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Inline Filter MFM
up to 100 l/min, up to 280 bar
1. TECHNICAL
SPECIFICATIONS
1.1 FILTER HOUSING
Construction
The lter housings are designed
in accordance with international
regulations. They consist of a lter
head with screw-in lter bowl.
Standard equipment:
with bypass valve z
connection for a clogging indicator on z
the top of the head as standard
(4 mounting holes)
Filters are supplied phosphate-plated z
and primed.
1.2 FILTER ELEMENTS
HYDAC lter elements are validated
and their quality is constantly
monitored according to the following
standards:
ISO 2941 z
ISO 2942 z
ISO 2943 z
ISO 3724 z
ISO 3968 z
ISO 11170 z
ISO 16889 z
Contamination retention capacities in g
Betamicron
®
BN4HC
MFM 3 µm 5 µm 10 µm 20 µm
35 7.2 8.1 8.6 8.8
55 14 15.8 16.6 17.2
75 21.6 24.3 25.7 26.5
95 27.5 30.9 32.7 33.7
Filter elements are available with the
following pressure stability values:
Betamicron
®
(BN4HC): 20 bar
1.4 SEALS
NBR (= Perbunan)
1.5 MOUNTING
As inline lter
1.6 SPECIAL MODELS AND
ACCESSORIES
Connection for a clogging indicator
on the side of the head (3 mounting
holes)
1.7 SPARE PARTS
See Original Spare Parts List
1.8 CERTIFICATES AND APPROVALS
On request
1.9 COMPATIBILITY WITH
HYDRAULIC FLUIDS TO ISO 2943
Hydraulic oils H to HLPD DIN 51524 z
Lubrication oils DIN 51517, API, z
ACEA, DIN 51515, ISO 6743
Compressor oils DIN 51506 z
Biodegradable operating uids VDMA z
24568 HETG, HEES, HEPG
Operating uids with high water z
content (>50% water content) on
request
1.10 IMPORTANT INFORMATION
Filter housing must be earthed z
When using electrical clogging z
indicators, the electrical power supply
to the system must be switched off
before removing the clogging indicator
connector.
1.3 FILTER SPECIFICATIONS
Nominal pressure 280 bar
Fatigue strength 0...280 bar, min. 10
7
load cycles
0...320 bar, min. 10
5
load cycles
Temperature range -10 °C to +100 °C
(-30 °C to -10 °C: p
max
= 140 bar)
Material of lter head EN-GJS-400-15
Material of lter bowl Steel
Type of clogging indicator VD (differential pressure indicator
up to 420 bar operating pressure)
Pressure setting of clogging indicator 5 bar (others on request)
Bypass cracking pressure 7 bar (others on request)
Symbol for hydraulic systems
MFM 35 MFM 55 MFM 75 MFM 95
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MFM BN/HC 55 O D 10 D 4 . X /-L24
Filter type
MFM
Filter material of element
BN/HC Betamicron
®
(BN4HC)
Size of lter or element
MFM: 35, 55, 75, 95
Operating pressure
O = 280 bar
Type and size of port
Type Port Filter size
35 55 75 95
A M18 x 1.5
z z z z
B G ½
z z z z
D M22 x 1.5
z z z z
H G ¾
z z z z
Filtration rating in µm
BN4HC: 3, 5, 10, 20
Type of clogging indicator
W without port for clogging indicator
A with steel blanking plug in indicator port
B visual
for other clogging indicators
C electrical
see brochure no. 7.050../..
D visual and electrical
Type code
3 clogging indicator port on side of head - 3 mounting holes
4 clogging indicator port on top of head - 4 mounting holes
Modication number
X the latest version is always supplied
Supplementary details
B7 standard: cracking pressure of bypass 7 bar
L... light with appropriate voltage (24, 48, 110, 220 Volt) only for clogging
LED 2 light emitting diodes up to 24 volt indicators type D
V FPM seals
W suitable for HFA and HFC emulsions
WAL right-angled bracket for side mounting, inlet on left (only possible for type code 4.x)
WAR right-angled bracket for side mounting, inlet on right (only possible for type code 4.x)
2. MODEL CODE (also order example)
2.1 COMPLETE FILTER
0055 D 010 BN4HC /-V
Size
0035, 0055, 0075, 0095
Type
D
Filtration rating in µm
BN4HC: 003, 005, 010, 020
Filter material
BN4HC
Supplementary details
V (for descriptions, see point 2.1)
2.2 REPLACEMENT ELEMENT
2.3 REPLACEMENT CLOGGING INDICATOR VD 5 D . X /-L24
Type
VD differential pressure indicator up to 420 bar operating pressure
Pressure setting
5 standard 5 bar, others on request
Type of clogging indicator
D (see point 2.1)
Modication number
X the latest version is always supplied
Supplementary details
L..., LED, V, W (for descriptions, see point 2.1)
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3. FILTER CALCULATION /
SIZING
The total pressure drop of a lter at a
certain ow rate Q is the sum of the
housing ∆p and element ∆p and is
calculated as follows:
∆p
total
= ∆p
housing
+ ∆p
element
∆p
housing
= (see point 3.1)
∆p
Element
= Q • SK* • viscosity
1000 30
(*see point 3.2)
For ease of calculation, our Filter
Sizing Program is available on request
free of charge.
NEW: Sizing online at www.hydac.com
3.1 ∆P-Q HOUSING GRAPHS BASED
ON ISO 3968
The housing graphs apply to mineral
oil with a density of 0.86 kg/dm³ and a
kinematic viscosity of 30 mm²/s.
In this case, the differential pressure
changes proportionally to the density.
3.2 GRADIENT COEFFICIENTS (SK) FOR FILTER ELEMENTS
The gradient coefcients in mbar/(l/min) apply to mineral oils with a kinematic
viscosity of 30 mm²/s. The pressure drop changes proportionally to the change in
viscosity.
MFM - Port M18 x 1.5 / G ½
MFM BN4HC
3 µm 5 µm 10 µm 20 µm
35 23.6 19.0 14.8 9.3
55 13.7 11.0 8.1 4.8
75 9.3 7.5 5.3 3.1
95 7.5 6.0 4.1 2.4
∆p [bar]
Q [l/min]
BN4HC: MFM 35
∆p [bar]
BN4HC: MFM 55
∆p [bar]
Q [l/min]
BN4HC: MFM 75
∆p [bar]
Q [l/min]
MFM - Port M22 x 1.5 / G ¾
∆p [bar]
Q [l/min]
∆p [bar]
Q [l/min]
BN4HC: MFM 95
Q [l/min]
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4. DIMENSIONS
STANDARD: VERSION 4.X SPECIAL VERSION 3.X
NOTE
The information in this brochure relates to the operating
conditions and applications described.
For applications or operating conditions not described,
please contact the relevant technical department.
Subject to technical modications.
Filtertechnik GmbH
Industriegebiet
D-66280 Sulzbach/Saar
Tel.: 0 68 97 / 509-01
Fax: 0 68 97 / 509-300
Internet: www.hydac.com
E-Mail: lter@hydac.com
MFM Weight incl. Vol. of pressure
element [kg] chamber [l]
35 3.7 0.24
55 4.2 0.39
75 4.7 0.56
95 5.1 0.69
type code
label
MFM 35 = ~158
Ø 34/1 deep
mounting thread
M8 x 12/16 deep
MFM 55 = ~204
MFM 75 = ~257
MFM 95 = ~297
connection for
clogging indicator
connection for
clogging indicator
mounting thread
M8 x 12/16 deep