User Manual

2/4 Bosch Rexroth AG
VS RE 95148/04.08
Type
01
Contamination switch
VS
Electrical connection 18, 33 22, 26
02
Integrated plug connector
to DIN 43650 / IEC 4400
 
S
Connecting strands with protective she-
ath and socket DEUTSCH DT04, 2-pin
–

L
Screw thread
03
M18x1,5
18
M22x1,5
22
M26x1,5
26
M33x2
33
Switch contact
04
Separate contact
S
Series
05
2
Index
06
2
 = available – = not available
VS / 2 2
01 02 03 04 05 06
Ordering Code
The contamination switch VS detects metallic ferromagnetic
impurities in oil. Installed in an axial piston unit, the contamina-
tion switch VS provides early warning of wear processes and
makes it possible to avoid consequential damage in good time.
The contamination switch VS is screwed into the existing bores
(e.g. case drain ports) of hydraulic pumps and hydraulic mo-
tors. Most abrasion is likely to occur in the case drain area. The
plug connector should be fitted so that it faces downwards in
order to promote the accumulation of particles due to gravity.
Ferromagnetic impurities in the oil are attracted by a permanent
magnet on the measuring surface of the contamination switch
VS. As the particles accumulate, they form an electric bridge
between the magnet and adjacent metal contacts. This switch
signal can then be used to activate an alarm via a relay, for
example, or to switch off the hydraulic system.
The magnet always forms one of the two switch contacts. A
separate contact which is isolated from the switch housing
forms the second switch contact.
Two different versions are also available for the electrical con-
nection: either an integrated plug connector with mating plug
or a free plug connector on the end of a connecting lead with
two strands and a protective sheath.
Main part
Supplied with sealing ring
Supplied with mating plug (connection version S)
–
–
Material Number
Variants Material Number
VSS18S/22 R902601956
VSS22S/22 R902601957
VSS26S/22 R902601958
VSS33S/22 R902601959
VSL22S/22 R902601963
VSL26S/22 R902601964
Description