Hydraulic Filters for Construction Equipment: Return, Suction & Pressure Filters

Hydraulic Filter Elements, Return Filters, Pressure Filters, Suction Filters and Line Filters

• Hydraulic filter elements: replaceable filter inserts for existing filter housings
• Return filters: filter oil returning to the tank and reduce contamination in the reservoir
• Pressure filters: operate in the high-pressure circuit and protect downstream components
• Suction filters: installed on the intake side to protect the hydraulic pump from coarse contamination
• Line filters: filter units for defined positions within hydraulic lines
• Filler and breather filters: prevent contamination through tank openings and air exchange

The installation position defines the filter type. Return, pressure and suction filters perform different functions and are not interchangeable.

Selecting Hydraulic Filters by Reference Number, Installation Position and Design

Hydraulic filters are identified and selected by reference number, installation position and filter design within the system.

Visually similar filters may differ in dimensions, sealing, filtration rating or pressure resistance and are not necessarily compatible.

Return, Pressure and Suction Filtration in Hydraulic Systems

Return filters clean oil before it re-enters the tank. Pressure filters protect components in the high-pressure circuit. Suction filters operate upstream of the pump on the intake side.

The combination of filter stages depends on the system design of the machine.

Offline Filtration, Accessories and Tank Environment

For extended oil cleanliness, offline filtration systems are used. These systems filter hydraulic oil independently of the main circuit.

The system environment also includes components from the hydraulic filter accessories range, such as sight glasses, service indicators and filter heads for monitoring and maintaining hydraulic systems.

Key Selection Criteria for Hydraulic Filters

• Reference number: exact identification of the filter
• Installation position: return line, pressure line, suction side or inline
• Design: filter element, complete filter or housing system
• Filtration task: main flow, tank environment or offline filtration
• Application: machine, system or hydraulic setup

Before Ordering

• Reference number of the installed filter
• Installation position: return, suction, pressure or line
• Filter design: element, complete filter or system
• Filtration function: main flow, tank or offline filtration
• Installation setup and existing filter configuration

System Context

Hydraulic filters are part of the filters for construction equipment category and operate within the hydraulic circuit. They differ from air filters for intake air, oil filters for lubrication systems and fuel filters for fuel systems.

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