RoHS Series FH Hydraulic Filters These suction filters are designed for installation between the pump and reservoir tank. Their main function is to protect the pump. Page Accessory (Option) 1518 1522 1526 1530 1534 1537 1541 — 1545 Series Vertical Suction Filter Series FHIA Suction Filter with Case Series FH99 Suction Guard Series FHG Line Filter Series FH34/44/54/64 Vertical Return Filter Series FHBA Return Filter Series FH100 Oil Filter Series FH150 Magnetic Separator Series FHM Operating pressure Negative pressure Negative pressure Negative pressure Max. 3.5, 7, 14, 21 MPa Max. 1.6 MPa Max. 1 MPa Max. 1 MPa — Port size 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3 3/8, 1/2, 3/4, 1, 1 1/4 1 1/2, 2, 2 1/2, 3 3/4, 1 1/4, 1 1/2 3/4, 1, 1 1/4, 1 1/2, 2 2 1/2, 3 1/4, 3/8, 1/2 — Element (µm) nominal filtration Micromesh 74, 105, 149 Micromesh 74, 105, 149 Micromesh 74, 105, 149 Paper 5, 10, 20 (Micromesh) Paper 5, 10, 20 Micromesh 5, 10, 20 Paper 5, 10, 20 Micromesh 74, 105 Paper 5, 10, 20 (Micromesh) — Differential pressure indicator (CB-H) Differential pressure indication switch (CB-H) Blanking cap Differential pressure indicator (CB-H) Differential pressure indication switch (CB-H) Blanking cap Differential pressure indicator (CB-H) Differential pressure indication switch (CB-H) Blanking cap Differential pressure indicator (CB-H) Differential pressure indication switch (CB-H) Blanking cap Differential pressure indicator (CB-H) Differential pressure indication switch (CB-H) Blanking cap Differential pressure indicator (CB-H) Differential pressure indication switch (CB-H) Blanking cap Bracket Differential pressure indicator (CB-H) Differential pressure indication switch (CB-H) Air breezer Cap 1517 HOWFH
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RoHS
Series FHHydraulic Filters
These suction filters are designed for installation between the pump and reservoir tank. Their main function is to protect the pump.
PageAccessory (Option)
1518
1522
1526
1530
1534
1537
1541
— 1545
Series
Vertical Suction FilterSeries FHIA
Suction Filter with CaseSeries FH99
Suction GuardSeries FHG
Line FilterSeries FH34/44/54/64
Vertical Return FilterSeries FHBA
Return FilterSeries FH100
Oil FilterSeries FH150
Magnetic SeparatorSeries FHM
Operatingpressure
Negativepressure
Negativepressure
Negativepressure
Max.3.5, 7, 14,21 MPa
Max.1.6 MPa
Max.1 MPa
Max.1 MPa
—
Port size
1/2, 3/4, 1, 1 1/4, 1 1/2,2, 2 1/2, 3, 3 1/2, 4
1/2, 3/4, 1, 1 1/4, 1 1/2,2, 2 1/2, 3, 3 1/2, 4
1/2, 3/4, 1, 1 1/4, 1 1/2,2, 2 1/2, 3
3/8, 1/2, 3/4, 1, 1 1/41 1/2, 2, 2 1/2, 3
3/4, 1 1/4, 1 1/2
3/4, 1, 1 1/4, 1 1/2, 22 1/2, 3
1/4, 3/8, 1/2
—
Element (µm)nominal filtration
Micromesh74, 105, 149
Micromesh74, 105, 149
Micromesh74, 105, 149
Paper5, 10, 20
(Micromesh)
Paper5, 10, 20
Micromesh5, 10, 20
Paper5, 10, 20
Micromesh74, 105
Paper5, 10, 20
(Micromesh)
—
Differential pressure indicator (CB-H)Differential pressure indication switch (CB-H)Blanking cap
Differential pressure indicator (CB-H)Differential pressure indication switch (CB-H)Blanking cap
Differential pressure indicator (CB-H)Differential pressure indication switch (CB-H)Blanking cap
Differential pressure indicator (CB-H)Differential pressure indication switch (CB-H)Blanking cap
Differential pressure indicator (CB-H)Differential pressure indication switch (CB-H)Blanking cap
No air pocketsThere are no places for air pockets to form. This prevents damage to the pump and enables normal operation to start immediately.
Elimination of all collected matterAll collected matter can be disposed of reliably when the element is replaced. There is no dan-ger of collected matter dropping back into the tank.
No drain port requiredThe structure of the filter does not contain areas for drain fluid to collect, so there is no need to manually drain the pump.
Easy element replacementSimply open the cover to quickly replace the element without touching the pipes. The ele-ment is extracted from the top, so no fluid can leak out.
Compact and lightweightThe compact and lightweight design employs an aluminum casted housing.
Clogging sensorThe sensor indicates when the element is be-coming dirty, facilitating maintenance and help-ing to avoid pump damage such as cavitations.Differential pressure indicator/reset typeDifferential pressure indication switch/visual combined, non-reset type
Model Flange port size Note) Rated flow rate (L/min)
Model/Rated Flow Rate
CB-56H
CB-56H-V
CB-57H
CB-57H-V
AG-12H
AG-12H-W
AG-12H-V
Petroleum, Water-glycol, Emulsion
Phosphoric ester
Petroleum, Water-glycol, Emulsion
Phosphoric ester
Petroleum
Water-glycol, Emulsion
Phosphoric ester
Differential pressure indicator
Differential pressure indication switch(N.C. and N.O. common)
Blanking cap (for differential pressure indication part)
Description Part no. Note
Accessory/Option
Note) The material of the O-rings and seals differs depending on the hydraulic fluid used.Petroleum, Water-glycol, Emulsion: NBR; Phosphoric ester: FKM, EPDM
The symbol represented by indicates the type of applicable hydraulic fluid. N: Petroleum, W: Water-glycol, Emulsion, V: Phosphoric esterNote) Fitted with companion flange. (Flange configuration is exclusive to SMC.)
