REXROTH MKD025A-144, Manual, Page: 122 / 184

13-4
Application Instructions Synchronous Motors MKD
19.05.2004 Version7.0 DOK-MOTOR*-MKD*******-PR07-EN-P
Option sealing air “sealing air: principle” connection
Sealing air connectors are available for MHD motors. They are attached
to the motor by simply replacing the motor flange socket cover. The
overpressure inside the motor prevents penetrating oils, aggressive
coolants, and the like from entering.
Note : When mounting the motor flange socket covers with sealing
air connector, ensure that the O-rings are properly seated.
The degree of protection required is ensured only with correct
assembly.
0,2 bar
2
3
1
1
1
4
PrinzipSperrluft.fh7
(1): Splashwater, coolant
(2): Compressed-air line (plastic pipe, type PA 4 x 0.75, or equivalent)
(3): Overpressure inside the motor
(4): Sealing air connector accessories
Fig. 13-6: Diagram illustrating the sealing air principle
Pressure 0.1...0.2 bar, max. 0.3 bar
Air free from dust and oil
relative air humidity 20...30%
To ensure the IP 67 degree of protection, the following tightening
torques of the cover screws must be kept during mounting:
Set of accessories Tightening torque in Nm
SUP-M01-MKD (terminal box) 2,5
SUP-M03-MHD (INS0613) 1,0
SUP-M01-MHD (INS0480) 3,0
SUP-M02-MHD (INS0380) 3,0
Fig. 13-7: Tightening torques
Rexroth Mecman GmbH
Bartweg 13
D- 30453 Hannover
Postfach 91 07 62
D- 30427 Hannover
Phone: +49 (0) 5 11 21 36 - 0
Fax: +49 (0) 5 11 21 36 - 269
www.boschrexroth.de
www.rexroth-mecman.de
Compressed-air data:
Tightening torques
Supplier’s recommended plastic
pipe