The rear guide rail of the cutter head of the hydraulic brake shear is supported by 4 large bearings. The front rail is compressed by two bearings with compression springs on the back. Thereby, there is no gap between the front and rear rails. Accuracy error of the added motion gap and blade gap is kept below 0.04mm. Therefore, the sheared material is smoother without burrs. <br>The knife holder moves vertically and linearly with respect to the lower blade to ensure that the shearing sheet has less distortion. The straightness is more precise. <br>Because the cylinder, blade holder and blade are in the same straight line and move perpendicular to the lower blade, it is not easy to deform.
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