Conditions Fluid: Turbine oil Class 2 VG56 Viscosity: 45 mm2/s Filter material: Micromesh Nominal filtration: 74 µm to 149 µm
Flow Characteristics
Pre
ssur
e dr
op (
kPa)
Flow rate (L/min)
1518
∗ Refer to page 1549 for “Microswitch for differ-ential pressure indication switch”.
Vertical Suction Filter Series FHIA
COM.
N.O.N.C.
View port G1/2
FH I A N 04 M M R074
Differential Pressure IndicationTwo indication methods are available: differen-tial pressure indicator and differential pressure indication switch. These can be mounted on all filter models.
• When a value has been displayed, it will be automatically reset when the pump is stopped. (Non-reset type)
• This is a visual dual-purpose. Perform ele-ment replacement when the switch has actu-ated (when the red ring floats up and covers the entire view port).
Note) The material of seals (AL-196H-V to AL-201H-V) is EPDM.
Differential pressure indicator
Blanking cap
Hexagon socket head cap screw
Cover
Case
Relief valve
Spring washer
Element
r Base seal
e O-ring
e O-ring
q O-ring
w O-ring
Companion flange
Hexagon head boltIN
OUT
Differential pressureindication switch
Differential pressure indication switch
q Mounting
• Confirm IN and OUT before connecting.
• For maintenance, make sure to provide suffi-cient space above the filter for removing the element.
w Operation
• Operation of the differential pressure indicator in cold weather, such as during winter, mostly occurs due to high viscosity, so check wheth-er it is from clogging or not after normal op-eration starts.
• If the differential pressure indicator is the re-set type, make sure to reset it after normal operation starts in cold weather such as dur-ing winter.
• When using a differential pressure indication switch, if a filter clogged signal is incorpo-rated into the sequence circuit of the ma-chine, make sure to design the system so the filter clogged signal does not operate until normal operation starts.
e Element replacement
• When the pressure difference reaches 20 kPa during filter operation (actuating the differen-tial pressure indicator), stop operation and ei-ther wash or replace the element.
• During disassembly and assembly, check that there is no cracking of or damage to the O-rings.
• When washing the element, do not wipe it us-ing a stiff brush or rag.
• After washing the element, make sure the base seal is properly mounted.
Compact and lightweightThe compact and lightweight design employs an aluminum casted housing.
Prevents pump cavitationThe inlet size is larger than the outlet size to prevent pump cavitation.
Easy element maintenanceSimply open the cover to detach the element without touching the pipes.
Easy-mounting pipesThere is no mounting orientation, and two types are available: threaded and flange.
Accessories available for a variety of applicationsAvailable accessories include differential pres-sure indicators (differential pressure indicator or differential pressure indication switch), relief valves, and companion flanges.
Clogging sensorThe filter can be fitted with a differential pres-sure indicator (reset type) or differential pres-sure indication switch (visual combined, non-reset type).
Note) The material of the O-rings and seals differs depending on the hydraulic fluid used.Petroleum, Water-glycol, Emulsion: NBR; Phosphoric ester: FKM, EPDM
Note) Both flange and threaded connections are supported. However, only flange types for FH991-20 to FH991-32 are compatible. The flange configuration is exclusive to SMC. Tapered threaded types (female) conforming to JIS B 0203.
CB-54H
CB-54H-V
CB-55H
CB-55H-V
AG-12H
AG-12H-W
AG-12H-V
Petroleum, Water-glycol, Emulsion
Phosphoric ester
Petroleum, Water-glycol, Emulsion
Phosphoric ester
Petroleum
Water-glycol, Emulsion
Phosphoric ester
Differential pressure indicator
Differential pressure indication switch(N.C. and N.O. common)
Blanking cap (for differential pressure indication part)
Description Part no. Note
Accessory/Option
1522
Suction Filter with Case Series FH99
Replacement O-ring/Seal List (One each of the seal and O-ring types listed below are required per filter.)
Note 1) The symbol at the end of the element part no. indicates the hydraulic fluid type.N: Petroleum, W: Water-glycol, Emulsion, V: Phosphoric ester
Note 2) Refer to page 1548 for non-standard filtration.Note 3) Above elements require one element per filter.
Construction/Seal List
Differential pressure indicatorBlanking cap
Hexagon sockethead cap screw
Cover
Case
Relief valve
Elementr Seal (O-ring)
e Seal (O-ring)
q O-ring
w O-ring
Companion flange
IN
OUT
Differential pressureindication switch
Differential pressureindication switch
1523
FH
HOW
FH
A
Series FH99
∗ Refer to page 1549 for “Microswitch for differ-ential pressure indication switch”.
Reset button
View portView port
COM.
N.O.N.C.
G1/2
Differential Pressure Indication
q Mounting
• Confirm IN and OUT before connecting.
• For maintenance, make sure to provide suffi-cient space above the filter for removing the element.
w Operation
• Operation of the differential pressure indicator in cold weather, such as during winter, mostly occurs due to high viscosity, so check wheth-er it is from clogging or not after normal op-eration starts.
• If the differential pressure indicator is the re-set type, make sure to reset it after replacing the element or after normal operation starts in cold weather such as during winter.
