The three-jaw chuck's applications: It supports cylindrical workpieces such as shafts, tubes, sleeves, etc., aligning the workpiece's axis with the work surface of the platform for accurate positioning and marking. It serves as a measuring tool for inspection, marking, setting up instruments, and clamping during mechanical processing.vThe frame is used in conjunction with a flat plate for inspecting concentricity of various shafts and as a high leveling iron for marking and assembly.

The features of the three-way iron are:: Generally supplied in pairs, it is a tetrahedron with four working surfaces or four different sizes.90Degree slots.

Three-port iron fittingJB/T8047-95Standard manufacturing, also known as three-holeVType frame or three-wayVMold iron. Used   HT200-250Material, supplied in pairs, primarily used for inspection, marking, alignment, and fixture in mechanical processing of shaft components.

Three-port iron accuracy: Divided into1Grade2Grade3Grade

Three-hole iron is primarily used to place shafts, sleeves, discs, and other circular workpieces, for the purpose of locating the centerline and marking it. GenerallyVEach type of frame comes in pairs, with the two pieces having flat surfaces.VThe mold slots are milled in a single installation.VThe parallelism and perpendicularity errors between the surfaces of the frame dimensions are0.01Within millimetersVThe centerline of the slot isVThe symmetrical plane of the frame is parallel to the base, with concentricity and parallelism tolerances also maintained.0.01Within millimeters.VType groove semi-angle error is±30~±1Within range.VThe frame can also be marked, with a holding bow frame.VType frame, for securely holding cylindrical workpiecesVOn the mold rack, flip to mark lines at various positions.

Parameters related to parallelism for the commonly used specifications of three-port iron: