PRESSURE GAUGE WITH FLUID FILLING
ABZMM
Material #: R900771208
Model : ABZMM 63- 250BAR/MPA-U/V-G
Pressure gauges are pressure measuring instruments for measuring and displaying pressure in hydraulic systems Housing made of stainless steel Design according to standard EN 837-1 Pressure display in bar/MPa or bar/psi Bi-colored scale Measuring connection at the back or bottom Mounting type with screws or brackets
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Pressure gauges are pressure measuring instruments for measuring and displaying pressure in hydraulic systems Housing made of stainless steel Design according to standard EN 837-1 Pressure display in bar/MPa or bar/psi Bi-colored scale Measuring connection at the back or bottom Mounting type with screws or brackets
Ordering code
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
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ABZM |
M |
‒ |
‒ |
/ |
Power unit accessories |
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01 |
Measuring devices |
ABZM |
Pressure gauge |
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02 |
Pressure gauge with bourdon tube |
M |
Size |
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03 |
DN40 |
40 |
DN63 |
63 |
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DN100 |
100 |
|
Display range |
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04 |
See selection table |
… |
Version |
||
05 |
Double scale in pressure range bar and MPa |
BAR/MPA |
Double scale in pressure range bar and psi |
BAR/PSI |
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Position of the measuring port |
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06 |
On the back side |
R |
At the bottom |
U |
|
Mounting type |
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07 |
With fitting |
V |
With mounting bracket |
B |
|
Option |
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08 |
Without option |
‒ |
Red marking at the dial, e.g. at 330 bar |
330 |
|
Pressure gauge filling |
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09 |
With glycerin (standard) |
G |
With silicone filling as low-temperature version |
T |
Order example: Pressure gauge with housing Ø63 mm and double scale with a display range from 0 to 25 bar, measuring port at bottom, without mounting element: ABZMM-63-25 BAR/MPA-U/V-G |
Display range |
||
bar |
MPa |
psi |
10 |
1 |
145 |
16 |
1,6 |
230 |
25 |
2,5 |
362 |
40 |
4 |
580 |
60 |
6 |
870 |
100 |
10 |
1450 |
160 |
16 |
2320 |
250 |
25 |
3625 |
400 |
40 |
5800 |
600 |
60 |
8700 |
1000 |
100 |
14500 |
DN40Connection on the back side ![]() |
DN63Port on bottom ![]() |
DN100Port on bottom ![]() |
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DN63Connection on the back side ![]() |
DN100Connection on the back side ![]() |
Resistance
Hydraulic fluids |
Resistant |
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Mineral oils |
Mineral oil |
HLP |
according to DIN 51524 |
|
Flame-resistant hydraulic fluids |
Water solutions |
HFC |
according to VDMA 24317 |
|
Phosphoric acid esters |
HFD-R |
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Organic esters |
HFD-U |
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Fast bio-degradable hydraulic fluids |
Triglycerides (rape seed oil) |
HETG |
according to VDMA 24568 |
|
Synthetic esters |
HEES |
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Polyglycols |
HEPG |
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Water |
Water |
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Gases |
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Nitrogen (others gases upon request) |
For applications outside these parameters, please consult us!
Symbol

Dimensions: Pressure gauge DN40, with dual scale – connection centrally at the rear
Dimensions in mm

1 |
Bleed or pressure unloading opening |
Dimensions: Pressure gauge DN63, with dual scale – connection at the bottom
Dimensions in mm

1 |
Bleed or pressure unloading opening |
Dimensions: Pressure gauge DN63, with dual scale – connection centrally at the rear, with mounting clamp
Dimensions in mm

1 |
Bleed or pressure unloading opening |
Break-through Ø63+1 mm
Mounting bracket is included in the scope of delivery of the pressure gauge.
Design according to the manufacturer’s choice.
Dimensions: Pressure gauge DN100, with dual scale – connection at the bottom
Dimensions in mm

1 |
Bleed or pressure unloading opening |
Dimensions: Pressure gauge DN100, with dual scale – connection eccentrically at the rear, with mounting clamp
Dimensions in mm

1 |
Bleed or pressure unloading opening |
Break-through Ø101+1 mm
Mounting bracket is included in the scope of delivery of the pressure gauge.
Design according to the manufacturer’s choice.
Dimensions: Adapter for direct installation of the pressure gauge
Version "A"
Reducing piece for mounting cavity to ISO 1179