• When using a differential pressure indication switch and if a filter clogged signal is incorpo-rated into the sequence circuit of the ma-chine, make sure to design the system so the filter clogged signal does not operate until normal operation starts.
e Element replacement
• When the pressure difference reaches 24 kPa during filter operation (actuating the differen-tial pressure indicator), stop operation and ei-ther wash or replace the element.
• During disassembly and assembly, check that there is no cracking of or damage to the O-rings.
• When installing and removing an element, do not scratch or damage it by touching the cor-ners of the case, etc.
• When washing the element, do not wipe it us-ing a stiff brush or rag.
Two indication methods are available: differen-tial pressure indicator and differential pressure indication switch. These can be mounted on all filter models.
• When a value has been displayed, it will be automatically reset when the pump is stopped. (Non-reset type)
• This is a visual dual-purpose. Perform ele-ment replacement when the switch has actu-ated (when the red ring floats up and covers the entire view port).
Note) Both flange and thread connections are supported. However, only flange types for FH991-20 to FH991-32 are compatible. The flange configuration is exclusive to SMC. Tapered thread types (female) conforming to JIS B 0203.
1525
FH
HOW
FH
Designed to prevent collected dust from falling into the tankAll collected dust can be disposed complete-ly when the element is replaced. There is no danger of collected matter dropping back into the tank.
No need to replace flushing oilSince all dust is eliminated during trial opera-tion, it is not necessary to replace flushing oil. This reduces both labor and wasted oil.
Easy maintenance and no air mixingNo special tools are required for mainte-nance, and insertion-type element replace-ment is quick and easy. This helps prevent air mixture into the suction line and pump damage.
Compact tank equipmentThe lubrication port strainer, suction filter, and air breather are all integrated into a single unit, reducing the volume of equip-ment around the tank.
Selection of connection methods and accessories for a variety of applica-tionsSix methods are available as standard. Dif-ferential pressure indicators (visual and switch) are available and can be selected to match the application.
Differential pressure indication switch(N.C. and N.O. common)
Description Part no. Note
Accessory/Option
Connection
Note) The material of the O-rings and seals differs depending on the hydraulic fluid used.Petroleum, Water-glycol, Emulsion: NBR; Phosphoric ester: FKM, EPDM
Female threaded connection ports are 1/2B to 2B only.Flange configuration is exclusive to SMC.
Note 1) The symbol at the end of the element part no. indicates the hydraulic fluid type.N: Petroleum, V: Phosphoric ester, W: Water-glycol, Emulsion.
Note 2) Refer to page 1548 for non-standard filtration.Note 3) Above elements require one element per filter.
(Max. T dimension)
Construction/Seal List
1527
FH
HOW
FH
A
Series FHG
∗ Refer to page 1549 for “Microswitch for differ-ential pressure indication switch”.
Flow Characteristics
Two indication methods are available: differen-tial pressure indicator and differential pressure indication switch. These can be mounted on all filter models.Direct mounting is possible if the connection method is L-block or S-block. Otherwise, an Rc1 female thread fitting is required.In addition, if no differential pressure indication is required, use a commercially available plug (R1).
• When a value has been displayed, it will be automatically reset when the pump is stopped. (Non-reset type)
• The element should be replaced when the switch is actuated.
• N.C. and N.O. common
Differential Pressure Indication
Differential Pressure Indication
w Operation
• Operation of the differential pressure indicator in cold weather such as during winter mostly occurs due to high viscosity, so check wheth-er it is from clogging or not after normal op-eration stars.
•Once the differential pressure indicator is trig-gered, the indication continues to be dis-played until the indicator is reset (by depress-ing the reset button), even if the pump stops operating.Reset after replacing the element and restart-ing operation, or after normal operation starts in cold weather such as during winter.
• When using a differential pressure indication switch and if a filter clogged signal is incorpo-rated into the sequence circuit of the ma-chine, make sure to design the system so the filter clogged signal does not operate until normal operation starts.
e Element replacement
• When the pressure difference reaches 24 kPa during filter operation (triggering the differen-tial pressure indicator), stop operation and ei-ther wash or replace the element.
• When replacing the element, check the O-rings and replace them if they are damaged.
• When installing and removing an element, do not scratch or damage it by touching the cor-ners of the case, etc.
• When washing the element, do not wipe it us-ing a stiff brush or rag.
r Removing the element
• Rotate the air breather (cap) one-third of a turn counterclockwise and remove it. Grasp the handle of the lubrication port strainer in-side and, while rotating it clockwise, pull it up vertically. The suction element is screwed onto one end of the tension bolt and along with the lubrication port strainer, can be removed and installed freely. Do not remove the suction ele-ment while the pump is operating.
t T dimension (length below flange neck) adjustment
• The product is shipped from the factory with the maximum T dimension, so the user must adjust it to the required T dimension.
• The T dimension adjustment range, relative to the standard T dimension, is ±30 mm for 1/2B to 1B and ±45 mm for 1 1/4B to 2B. The dimension for 2 1/2B to 3B is fixed, so no ad-justment is possible.
• Refer to the operating manual for details of the adjustment method.
y Lubrication
• Remove the air breather (cap) and lubricate through the lubricatioin port strainer. Be care-ful not to let oil, etc., get onto the cap while it is being removed.
Handling Precautions
q Mounting
• The portion of the suction guard below the oil tank mounting flange is installed inside the oil tank, so check to make sure it is clean when mounting it. For maintenance, make sure to provide sufficient space above the filter for re-moving the element.
•Use caution to ensure airtightness when con-necting an outlet and installing a differential pressure indicator (especially for the thread type).
