Automatic coupling nipple,
threaded design

Order no.	Article no.	for coupling under pressure	for pressure-free coupling	Thread [A]	Nominal bore [NW]	max. operating pressure [bar]	Min. coupling force * (N)	max. coupling force [N]	Q max. [l/min]	Weight [g]	CAD	SC
567058	6989NA-05-01	●	-	M24 x 1,5	5	350	130	5,39	12	50
567059	6989NA-05-02	-	●	M24 x 1,5	5	350	130	5,39	12	50

Design:

Body and internal parts made of stainless steel. Seals made of NBR, Viton and FKM.

Application:

Couplings are used for the leakage-free connection of hydraulic oil supplies. The coupling elements are installed in a body. The sealing between coupling mechanism and nipple is axial, and installed in the coupling mechanism. If the seal is worn, it can be replaced.
The coupling mechanism must always be used in combination with a nipple of the same system. Depending on the version, the couplings can be connected at the maximum operating pressure. The patented automatic coupling mechanism on the system connects coupling components and/or components without additional stroke. For example, the hydraulically actuated system dispenses with the lifting device otherwise needed on rotary tables of machine tools Shuttle tables or pallets can be coupled to the rotary table solely by radial movement.

Features:

Wherever no coupling stroke is possible, this coupling can be connected at a separate control pressure. The gap between coupling nipple and coupling mechanism can be between 0.6 and 1.0 mm. The faces of the coupling surfaces on coupling nipple and coupling mechanism are flat. The user can therefore position them for connection from any axial and/or radial position subject to compliance with the positioning tolerance. The coupling stroke is then performed by an integrated control piston A. It is possible to control individual couplings in a targeted manner. Control pressure A should be applied at the same pressure as medium pressure P. With control connection A depressurised, the coupling mechanism is always in its default position. The coupling force between coupling nipple and mechanism due to hydraulic pressure is given by the formula F [N] = 15.4 x p [bar] and must be applied in a force-locking or form-locking manner from the outside. The coupling mechanism should be operated in a dual-action manner.

Note:

The axial sealing surfaces on the front must be protected from soiling. Because the coupling elements have smooth, uninterrupted sealing surfaces, the danger of them being soiled is reduced, and the ease with which the user can clean them before the coupling process is increased. Good results can be achieved by washing them off and blowing clean with compressed air.
Spacing of nipple/mechanism: 0.8 mm +/- 0.2 mm
Positioning tolerance in radial direction with coupling elements: +/- 0.2 mm
Operating temperature: -10°C to +80°C
Screw in tool: Order no. 567095

Advantage:

- no additional coupling stroke required
- can be connected without pressure
- targeted activation of individual couplings is possible
- coupling elements made of stainless materials.