ISO-Standard LF Inline Hydraulic Filter

Ayater's LF inline hydraulic filters are constructed with high-grade aluminium for both the filter head and bowl, striking the perfect balance between structural strength and lightweight design-critical for hydraulic system weight optimization without compromising pressure resistance. The housing is designed to withstand a nominal pressure of 100 bar and a fatigue strength of 10⁶ cycles from 0 to nominal pressure, ensuring longevity in continuous industrial operation. All housings include precision-machined mounting holes for secure installation and a clogging indicator port as standard, with a pressure relief drain screw integrated into LF 330 and larger models to streamline maintenance and pressure release. A key safety requirement is proper earthing of the filter housing, and electrical clogging indicator disconnection requires full system power-off to prevent short circuits and electrical damage.

The standard clogging indicator for the LF series is the VM differential pressure type, capable of operating up to 210 bar and set to 5 bar as standard (8 bar for LFF models, custom settings available). The indicator is available in visual, electrical, or combined visual-electrical (Type D) variants, with steel or plastic blanking plugs for unused indicator ports. Electrical indicators can be integrated with system control panels for continuous clogging monitoring, with LED light options (24V, 48V, 110V, 220V) for clear status visibility. The VM indicator has a maximum torque specification of 33 Nm during installation to prevent damage to the indicator or filter head threads. An optional bypass valve is built into the filter head, separate from the main flow, with a standard 6 bar cracking pressure-this valve allows partial fluid flow past the element during cold starts or sudden clogging, protecting the hydraulic system from pressure spikes and component damage.

Replacement elements for the LF series follow a standardized coding system for easy identification and ordering, with sizes matching the filter model (0030 for LF 30, 0060 for LF/LFF 60, up to 0660 for LF 660). The filtration rating varies by element material: Optimicron® (ON) elements offer the finest filtration (1-20 µm), while wire mesh (W) elements are designed for coarse filtration (25-200 µm). High-pressure elements (BH4HC, OH/PS, V) are rated for 210 bar, making them the mandatory choice for systems without a bypass valve operating above 20 bar. Element replacement follows strict cleanliness protocols-all components must be cleaned, and sealing surfaces inspected for damage to prevent leakage and contamination. Only W and V elements are cleanable; all other elements must be disposed of in accordance with environmental regulations.

Replacement elements for the LF series follow a standardized coding system for easy identification and ordering, with sizes matching the filter model (0030 for LF 30, 0060 for LF/LFF 60, up to 0660 for LF 660). The filtration rating varies by element material: Optimicron® (ON) elements offer the finest filtration (1-20 µm), while wire mesh (W) elements are designed for coarse filtration (25-200 µm). High-pressure elements (BH4HC, OH/PS, V) are rated for 210 bar, making them the mandatory choice for systems without a bypass valve operating above 20 bar. Element replacement follows strict cleanliness protocols-all components must be cleaned, and sealing surfaces inspected for damage to prevent leakage and contamination. Only W and V elements are cleanable; all other elements must be disposed of in accordance with environmental regulations.