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linear actuators

2.2.10.Rolaram

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Actuator Installation and Maintenance Tips2.2.10.1.Mounting

There are two possible ways of mounting the Rolaram actuator at the gearbox end. By means of bearing journals for trunnion mountingor clevis mount.

2.2.10.1.1.Rear Clevis

•Mount the actuator by attaching the desired bracket and pin to the clevis end.•Verify that the ram attachment is aligned throughout the actuator stroke before connecting the ram. The ramattachment will either be pinned or bolted in place depending on chosen model.

2.2.10.1.2.Trunnion Mount

•Mount the actuator by attaching the desired bearings (or mounting feet) to the trunnion pins.•Verify that the ram attachment is aligned throughout the actuator stroke before connecting the ram. The ramattachment will either be pinned or bolted in place depending on chosen model. Important Note:Always ensure that clevis holes align correctly and that they allow for the correct angle of pivoting forthe application before operating the actuator.Important Note:Side loads on the actuator ram should be avoided by ensuring that the load is guided. The load guidemechanism should resist the torque developed at the ram by the screw mechanism. A guided ram canbe supplied on request, which utilises a keyway in the inner ram, eliminates the need for torsionalrestraint and therefore allows flexibility in the choice of end fitting. The desired mounting orientation will be determined when placing the order; this orientation must be maintained atinstallation.

2.2.10.2.Lubrication of Rolaram

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Actuator2.2.10.2.1.Lubrication of the Lifting Nut

Lubricate the SPIRACON-nut or ball-nut assembly and the bearing housing by the corresponding lubricating points.With the SPIRACON-nut or ball-nut assembly in the correct position, the lubrication point is accessible through the access plug on theouter tube. Lubrication interval: Every 6 months Standard grease type: Lifting-nut assembly:ROCOL MTS 1000Bearing housing:Mobilgrease HP 222 Important Note:The SPIRACON-nut assembly may only be readjusted by Power Jacks.

2.2.10.2.2.Lubrication of the Gearbox

Inspection interval: The oil level of the gear-box must be checked every 3 months and, if necessary, oil must betopped up. Oil change interval: After two years or 10,000 operating hours. Standard oil: Mineral oil Shell OMALA 220.

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section two