Servoactuators linear actuation product

The Moog hydraulic double-ended servoactuator is an electrohydraulic linear actuator for test systems, built by Moog to move loads in controlled strokes under servo control. The product page belongs to Moog's industrial actuation range and describes servoactuators used in automotive, structural, fatigue and vibration testing as well as in motion systems with one or several axes.

A distinguishing design feature is the use of oil-cooled polymer bearings. According to Moog, these give the actuator a higher side-load capacity than other actuation technologies, which is relevant when a test fixture introduces off-axis forces. The actuators are fatigue rated and are described as a building block that can be configured for different test rigs.

The standard range has eight force ratings from 15 kN to 1000 kN and four working stroke lengths from 100 mm to 500 mm. The listed models are C086A73 (15 kN), C086A74 (25 kN), C086A75 (50 kN), C086A76 (100 kN), C086A77 (150 kN), C086A79 (250 kN), C086A7A (500 kN) and C086A7B (1000 kN). The 15 kN and 25 kN models are offered with strokes of 100, 150 and 250 mm, while the higher ratings are also available with a 500 mm stroke. Cushion length at the end of stroke is 20 mm up to 250 kN and 12 mm for the two largest models. Rod diameters run from 45 mm to 160 mm, bore diameters from 57 mm to 300 mm, and piston areas from 9.6 square cm to 506 square cm.

Moog states that the actuators are available with extensive options and that its experience with electrohydraulic servo control extends from primary flight control actuators to gap control actuators in steel mills. In an aerospace context the products on this page serve ground test equipment, for example fatigue testing of airframe structures, rather than flight hardware.

Applications named on the page include automotive durability testing, rolling stock structural testing, aerospace fatigue testing, structural testing packages and vibration testing.