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[CN 201780049520.3] Roller piston for hydraulic press formed as a centering element limiting friction with rollers is integrally formed
[CN 201780049520.3] Integrally forming a roller piston for a hydraulic press formed as a centering element that limits friction with the roller Title: Integrally forming a centering element that limits friction with the roller Roller piston for a hydraulic press Application number: CN 201780049520.3 Applicant: Pokran Hydraulic Industrial Equipment Company Application date: 2017-6-15 Patent type: the present invention relates to a piston (1) with a roller (120), which is designed to receive the roller (120) and slide in a cylinder (2) along a sliding axis (C-C). The piston (1) comprises:-a main body (112) with a guide surface (111);-an upper part (110a), it has a bracket-like recess (112) coinciding with the rolling axis (R-R'), which recess is designed to receive the roller (120), the bracket (112) is of the divergent edge type, I .e. it ends at less than 180 ° with respect to the rolling axis (R-R');-at least one centering element (130) formed as an axial stop for the roller (120), and configured to keep the roller (120) axially centered in the carrier (112) with respect to the rolling axis (R-R'); the piston (1) is characterized by: the main body (110), the at least one centering element (130) and the upper part are composed of a single unique integral part, and the centering element (130) has a suitable shape or suggested means for limiting the contact surface with the roller.
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