• Ensure that the oil tank fluid volume (minimum fluid level MIN(r) dimension) is 30 mm for 1/2B to 1B, 60 mm for 1 1/4B to 1 1/2B, 80 mm for 2B, and 120 mm or more for 2 1/2B to 3B, measured when there is no turbu-lence in the flow from the element opening or fluctuation in the fluid level. Also, select a T di-mension (length below flange neck) that will ensure that the fluid level does not reach the lubrication port strainer.
∗ Weight values are for the minimum T dimension (symbol 1) in each standard T dimension.∗ The “OUT” direction can be mounted up to 90° to the left or right.
∗ Weight values are for the minimum T dimension (symbol 1) in each standard T dimension.∗ The differential pressure indication entry can be mounted up to 90° to the left or right.
∗ Weight values are for the minimum T dimension (symbol 1) in each standard T dimension.∗ The differential pressure indication entry can be mounted up to 90° to the left or right.
∗ Weight values are for the minimum T dimension (symbol 1) in each standard T dimension.
∗ Weight values are for the minimum T dimension (symbol 1) in each standard T dimension.
∗ Weight values are for the minimum T dimension (symbol 1) in each standard T dimension.∗ The “OUT” direction can be mounted up to 90° to the left or right.
L-type block
(75)
(50) E (Rc)
Differential pressure indication switch
Differential pressure indicator
L-type block female threaded companion flange
Differential pressure indication switch
Differential pressure indicator
(75)(50)
S-type block companion flange
(75)(50)
E (Rc) S-type block Differential pressure indication switch
Compact, solid, and safe designThe case and cover have undergone testing in which they were subjected 100,000 times to impacts equivalent 1.5 times the rated pressure (confirming to MIL standard).
Easy element replacementThe element is extracted from the top, and secured in place by inserting an O-ring seal. The element can be installed and removed easily, simplifying maintenance.
Reliable outlet sideA firm seal is secured through a special con-figuration combining a pressure clamp from an O-ring around the inner perimeter of the case with support from the cover, and there is no resistance when the cover is installed and removed.
Large drain exhaust portThe large M24 drain exhaust port assures rapid drainage.
Easy fluid flow direction reversalSimply turn the cover 180° relative to the case mounting base to reverse the fluid flow direction.
Clogging sensorThe filter can be mounted with a differential pressure indicator (reset type) or differential pressure indication switch (common with vi-sual, non-reset type).
Note) Tapered female thread connection conforming to JIS B 0203 is compatible. Flanges conforming to JIS B 2291 (21 MPa piping flanges for hydraulic use) SSA are compatible.
Port sizeThreaded
Rc Flange SSA
Note) The material of the O-rings and seals differs depending on the hydraulic fluid used. Petroleum, Water-glycol, Emulsion: NBR; Phosphoric ester: FKM
Note 1) The symbol at the end of the element part no. indicates the hydraulic fluid type. N: Petroleum, V: Phosphoric ester, W: Water-glycol, Emulsion (10 µm only)
Note 2) Refer to page 1548 for micromesh elements.Note 3) Above elements require one element per filter.
• When a value has been displayed, it will be automatically reset when the pump is stopped. (Non-reset type)
• This is a visual dual-purpose. Perform ele-ment replacement when the switch has actu-ated (when the red ring floats up and covers the entire view port).
• N.C. and N.O. common
q Mounting• Confirm INLET and OUTLET before mount-
ing. Then connect so that the drain is oriented downward. For maintenance, make sure to provide sufficient space above the filter for re-moving the element.
w Operation
• Operation of the differential pressure indicator in cold weather such as during winter mostly occurs due to high viscosity, so check wheth-er it is from clogging or not after normal op-eration starts.
•Once the differential pressure indicator is ac-tuated, the indication continues to be dis-played until the indicator is reset (by depress-ing the reset button), even if the pump stops operating.Reset after replacing the element and restart-ing operation, or after normal operation starts in cold weather such as during winter.
• When using a differential pressure indication switch and if a filter clogged signal is incorpo-rated into the sequence circuit of the ma-chine, make sure to design the system so the filter clogged signal does not operate until normal operation starts.
e Element replacement
• When the pressure difference reaches 0.275 MPa during operation (actuating the differen-tial pressure indicator), stop operation, drain the oil from the case, and replace the element.
• When replacing the element, check the O-rings and replace them if they are damaged.
• When installing and removing an element, do not scratch or damage it by touching the cor-ners of the case, etc.
r Others
• For the top cover O-ring, use a product of hardness 90 to prevent leaks or damage.
• If there is back pressure, install a check valve on the outlet side to prevent damage to the element.
• Turn the top cover 180° to reverse the oil flow direction.
• Use an auxiliary pipe or the like and apply force evenly when tightening the cap screws on the cover and case.
Two indication methods are available: differen-tial pressure indicator and differential pressure indication switch. These can be mounted on all filter models.
4 x M10 x 1.54 x M12 x 1.754 x M12 x 1.754 x M16 x 24 x M16 x 2 —4 x M10 x 1.54 x M10 x 1.54 x M12 x 1.754 x M12 x 1.754 x M16 x 24 x M16 x 24 x M20 x 2.54 x M22 x 2.5 —4 x M10 x 1.54 x M10 x 1.54 x M12 x 1.754 x M12 x 1.754 x M16 x 24 x M16 x 2 —4 x M10 x 1.54 x M10 x 1.54 x M12 x 1.754 x M12 x 1.754 x M16 x 24 x M16 x 2
—
—
40 48 56 65 73—
36 40 48 56 65 73 92103—
36 40 48 56 65 73—
36 40 48 56 65 73
—
—
1217172020—
1212171720202727—
121217172020—
222222223030
1.8
2.5
3.5
4.6
6.4
4.5
8.7
12.2
18.1
35.9
5.2
9.7
12.8
20.4
6.9
12.9
19.8
29
ModelWeight
(kg)d A B C D E F G H J J' K L M N P Q
(mm)
Threaded Rc Flange SSA
Note) Tapered female thread conforming to JIS B 0203 is compatible.Flanges conforming to JIS B 2291 (21 MPa pipe flanges for hydraulic use) SSA are compatible.
