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TAISEI Filter Element / TAISEI Filter
1 Product Overview
TAISEI KOGYO is a well-known Japanese hydraulic filtration manufacturer. The complete system includes hydraulic filter housings and matched pleated filter elements.Fluid flows through filter elements inside the housing to capture metal wear debris, rubber particles and solid contaminants, steadily maintaining system oil cleanliness and protecting hydraulic pumps, valve manifolds, cylinders and precision components.We supply fully interchangeable replacement filter elements and complete filter housings. Multiple media including paper, glass fiber, stainless steel mesh and notch wire are available, covering suction line, pressure line, return line and offline bypass filtration. Widely adopted for localization retrofitting of imported equipment and OEM supporting.
Classification Reminder
TAISEI Filter Element / TAISEI Filter: Japanese standard hydraulic filter element & housing, for in-line filtration and localization replacement on injection molding & die casting machinery.
LUC Filter Trolley: Basic single-barrel mobile oil filter cart for offline bypass circulation.
SLUC Double-barrel Oil Filter Cart: Dual-barrel serial filter cart with larger dirt holding capacity.
OUF10 Series Portable Oil Filter Trolley: Large-flow portable cart as domestic alternative to OFU10.
PFC Series Oil Purifier: Standard precision mobile oil filter unit.
High Solid Content Oil Purifier: Heavy-duty filter for heavy sludge overhaul conditions.
Ultra-precision Oil Purifier: Submicron polishing unit reaching NAS 3～6 cleanliness.
Coalescence Dehydration Oil Purifier: Coalescing filter with oil-water separation performance.
Plate and Frame Oil Filter: Plate-frame bulk pre-filter using filter paper.
Vacuum Oil Purifier: Vacuum oil purifier for deep water removal, degassing and demulsification.
2 Main Types & Structure
Main Filter Housing Series
Suction filter: VN, VM, SFN, SFT series (tank-mounted to protect hydraulic pump)
Pressure line filter: UL, UM, UH, GF, 350, 351 series (protect valves under working pressure)
Return line filter: LND, TL, TM series
Off-line bypass filter: matched with mobile filter trolley
Filter Element Media Code
U: Paper media, economical, 10/20μm for general service
C / CH: Composite glass fiber media, high precision 3～10μm for fine filtration
W / UW: Stainless steel woven mesh, washable & reusable
K / UK: Notch wire element, high flow, impact resistant, easy cleaning
Single Filter Element Structure
Inner & outer protective support cage
Multi-layer gradient pleated media
Anti-corrosion end caps
Integrated sealing gasket
Positioning pressure-bearing structure matching original housing
Complete Filter Assembly
Housing, filter vessel, filter element, bypass valve, differential pressure indicator, port connections, mounting base
3 Working Principle
Hydraulic fluid enters filter housing and flows inside-out through filter media. Large particles are trapped by outer layers, fine particles captured by inner fine media.Clean fluid flows downstream into hydraulic circuit. Differential pressure rises gradually as contaminants accumulate.Optional visual indicator or electric DP switch triggers clogging alarm. Built-in bypass valve opens automatically when element is fully blocked to avoid circuit shutdown.
Note: Standard elements only remove solid particles. Water-absorbing adsorption elements are optional for free water removal. No demulsification capability; coalescing oil purifier is required for heavily emulsified oil.
4 Basic Technical Parameters
Compatible Brand: TAISEI KOGYOMain Element Series: P-F series, 350 series, VN series, UL/UM/UH seriesFiltration Rating: 3μm,5μm,10μm,20μm,25μm,50μm,100μm,200μmMedia Selection: Paper / Glass Fiber / Stainless Steel Mesh / Notch WireWorking Fluid: Mineral hydraulic oil, lubricating oil, water-glycol, phosphate ester fire-resistant fluidOperating Temperature: -20℃～90℃Standard Seal: NBR; Optional FKM fluororubberHousing Pressure Rating: Suction filter: negative pressure ~0.5MPa; Pressure line filter max.3.5MPaOutput Cleanliness: Glass fiber version stably achieves NAS Class 6～9
5 Core Advantages
Strictly copy original dimension, thread and sealing position for direct interchange without equipment modification.
Diverse media options including disposable economical type and reusable metal elements for different budget and working conditions.
Multi-gradient filter media with high dirt holding capacity to extend service interval and reduce downtime.
Smooth machined sealing surface ensures stable pressure resistance and prevents particle bypass.
Supply filter elements separately or complete filter assemblies to satisfy maintenance replacement and OEM demand.
Wide selection of DP indicators, bypass valves, threaded & flange connections fully compatible with original installation forms.
Ideal for localization cost reduction on Japanese injection molding, die casting, forging, wind power and metallurgy equipment.
Custom non-standard elements and filter assemblies for high temperature and special media available.
6 Installation & Maintenance Specification
Filters can be mounted horizontally or vertically; fluid flow direction must follow housing marking.Regularly monitor DP indicator. Replace element once differential pressure reaches rated value.Shut down and release pressure before element replacement. Clean internal contaminants and inspect O-rings.Stainless steel mesh & notch wire elements can be reused after cleaning without damage; glass fiber and paper elements are disposable, not washable.Fully flush filter housing before switching different oil types to avoid cross contamination.
7 Common Faults & Solutions
Fast DP rise, element clogging quicklyCauses: severe initial system contamination; excessive water & sediment; over-fine element selectedSolutions: install pre-filter; shorten replacement interval; select proper filtration rating
Poor filtration efficiency, cleanliness fails targetCauses: improper installation leading to bypass leakage; damaged element; insufficient accuracySolutions: reinstall element; replace new element; upgrade higher precision glass fiber element
Oil leakage at housing cover and portsCauses: aged damaged sealing rings; uneven bolt tightening torqueSolutions: fit new gaskets; tighten bolts evenly diagonally
Frequent bypass valve activationCauses: heavily clogged element; flow exceeding filter rated capacitySolutions: replace element timely; select larger-size filter assembly
8 Standard Supply List & Optional Accessories
Filter Element Supply
Filter element, inner support cage, O-ring set, nameplate, inspection certificate
Complete Filter Assembly Supply
Aluminum housing, filter element, built-in bypass valve, DP indicator, port fittings, sealing kit
Optional Accessories
Electric differential pressure alarm switch, anti-corrosion coated housing, FKM sealing kit, extended connecting pipe, flange adapters, matched mobile filter trolley set
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