Rotork assists BAE Systems in naval base actuator upgrades

Rotork has been working with BAE Systems to improve a series of A-range actuators to IQ3 actuators which function penstocks controlling motion of ships between the ocean and transitional locks and dry docks at Her Majesty’s Naval Base Portsmouth (HMNB Portsmouth).
A series of A-range actuators had reached the tip of their operational life after lengthy service in a difficult environment. Efficient wanted to retain all the advantages of electrical actuators, so IQ3 actuators had been chosen. These had to be specially tailored by Rotork to overcome problems around confined spaces and tough access.
IQ3 actuators and IS gearboxes have been mechanically adapted in order that both actuator and gearbox could possibly be manually operated without getting into the confined space. Rotork designed special hand auto levers and thru drive mechanisms for the actuator and gearbox to get rid of the need for confined area entry.
Actuators throughout the IQ range are watertight, offering ingress protection to IP66/68 at 20 m for 10 days. They have a complicated dual stacked display with configurable information logger performance, and an absolute place sensor supplies reliability and accuracy.
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