Return Filter Series FH Selection of elements for different applications Depending on the application, the user can choose among several standard element types, paper elements (, and µm) and micromesh elements (7 and µm). Easy maintenance The element slides into place and is sealed with an O-ring, making it easy to install and remove. Large drain exhaust outlet The large M6 drain exhaust outlet assures rapid drainage. logging sensor The filter can be fitted with a differential pressure indicator (two-stage indicator, reset type) or differential pressure (visual combined, non-reset type). Specifications Fluid Operating pressure Operating temperature over Hydraulic fluid Max. MPa Max. 8 ast iron Main material ase O-ring Seal Aluminum-cast NBR or FKM Note) Stainless steel & NBR or Stainless steel & FKM Note) Material Paper Micromesh Nominal filtration,, µm 7, µm (, mesh) Differential pressure resistance Differential pressure indicator operating pressure Relief valve open pressure.6 MPa. MPa. MPa Note) The material of the O-rings differs depending on the hydraulic fluid used. Petroleum, Water-glycol, Emulsion: NBR; : FKM /Rated Flow Rate FH-6 FH-8 FH- FH- FH-6 FH- FH- Port size (Rc) / / / / Rated flow rate (l/min) Paper Micromesh 8 6 6 6 6 7 Accessory/Option Description Part no. Note Differential pressure indicator B-H Petroleum, Water-glycol, Emulsion B-H-V Differential pressure (N.. and N.O. common) Blanking cap (for differential pressure indication part) B-H B-H-V AG-H AG-H-W AG-H-V Petroleum, Water-glycol, Emulsion Petroleum Water-glycol, Emulsion
Series FH Port size (Rc) 6 8 6 Hydraulic filter Operating pressure B Max. MPa onstruction/onnection downward removal, threaded / / / / FH 6 P Differential pressure indication None Differential pressure indicator Differential pressure Note) Note) N.. and N.O. common How to Order Relief valve With relief valve None Hydraulic fluid P M 7 Nil None X Non-standard filtration Note) The non-standard filtration is for micromesh elements only. Refer to page for details. Nominal filtration µm µm µm 7 µm µm Note) The paper elements for water-glycol or emulsion is µm only. Paper Micromesh Petroleum Water-glycol, Emulsion Made to Order Replacement Part No. (including O-ring for element) FH-6 FH-8 FH- FH- FH-6 FH- FH- µm EP-N EP-N EP-N EP-N EP-N EP6-N EP6-N Paper µm EP-N EP-N EP-N EP-N EP-N EP6-N EP6-N µm EP-N EP-N EP-N EP-N EP-N EP6-N EP6-N 7 µm ( mesh) EM8-7N EM8-7N EM9-7N EM9-7N EM-7N EM-7N EM-7N Micromesh Note ) The symbol at the end of the element part no. indicates the hydraulic fluid type. N: Petroleum, V:, W: Water-glycol, Emulsion ( µm only for paper) Note ) Refer to page for non-standard filtration. Note ) Above elements require one element per filter. µm ( mesh) EM8-N EM8-N EM9-N EM9-N EM-N EM-N EM-N size ø6 x 9 ø7 x 7 ø88 x 8 ø9 x 8 onstruction/seal List Blanking cap Relief valve q O-ring w O-ring e Seal washer Drain plug DRAIN Differential pressure indicator over OUT ase Differential pressure Differential pressure Replacement Seal List (One each of the seal and O-ring types listed below are required per filter.) No. Descrip- tion Hydraulic fluid type 6 8 Petroleum, FH- Emulsion, 6 Water-glycol AN6-7 NBR/Hs = 7 6 8 -D-G9 Phosphoric FH- ester 6 O-ring for cover case JIS B -A-G9 JIS B -A-G JIS B -A-P JIS B -A-P JIS B -A-P JIS B -A-P8 JIS B -D-P JIS B JIS B -D-G AN6-7 FPM/Hs = 7 O-ring for element JIS B -D-P JIS B -D-P JIS B -D-P8 Seal washer Standard Standard Part no. SM-6 SM-6-V