1533
FH
HOW
FH
Vertical Return Filter
Series FHBA RoHS
Pressurecontrolvalve
Pump
Vertical return filter
Oil tank
M
Machine
Compact design that does not clutter the top of the oil tankSince most of the filter case is inside the oil tank, very little space is occupied on the top of the tank.
No need for an OUTLET pipeThe filter case also functions as a fluid return pipe, so there is no need to attach a separate OUTLET pipe.
Easy maintenanceSimply open the cover and extract the element from the top of the filter. Replacement is quick and easy.
Designed to prevent collected dust from falling into the oil tankThe collected dust remains inside the element, so it cannot flow out when the relief valve is opened and all collected dust is removed from the case.
Two INLET portsThe filter has two INLET ports, oriented 180° from each other to provide more flexibility when routing pipes.
0.1
0.05
0.03
0.01
0.005
0.001100 30 50 100 300 500
06 10 12
The vertical return filters are designed for mounting directly on top of oil tanks for hydraulic systems. They prevent dust generated within the circuit from entering the tank and help keep the oil clean. This efficient configuration reduces the total number of filters required.
∗ Micromesh elements with other than the standard filtration are available. ∗ The paper elements for water-glycol is 10 µm only.Note) The material of the O-rings differs depending on the hydraulic fluid used.
• Confirm the IN orientation before mounting. Then connect so that the case is oriented downward. For maintenance, make sure to provide sufficient space above the filter for removing the element.
• The filter has two IN ports. If one is not used, it must be covered with a plug or the like.
• Before mounting the filter on the oil tank, confirm that r the O-ring (see “Construction”) is installed on the body.
• Ensure that the opening in the case (OUT) is al-ways below the fluid surface. Air could leak into the system if the fluid level drops below the out-let opening.
w Operation
• Operation of the differential pressure indicator in cold weather, such as during winter, mostly oc-curs due to high viscosity, so check whether it is from clogging or not after normal operation starts.
•Once the differential pressure indicator is trig-gered, the indication continues to be displayed until the indicator is reset (by depressing the re-set button), even if the pump stops operating.Reset after replacing the element and restarting operation, or after normal operation starts in cold weather such as during winter.
• When using a differential pressure indication switch and if a filter clogged signal is incorpo-rated into the sequence circuit of the machine, make sure to design the system so the filter clogged signal does not operate until normal op-eration starts.
e Element replacement
• When the pressure difference reaches 0.18 MPa during filter operation (actuating the differential pressure indicator), stop operation, and replace the paper element or wash the micromesh ele-ment. If the micromesh element has reached the end of its service life, replace it.
• When replacing the element, check the O-rings and replace them if they are damaged.
• When washing the micromesh element, do not wipe it using a stiff brush or rag.
Note 1) The symbol at the end of the element part no. indicates the hydraulic fluid type. N: Petroleum, Phosphoric ester, W: Water-glycol, Emulsion.Note 2) Refer to page 1548 for non-standard filtration.Note 3) Above elements require one element per filter.
Construction/Seal List
w Seal
e O-ring
r O-ring
t O-ring
Element
Hexagon socket head cap screw
Conical spring washerCover
Body
q O-ring
Case
Spring
Guide
w Seal
2 x Rc port size (Nominal size)
Blanking cap
(Top plate for oil tank)
When actuating relief valve
IN IN
OUT
1535
FH
HOW
FH
A
Series FHBA
∗ Refer to page 1549 for “Microswitch for differ-ential pressure indication switch”.
OUT
A A
øD
B BC
E
N
F F
COM.N.O.N.C.
View port G1/2
Two indication methods are available: differential pressure indicator and differential pressure indication switch. These can be mounted on all filter models.
• When a value has been displayed, it will be automatically reset when the pump is stopped. (Non-reset type)
• This is a visual dual-purpose. Perform element replacement when the switch has actuated (when the red ring floats up and covers the entire view port).
• N.C. and N.O. common
Differential Pressure IndicationDimensions
K
H
J
4 x øPMounting hole
4 x M
øL ± 3
K
Mounting base dimensions
( F)
IN IN
2 x Rc (d)
Rem
oval
dim
ensi
on G
Differential pressureindicator
Differential pressure indicator
( 34)
Differential pressureindication switch
Differential pressureindication switch
( 65)
62
3/4
1 1/4
1 1/2
Port size Rc (d)
55
75
A54
76
B 76
112
C65
89.1
D200
210
310
E299
342
442
F270
320
420
G 95
120
H100
128
J 75
100
K70
95
LM8
M10
M12
14
N10
12
P(mm)
Reset button
View port
1536
Return Filter
Series FH100 RoHS
Selection of elements for different applicationsDepending on the application, the user can choose among several standard element types, paper elements (5, 10 and 20 µm) and micro-mesh elements (74 and 105 µm).
Easy maintenanceThe element slides into place and is sealed with an O-ring, making it easy to install and remove.
Large drain exhaust outletThe large M16 drain exhaust outlet assures rapid drainage.
