Wärtsilä Hydraulic Equipment

Shaft couplings, propeller nuts and shaft flange bolts designed for easy handling and trouble free operation

Wärtsilä hydraulic equipment includes varieties of shaft couplings, propeller nuts and shaft flange bolts.

Hydraulic couplings provide a simple and quick way to connect shafts, eliminating the need for keyways, tapers or thrust rings.

The hydraulic shaft coupling range consists of four design types: OHSM, OHSM-B and OHSM-V are flange couplings and connect a shaft to a gearbox, engine or another shaft. OHSN couplings are designed to connect two standard shafts.


    Commercial oil lubricated hydraulic shaft couplings

    Shaft sizes ø100 to ø700 mm (depending on model and application)
    Lengths To suit application
    Operating temperature Up to 100° C
    Material Alloy and carbon steel
    Optional extras Manual pump, pneumatic pumps, protective casing

    Commercial oil lubricated hydraulic nuts

    Wärtsilä hydraulic nuts are for heavy equipment installation. Manufactured from high quality materials, the nuts are designed for use as both an installation tool and a permanent nut. The fitting process is controlled by means of a hydraulic procedure. The process is clean, quick and trouble free with the simple use of one set of hydraulic equipment.

    Sizes Up to ø700 mm
    Optional extras To suit application
    Optional extras Hydraulic pumps and fittings

    Commercial oil lubricated hydraulic bolts

    Wärtsilä hydraulic bolts are designed to ensure the easy connection of flanges while still being able to meet the requirements of high torque transmission.
    The high quality bolts keep the connections rigid under extreme operating condition. They are easy to install and remove as well as reusable.

    Sizes ø40 mm to ø146 mm
    Lengths To suit application
    Optional extras Hydraulic pumps and fittings

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