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Inline Filter LFM with
Differential Pressure Relief Valve
up to 120 l/min, up to 63 bar
1. TECHNICAL SPECIFICATIONS
1.1 FILTER HOUSING
Construction
The filter housings are designed
in accordance with international
regulations. They consist of a filter
head with screw-in filter bowl.
Standard equipment:
With differential pressure controlled z
relief valve
Port for clogging indicator in filter z
head
1.2 FILTER ELEMENTS
HYDAC filter 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
LFM 3 µm 5 µm 10 µm 20 µm
60 6.5 7.3 7.8 8.0
110 13.8 15.5 16.4 16.9
140 18.1 20.3 21.5 22.2
Filter elements are available with the
following pressure stability values:
Betamicron
®
(BN4HC): 20 bar
1.4 SEALS
NBR (= Perbunan)
1.5 MOUNTING
As inline filter
1.6 SPECIAL MODELS AND
ACCESSORIES
Pressure release / oil drain plug z
(SO184)
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 fluids z
VDMA 24568 HETG, HEES, HEPG
Non-flam operating fluids HFA, HFB, z
HFC and HFD
Operating fluids 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 63 bar
Fatigue strength at nominal pressure 10
6
load cycles
from 0 to nominal pressure
Temperature range -30 °C to +100 °C
(LFM 140: -30 °C to -10 °C:
p
max
=31.5 bar)
Material of filter head aluminium
Material of filter bowl aluminium (steel on LFM 140)
Type of clogging indicator VM (differential pressure indicator
up to 210 bar operating pressure)
Pressure setting of clogging indicator 2 bar (others on request)
Cracking pressure of diff. pressure relief valve 3.5 bar (others on request)
Symbol for hydraulic systems
LFM 60 LFM 110 LFM 140
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LFM BN/HC 110 F C 10 D 1 . X /-L24
Filter type
LFM
Filter material of element
BN/HC Betamicron
®
(BN4HC)
Size of filter or element
LFM: 60, 110, 140
Operating pressure
F = 63 bar
Type and size of port
Type Port Filter size
60 110 140
C G ¾
z z z
Filtration rating in µm
BN4HC: 3, 5, 10, 20
Type of clogging indicator
Y with plastic blanking plug in indicator port
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
1
Modification number
X the latest version is always supplied
Supplementary details
DBV5.5 cracking pressure of pressure relief valve 5.5 bar
L... light with appropriate voltage (24V, 48V, 110V, 220V)  only for clogging indicators
LED 2 light emitting diodes up to 24 Volt type D
SO 184 pressure release / oil drain plug
V FPM seals
2. MODEL CODE (also order example)
2.1 COMPLETE FILTER
0110 D 010 BN4HC /-V
Size
0060, 0110, 0140
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 VM 2 D . X /-L24
Type
VM differential pressure indicator up to 210 bar operating pressure
Pressure setting
2 standard 2 bar, others on request
Type of clogging indicator
D (see point 2.1 )
Modification number
X the latest version is always supplied
Supplementary details
L..., LED, V (for descriptions, see point 2.1)
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3. FILTER CALCULATION /
SIZING
The total pressure drop of a filter at a
certain flow 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/dm
3
and a
kinematic viscosity of 30 mm
2
/s.
In this case, the differential pressure
changes proportionally to the density.
3.2 GRADIENT COEFFICIENTS (SK) FOR FILTER ELEMENTS
The gradient coefficients in mbar/(l/min) apply to mineral oils with a kinematic
viscosity of 30 mm
2
/s. The pressure drop changes proportionally to the change in
viscosity.
LFM 60/110/140
LFM BN4HC
3 µm 5 µm 10 µm 20 µm
60 28.9 20.4 13.2 7.9
110 14.9 10.7 6.6 3.7
140 12.8 8.2 4.8 2.9
∆p [bar]
Q [l/min]
BN4HC: LFM 60
∆p [bar]
BN4HC: LFM 110
∆p [bar]
Q [l/min]
BN4HC: LFM 140
∆p [bar]
Q [l/min]
Q [l/min]
140
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4. DIMENSIONS
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 modifications.
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: filter@hydac.com
LFM Weight incl. Vol. of pressure
Element [kg] chamber [l]
60 1.9 0.20
110 2.3 0.33
140 4.5 0.40
outlet
G 3/4 x 16
deep
LFM 60 = 206.5
LFM 110 = 274.5
LFM 140 = 318.0
inlet
G 3/4 x 16 deep
tank connection
M18 x 1.5 x 12 deep
M6 x 9 deep
