Compressed air preparation

Oiler

Festo lubricators add a defined quantity of oil to compressed air to provide continuous lubrication for pneumatic cylinders, valves, and other moving components. The MS-series lubricators MS4-LOE and MS6-LOE are designed as modules for Festo service block assemblies, while MS9-LOE and MS12-LOE cover larger nominal bores. Variants are available with fixed (R) or adjustable (U) oil metering quantity, and with or without oil level indication.

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  1. Lubricator MS4-LOE-1/4-R - Festo 529411
    €37.46

Buying guide

How to choose Oiler

What matters when choosing: properties, comparison and typical applications.

Technical features

⚙ Modular lubricators MS4/MS6/MS9/MS12 - compatible with Festo service block assemblies, common mounting plate
⚡ Port sizes G 1/8 to G 1/2 - MS4 (G 1/8, G 1/4), MS6 (G 1/4, G 3/8, G 1/2), MS9/MS12 (G flange)
✓ Metering variants - fixed (R) or adjustable (U) oil quantity to suit operating requirements
⬡ Sight glass on oil bowl - transparent bowl for oil level monitoring without disassembly
✦ For use with oil-compatible seals - only suitable for systems that tolerate or require oil lubrication of compressed air

Variants at a glance

SeriesPortMeteringNote
MS4-LOE-1/4-RG 1/4fixedStandard MS4 module
MS4-LOE-1/4-UG 1/4adjustablewith adjustment screw
MS4-LOE-1/8-RG 1/8fixedStandard MS4 module
MS6-LOE-1/2-R/UG 1/2fixed / adjustableMS6 module, large bore
MS9-LOE-G-UGadjustableflange port, MS9 system
MS12-LOE-G-UGadjustableflange port, MS12 system

Typical applications

Typical applications: Pneumatic cylinders and spool valves with metal seals requiring continuous lubrication, air motors in hand tools and manufacturing machinery, and high-cycle assembly lines where dry operation without additional lubrication would reduce actuator service life. Not suitable for oil-free and grease-free compressed air applications (e.g., food, medical, electronics).