Version "B"
Reducing piece for mounting cavity to ISO 11926-1

Version |
PN |
d1 |
d2 |
Ød3 |
Ød4 |
l |
l1 |
l2 |
SW |
Denomination |
Part number |
mm |
mm |
mm |
mm |
mm |
|||||||
A | 630 | G1/4A | G1/4 | 4 | 19 | 34 | 12 | 14.5 | 22 | REDUZIERSTUECK G1/4-G1/4 /FKM | R901156422 |
400 | G1/4A | G1/2 | 4 | 19 | 35 | 12 | 16 | 27 | REDUZIERSTUECK G1/4-G1/2 /FKM | R901156423 | |
B | 630 | 7/16-20UNF | G1/4 | 4 | 16 | 31 | 9 | 14.5 | 22 | REDUZIERSTUECK 7/16-20UNF-G1/4 /FKM | R901156316 |
400 | 7/16-20UNF | G1/2 | 4 | 16 | 32 | 9 | 16 | 27 | REDUZIERSTUECK 7/16-20UNF-G1/2 /FKM | R901156317 |
Order example
Reducing piece made of steel, galvanised and yellow-chromated as surface protection G1/4A, female thread = G1/2 with seal ring item 1, material FKM and seal ring item 2, material Cu
REDUZIERSTUECK G1/4-G1/2 /FKM, Material no. R901156423
Spare part: seal ring item 1
Version |
Material |
Denomination |
Part number |
A | FKM | PROFILDICHTUNG M14X1,5+G1/4 FKM | R900012502 |
B | FKM | O-Ring 8,92x1,83-FKM80+-5SH | R900024577 |
Spare part: Seal ring item 2
For thread d2 |
Material |
Ød5 |
Ød6 |
s |
Denomination DICHTRING.... |
Part number |
mm |
mm |
mm |
||||
G1/4 | Cu | 5.9 | 9.3 | 3.2 | 5,9/9,3X3,2-CU NR:9090800 | R900004667 |
G1/2 | Cu | 8 | 14.8 | 4.2 | 8,0/14,8X4,2-CU NR:9090819 | R900218724 |

Seal ring for metal sealing. After sealing has been achieved, the pressure gauge can still be turned by 360°, so that any desired position can be set.
Installation information
When assembling the measuring line at the pressure gauge, the pressure gage connection piece (SW14; SW22) is to be held by means of a counter wrench. Bleeding and/or pressure relief openingThe pressure gauges are equipped with bleeding facilities at the top side of the housings. Before commissioning the pressure gauges, the bleeding facilities are to be manually set from the “closed” position to the “open” position in order to avoid measuring errors.Marking on the dial
On dual scales, the lettering of the outer scale division (bar) is black, that of the inner scale division red.
Note: Single or dual scales for other pressure ranges (psi, kPa, MPa) on request.

1 |
Part number |
2 |
Accuracy class according to DIN EN 837 |
3 |
"REXROTH" logo |
Normative cross-reference
DIN EN 837-1
Pressure gauges - part 1: Bourdon tube pressure gauges; dimensions, metrology, requirements and testing
DIN EN 837-2
Pressure gauges - part 2: Selection and installation recommendations for pressure gauges
DIN 51524
Pressure fluids; hydraulic oils
VDMA 24317
Fluid power - flame-retardant hydraulic fluids – technical minimum requirements
VDMA 24568
Fluid power; fast bio-degradable hydraulic fluids; technical minimum requirements;
Safety note according to Pressure Equipment Directive 97/23/EC
Pressure gauges are classified as pressure-holding equipment according to Article 1, Paragraph 2.1.4 of the Pressure Equipment Directive. The volume of the pressurised housings is < 0,1 l.
According to Annex 2, Diagram 4 (fluids) and Diagram 2 (nitrogen) the pressure gauges according to the present data sheet R.50205 are subject to the Pressure Equipment Directive up to PS = 1000 bar. According to Article 3, Paragraph 3 they are manufactured according to "good engineering practice" and are not CE-marked.
Use in potentially explosive atmospheres according to Directive 94/9/EC (ATEX)
The pressure gauges are provided with stainless steel housings which cannot generate igniting sparks according to DIN EN 13463-5.
The maximum surface temperature depends not on the pressure gauges, but mainly on the relevant fluid temperature and must therefore be assessed within the risk analysis of the power unit/block.
Because the pressure gauge according to the present data sheet R.50205 do not include any potential sources of ignition, they do not fall under the ATEX Directive and are not CE-marked.