mating detection	0.2 MPa	29 psi	2 bar
D	Oil based coolant Water soluble coolant	Coolant through	7.0 MPa	1,015 psi	70 bar
	Oil mist Dry air	Air blow Actuator Mating detection	1.0 MPa 1.0 MPa 0.2 MPa	145 psi 145 psi 29 psi	10 bar 10 bar 2 bar
	Hydraulic oil	Actuator	7.0 MPa	1,015 psi	70 bar

EMS6P-12703 (6 port type)

All ports adopts highly wear-resistant mechanical seals.