Importance

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Abstract

A fluid-powered rotary actuator having a body with first and second ends, and a shaft extending generally coaxially within the body. The shaft is supported for rotational movement relative to the body by bearing races formed on the shaft first and second end portions and corresponding bearing races formed on a pair of first and second end caps. First and second stop rings are disposed within the body, each adjacent to a corresponding end cap, with the shaft extending therethrough. The stop rings are each freely and longitudinally movable on the shaft within a limited axial range. The stop rings are positioned using set screws which extend through the end caps and engage the stop rings at selected longitudinal positions within their limited axial ranges. When the first and second stop rings are positioned, they engage and limit axial travel of the piston sleeve toward the end caps, and hence provide preselected and adjustable and rotational limits for the rotational travel of the shaft.

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First Claim