Text version of the page

MAHLEIndustrial Filters Hydraulic and lubricating circuits Hydraulic liquids

Mineral oils, native oils and synthetic hydraulic fluids10 Flame-retardant and lubricants12 Purity classification of the purity of hydraulic fluids14 Filter fineness depending on the contamination class16 Critical points and tolerances for hydraulic components18

Filter concept

Equipment components20 Suction filter22 Pressure filter24 Return line filter26 Bypass filter28 Pressure loss on hydraulic filters30 Air breathers31

Turbidity sensor and coalescer filter Test standards for filter elements and filter capacity

Bubble-point test (ISO 2942)34 Collapse pressure/burst pressure test (ISO 2941)34 Determining the initial differential pressure (ISO 3968)35 Multipass test (ISO 16889)36

Operation and service

Operating rules38 Oil sampling 40 Oil test42 Service recommendations44

Appendix

Institutions and industry associations45 Standards index46 Glossary50 46 32
3