Clogging sensorThe filter can be fitted with a differential pres-sure indicator (reset type) or differential pres-sure indication switch (visual combined, non-reset type).
Note) The non-standard filtration is for micromesh elements only. Refer to page 1548 for details.
Note) The paper elements for water-glycol or emulsion is 10 µm only.
PM
PaperMicromesh
Element
012
PetroleumWater-glycol, Emulsion
Phosphoric ester
Note 1) The symbol at the end of the element part no. indicates the hydraulic fluid type. N: Petroleum, V: Phosphoric ester, W: Water-glycol, Emulsion (10 µm only for paper)
Note 2) Refer to page 1548 for non-standard filtration.Note 3) Above elements require one element per filter.
Construction/Seal List
Made to OrderNilX0
None (Standard)Non-standard filtration
Blanking cap
Cover
Case
Relief valve
e Seal washer
Element
q O-ring
w O-ring
DRAIN
IN OUT
Drain plug
Differentialpressure
indication switch
Differential pressureindication switch
Differential pressureindicator
1538
Return Filter Series FH100
∗ Refer to page 1549 for “Microswitch for differ-ential pressure indication switch”.
COM.N.O.N.C.
View port G1/2
Two indication methods are available: differen-tial pressure indicator and differential pressure indication switch. These can be mounted on all filter models.
• When a value has been displayed, it will be automatically reset when the pump is stopped. (Non-reset type)
• This is a visual dual-purpose. Perform ele-ment replacement when the switch has actu-ated (when the red ring floats up and covers the entire view point).
• N.C. and N.O. common
Differential Pressure Indication
q Mounting• Confirm IN and OUT before mounting. Then
connect so that the drain is oriented down-ward. For maintenance, make sure to provide sufficient space above the filter for removing the element.
w Operation
• Operation of the differential pressure indicator in cold weather, such as during winter, mostly occurs due to high viscosity, so check wheth-er it is from clogging or not after normal op-eration starts.
•Once the differential pressure indicator is ac-tuated, the indication continues to be dis-played until the indicator is reset (by depress-ing the reset button), even if the pump stops operating.Reset after replacing the element and restart-ing operation, or after normal operation starts in cold weather such as during winter.
• When using a differential pressure indication switch and if a filter clogged signal is incorpo-rated into the sequence circuit of the ma-chine, make sure to design the system so the filter clogged signal does not operate until normal operation starts.
e Element replacement
• When the pressure difference reaches 0.13 MPa during filter operation (actuating the dif-ferential pressure indicator), stop operation, drain the oil from the case, and replace the pa-per element or wash the micromesh element. If the micromesh element has reached the end of its service life, replace it.
• When replacing the element, check the O-rings and replace them if they are damaged.
• When washing the micromesh element, do not wipe it using a stiff brush or rag.
Compact and lightweightThe compact and lightweight design employs an aluminum alloy cover.
Easy maintenanceThe element slides into place, making it easy to install and remove.
Clogging sensorThe filter can be fitted with a differential pres-sure indicator (reset type) or differential pres-sure indication switch (visual combined, non-reset type).
Note) The material of the O-rings and seals differs depending on the hydraulic fluid used.Petroleum, Water-glycol, Emulsion: NBR; Phosphoric ester: FKM
CB-50H
CB-50H-V
CB-51H
CB-51H-V
AG-12H
AG-12H-W
AG-12H-V
B-44P
Petroleum, Water-glycol, Emulsion
Phosphoric ester
Petroleum, Water-glycol, Emulsion
Phosphoric ester
Petroleum
Water-glycol, Emulsion
Phosphoric ester
Differential pressure indicator
Bracket
Differential pressure indication switch(N.C. and N.O. common)
Blanking cap (for differential pressure indication part)
Description Part no. Note
Accessory/Option
—
1541
FH
HOW
FH
Replacement O-ring/Seal List (One each of the seal and O-ring types listed below are required per filter.)
Series FH150
Portsize
02 to 04
02 to 04
Applicablehydraulic fluid
Petroleum,Water-glycol,
Emulsion
Phosphoric ester
Material
NBR
FKM
q O-ringorder no.
(Nominal size)
KA01022
(1A-S65)
KA01105
(4D-S65)
w O-ringorder no.
(Nominal size)
KA00471
(1A-P30)
KA00104
(4D-P30)
FH 1 50 0 1 002 P 005Hydraulic filter
020304
1/43/81/2
Port size (Rc)
Differential pressure indication
1 None
Relief valve
BNil None
With bracket
Bracket
005010020
5 µm10 µm20 µm
Nominal filtration
PM
PaperMicromesh
Element
Replacement Element Part No. (Including O-ring for element)Model
FH150-02FH150-03FH150-04
5 µm
EP910-005N
10 µm
EP910-010N
20 µm
EP910-020N
Element size
ø53 x 90
Note 1) The symbol at the end of the element part no. indicates the hydraulic fluid type. N: Petroleum, V: Phosphoric ester, W: Water-glycol, Emulsion (10 µm only)
Note 2) Refer to page 1548 for micromesh elements.Note 3) Above elements require one element per filter.
∗ Refer to page 1549 for “Microswitch for differ-ential pressure indication switch”.
COM.N.O.N.C.
View port G1/2
Flow Characteristics
Two indication methods are available: differen-tial pressure indicator and differential pressure indication switch. These can be mounted on all filter models.
• When a value has been displayed, it will be automatically reset when the pump is stopped. (Non-reset type)
• This is a visual dual-purpose. Perform ele-ment replacement when the switch has actu-ated (when the red ring floats up and covers the entire view port).
