An Expanding Nut Adaptor is a compact internal workholding device that grips components from the inside diameter by uniform radial expansion. It provides strong, concentric, and distortion-free holding, making it ideal for machining, grinding, inspection, and balancing operations—especially for thin-wall, short-length, or small-bore components where external clamping is not feasible.
An Expanding Nut Adaptor is a compact internal clamping device used to hold components securely from the inside diameter (ID) by radial expansion.
When tightened, the adaptor expands uniformly inside the bore, providing strong, concentric, and distortion-free holding—ideal for machining, grinding, inspection, and balancing operations.
It is especially effective for thin-wall, short-length, or small-bore components where external clamping is not feasible.
Applications
Expanding Nut Adaptors are commonly used in:
Key Features
Working Principle
The adaptor consists of an expanding sleeve/segments actuated by a tapered screw or nut.
As the nut is tightened, axial force converts into radial expansion, gripping the bore evenly without marking or ovality.
Technical Specifications
Advantages
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