Return Filter Series FH Flow haracteristics FH-6 to : Nominal filtration µm Pressure drop (MPa)..... 6 6 8. Flow rate (l/min) onditions Fluid: Turbine oil lass VG6 Measured pressure: MPa Viscosity: mm /s Filter material: Paper Nominal filtration: µm FH-6 to : Nominal filtration 7 µm Pressure drop (MPa)..... 6 8 6 Differential Pressure Indication Two indication methods are available: differential pressure indicator and differential pressure. These can be mounted on all filter models. Differential pressure indicator Operating pressure. MPa Once a value is displayed, it will continue to be displayed until reset, even if the pump is stopped. (-stage display reset type) Perform element replacement when the red ring floats up and covers the entire view port. Reset button View port Differential pressure Operating pressure. MPa 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 -stage display. Perform element replacement when the switch has actuated (when the red ring floats up and covers the entire view point). N.. and N.O. common OM. N.O. N.. View port G/ Handling Precautions q Mounting onfirm and OUT before mounting. Then connect so that the drain is oriented downward. 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 whether it is from clogging or not after normal operation starts. Once the differential pressure indicator is actuated, the indication continues to be displayed until the indicator is reset (by depressing the reset 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 incorporated into the sequence circuit of the machine, make sure to design the system so the filter clogged signal does not operate until normal operation starts. e replacement When the pressure difference reaches. MPa during filter operation (actuating the differential pressure indicator), stop operation, drain the oil from the case, and replace the paper 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.. Flow rate (l/min) onditions Fluid: Turbine oil lass VG6 Measured pressure: MPa Viscosity: mm /s Filter material: Micromesh Nominal filtration: 7 µm Microswitch Rating Non-inductive load (A) Inductive load (A) Rated Resistance load Light load Inductive load Motor load voltage (V) Normally Normally Normally Normally Normally Normally Normally Normally closed open closed open closed open closed open A A D8 D D D D....7.........8.. Precautions. The figures in the above table indicate stationary current.. An inductive load has a power factor (A) of.7 or more, and a time constant (D) of 7 msec or less.. A light load has an inrush current times greater.. Lead wires are connected using a screw tightening terminal.. The electrical entry is equipped with a conduit (G/) and grommet. 6. Please wire freely to the microswitch indication symbol (OM.), (N..) and (N.O.). 7. If a holding mechanism is necessary for the nonreset type, provide it using electric circuits.
Series FH Dimensions Differential pressure øf Differential pressure indicator 6 A Blanking cap x Rc (d) () (6) OUT- OUT- E ( removal dimension) øb OUT- D Differential pressure indicator Differential pressure DRAIN FH-6 FH-8 FH- FH- FH-6 FH- FH- d A B / 9 / / 8 / 7 D E 6 9 8 99 7 87 F 7 (mm) Weight (kg).. 6.8 7.
Series FH Made to Order (Non-Standard Filtration) Please contact SM for detailed specifications, lead times and prices. How to Order Filter 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). X Made to Order (Non-standard filtration) Hydraulic Filter Non-Standard Filtration Replacement Part No. Replacement element part no. Description Port size Micromesh element Micromesh element (With relief valve) size / EMH-* * ø6 x l9 /, EMH-* * ø8 x l Vertical suction filter FHIA (Refer to P..) /, / EMH-* * EMH-* * ø x l6 ø x l8 /, EMH-* * ø x l /, EMH-* * ø8 x l6 /, / EM-* * EM-* * ø6 x l9, / EM-* * EM6-* * ø8 x l Suction filter with case FH99 (Refer to P. 7.) / / EM-* * EM-* * EM6-* * EM7-* * EM8-* * EM9-* * ø x l77 ø x l77 ø x l EM7-* * EM-* * ø x l /, EM8-* * EM-* * ø x l9 Suction guard FHG (Refer to P..) /, /, /, /, /, EM-* * EM-* * EM-* * ø69 x l88 ø89 x l ø9 x l88 Line filter FH FH FH FH6 (Refer to P..) /8, / /, /, / /, EM-* * EM9-* * EM-* * EM9-* * EM-* * ø. x l9 ø7. x l7 ø7. x l9 ø87.6 x l8 ø8.7 x l8 Vertical return filter FHBA (Refer to P. 9.) / / / EM6H-* * EM7H-* * EM8H-* * ø6 x l8 ø76 x l9 ø76 x l9 /, EM8-* * ø6 x l9 Return filter FH (Refer to P..) /, / EM9-* * EM-* * ø7. x l7 ø87.6 x l7 /, EM-* * ø8.7 x l7 Oil filter FH (Refer to P. 6.) /, /8, / EM-* * ø x l9 Note) In the table above indicates nominal filtration and indicates hydraulic fluid type. Nominal Filtration Symbol ( ) 7 9 7 µm 7 9 7 Hydraulic Fluid Symbol ( ) N W V Type Petroleum Water-glycol, Emulsion