• N.C. and N.O. common
Differential Pressure Indication
q Mounting• Confirm IN and OUT before mounting. Then
connect so that the case is oriented down-ward. For maintenance, make sure to provide sufficient space above the filter for removing the element.
w Operation
• Operation of the differential pressure indicator in cold weather, such as during winter, mostly occurs due to high viscosity, so check wheth-er it is from clogging or not after normal op-eration starts.
•Once the differential pressure indicator is ac-tuated, the indication continues to be dis-played until the indicator is reset (by depress-ing the reset button), even if the pump stops operating.Reset after replacing the element and restart-ing operation, or after normal operation starts in cold weather such as during winter.
• When using a differential pressure indication switch and if a filter clogged signal is incorpo-rated into the sequence circuit of the ma-chine, make sure to design the system so the filter clogged signal does not operate until normal operation starts.
e Element replacement
• When the pressure difference reaches 0.13 MPa during operation (actuating the differen-tial pressure indicator), stop operation and re-place the element.
• When replacing the element, drain the fluid from the case. Also, check the O-rings and replace them if they are damaged.
r Other
• Refer to the operating manual regarding the tightening torque for clamping ring.Use a commercially available hook wrench (applicable sizes 80 to 85 mm) for tightening and removing clamping rings.
q U-turn flow type w Underflow type e Overflow type
Magnetic Separator Installation Examples
Contaminant density of 200 ppm Separator after contaminant adsorption
Fluid after cleaning with magnetic separator (5 ppm)
These magnetic separators protect machinery from malfunctions, reduced precision, and burnout by adsorbing and eliminating contaminants in the fluid by means of magnetism. This helps extend the service life of hydraulic equipment.
Zero running costSince there are no consumable parts, the run-ning cost is basically zero and the magnetic separator can be used semi-permanently.
Extends service life of hydraulic fluidBy adsorbing and eliminating contaminants, the magnetic separator retards deterioration of the hydraulic fluid and makes it possible to extend the fluid replacement time.
Reduced maintenance costsThe magnetic separator prevents mechanical problems caused by contaminants such as abrasive particles and greatly reduces mainte-nance costs.
Model Applicable fluid storage volume (L/unit) Note) Weight (kg)Dimension (mm)
Model
Note) For example, three FHM100 magnetic separator units would be sufficient for a 300-liter fluid storage tank.
1545
FH
HOW
FH
Series FHM
FHMN 055
Magneticseparator
Petroleum, Water-glycol, Cutting oil, EmulsionF
luid
Magneticseparator
Hexagon sockethead cap screw
Base plate
MagnetCover Adsorption
surface
Magnet
Rubber caseAdsorption surface
Base plate
MagnetHexagon sockethead cap screw
CoverAdsorption surface
100
90
80
70
60
50
40
30
20
10
01 5 10 50 100
FHMN-055100200300400500
100
90
80
70
60
50
40
30
20
10
0
100200300400500
1 5 10 50 100
FHM-200
FHM-200
100
9080
7060
50
40
30
20
10
0
75
1 5 10 5030 100
FHM-100100200300400500
Fluid Iron Content Elimination Performance by Iron Particle Concentration
055 55 x t20
Main unit representative dimensions
FHM 100
100200
100 x t30200 x 140 x t40
Main unit representativedimensions
How to Order
Elim
inat
ion
ratio
(%
)
Flow-back count
Fluid: Hydraulic fluid
Elim
inat
ion
ratio
(%
)
Flow-back count
Fluid: Hydraulic fluid
Elim
inat
ion
ratio
(%
)
Flow-back count
Fluid: Hydraulic fluid
Example: Elimination ratio and concentration after using the FHM-100 for one hour under the following conditions.Conditions
Explanation of graph Explanation of graph
1. Volume of fluid in tank: 200 L2. Pump-out volume: 100 L/min3. Contaminant concentration of used fluid: 500 ppm (initial concentration, percentage by volume)4. Number of separators: 2 pcs. (applicable fluid storage volume of 100 L/unit)
Calculate the flow-back count (N).
N = = = Pump-out volume x Operation timeVolume of fluid in tank
100 x 60200
30
FHMN-055
Construction
FHM-100
Based on the elimination ratio data for the FHM-100 and the point where the 500 ppm line and flow-back count 30 line intersect (one hour after starting operation), the result is 75%.
1546
20
55
Magnetic Separator Series FHM
215
140
7020
42
115
10
0
15
32
Hexagon sockethead cap screw
(M6 x 10) 2 pcs.
Hexagon socket head cap screw(M6 x 10) 4 pcs.
FHM-200
FHM-100
Handling Precautions
FHMN-055
Dimensions
Mountingq The flat portion of the stainless steel cover functions as the con-
taminant adsorption surface. However, for FHM-055, the flat por-tion of the magnetic material functions as the contaminant adsorp-tion surface.
w Mount the magnetic separator in a location where fluid is constant-ly flowing by in laminar flow.
e Avoid locations such as near the suction pipe or return pipe, places where there is turbulence, and locations where the flow speed is 3 m/min or greater.
r If necessary, fix the separator in place. If frequent cleaning will be necessary, it can be suspended from the top panel of the tank.
t If a fluid switch (built-in lead switch) or the like is used, it should be installed in a location where it will not be affected by magnetism from the separator. (Refer to the technical data sheet (SM-82-006) for information on magnetic fields.)
Maintenanceq Clean the separator regularly. Make sure to clean it once the accu-
mulation of contaminants reaches a thickness of 20 mm or so.w Clean the adsorption surface of the separator by wiping away the
accumulated contaminants using a soft rag or the like.
Handlingq Do not bring the top surface of the separator near magnetically at-
tractive objects such as iron plates.w Handle the separators individually and do not bring them into close
proximity with each other.e Be careful not to get your fingers caught between iron plates, etc.,
when installing the separator.r Do not bring objects that are affected by magnetism (cards with
magnetic strips, watches, etc.) near the separator.
Handle-equipped type Cover/handle-equipped type
Tank-fixed type
1547
FH
HOW
FH
Series FHMade to Order Specifications:Please consult with SMC for detailed specifications, delivery and prices.
Symbol
X0Non-Standard Filtration1
Made to Order(Non-standard filtration or Micromesh element equipped)
X0Filter symbol (Refer to “How to Order” for each series)Note) Made-to-order specifications (non-standard filtration rating) are available only for micromesh
elements (element symbol: M).
3/8, 1/2
3/4, 1
1 1/4, 1 1/2
2
2 1/2, 3
3/4, 1
1 1/4, 1 1/2
2
2 1/2, 3
1/4, 3/8, 1/2
Replacement element part no.
Micromesh element(With relief valve)
—
—
—
—
—
—
—
—
—
—
ø53.1 x L90
ø73.5 x L117
ø73.5 x L195
ø87.6 x L282
ø118.7 x L280
ø65 x L95
ø73.5 x L117
ø87.6 x L157
ø118.7 x L207
ø53 x L90
Description Model Port size
EM040-∗1∗2
EM910-∗1∗2
EM140-∗1∗2
EM930-∗1∗2
EM240-∗1∗2
EM810-∗1∗2
EM910-∗1∗2
EM020-∗1∗2
EM120-∗1∗2
EM040-∗1∗2
Micromesh elementElement size
Oil filter
Return filter
Line filter
FH150(Refer to P. 1542.)
FH100(Refer to P. 1538.)
FH34FH44FH54FH64
(Refer to P. 1531.)
Note) In the table above ∗1 indicates nominal filtration and ∗2 indicates hydraulic fluid type.
Hydraulic Filter Non-Standard Filtration Replacement Element Part No.
Symbol (∗1)
003005010020040074105149270
µm 3 5 10 20 40 74105149270
Nominal FiltrationSymbol (∗2)
N
W
V
Type
Hydraulic Fluid
Petroleum
Water-glycol, Emulsion
Phosphoric ester
1548A
Series FHMicroswitch for Differential Pressure Indication Switch
(1) Contact specifications (4) Electric circuit
(5) Terminal typeSoldering terminal
Table 1 Contact specificationsSpecifications
Max. 15 A
5 VDC 160 mA
Item
Inrush current
Minimum applicable load
(3) Other performance
Table 3 Other specificationsItem
Insulation resistance
Contact resistance
Specifications
100 MΩ or more (Measured by 500 VDC, insulation resistance tester.)
30 mΩ or less
1,000 VAC 50/60 Hz 1 min
1,500 VAC 50/60 Hz 1 min
1,500 VAC 50/60 Hz 1 min
Between terminals with the same pole.
Between charged metal
part and ground
Between each terminal and
non-charged metal part
Withstand
voltage
(2) Rating
Table 2 RatingResistance load
5 A
Rated voltage
250 VAC
NC
COM
NO
(N.C. and N.O. common)
Precautions1. Connect desired wiring to the micro switch indication symbols 1 (COM.), 2
(N.C.), and 3 (N.O.).2. When a protection mechanism is required, take appropriate considerations
on the electric circuit since the micro switch is a type of non-reset.
1549
FH
HOW
FH
Design
Caution1. Do not use at a pressure that exceeds the operating
pressure range.2. Do not use at a temperature that exceeds the oper-
ating temperature range.3. Fluid
Do not use the product with gases. Do not use fluid other than hydraulic fluid.
4. Fatigue damageUnder the following conditions, special measures are required:
1. If the product will be subjected to pressure surges.
2. If the product is not mounted securely and will be subject to friction or vibrations.
5. CorrosionThe product may corrode depending on usage conditions and environment.
Selection
Warning1. When selecting products, carefully consider the us-
age purpose, the required specifications, and the usage conditions (fluid, pressure, flow rate, tem-perature, environment), and ensure that the specifi-cation range is not exceeded.
2. The fluid used must not be heated to the boiling point.
3. Do not use the product with air or other gases un-der any circumstances.
4. Do not use the product in circumstances where it will be exposed to pressure that exceeds the rated operating pressure range, such as with a water hammer or surge pressure.
Fluid
Warning1. Do not use fluid other than hydraulic fluid.
Piping
Caution1. Make sure to allow sufficient space for maintenance
when installing and piping.2. Connections
Make sure no cutting chips from pipe threads or sealing mate-rial gets inside the piping. If sealing tape is used, leave 1.5 to 2 thread ridges exposed at the end of the male thread.
3. Filter installationUse stays or the like to secure the inlet and outlet pipes so that the filter unit is not subjected to external force such as vi-bration.
Operating Environment
Caution1. If the product is used in an environment or location
conducive to corrosion, discoloration or deteriora-tion due to corrosion may occur.
2. Fatigue damage may occur if the product is used in a location subject to vibrations or impacts.
Maintenance
Caution1. The differential pressure will increase if the filter be-
comes clogged with foreign matter.The differential pressure indicator operation pressure is the pressure difference at which the element should be replaced. When the pressure difference rises to this level, replace the element with a new one. A differential pressure indicator and differential pressure indication switch are available as options.
Series FHSpecific Product PrecautionsBe sure to read this before handling.Refer to front matter 38 for Safety Instructions.