Auto Piston 5258754 5262760 for CUMMINS ISF 3.8

Auto Piston 5258754 5262760 for CUMMINS ISF 3.8

The 102mm piston is designed for CUMMINS ISF 3.8 engine. It helps rebuild your engine. The Pistons are built as an exact fit to ISF 3.8 engine. Each piston has gone through an OE quality construction and is with an OE design. The piston has insert ring and cold oil passage. The skirt is printed graphite. The surface treatment of the piston involves various ring groove inserts and the skirt is also phosphated. The complicated and delicate producing processes promise a higher wear resistance and longer service life of the piston. Wellfar Pistons are sold in sets. The minimum order quantity is 1set.

In order to meet the above functional requirements, the outer circle of the piston is usually designed as a shaped outer circle (medium convex variable ellipse), that is, the cross section perpendicular to the piston axis is ellipse or modified ellipse, and the ellipticity varies along the axis direction according to a certain rule (as shown in Figure 1), and the accuracy of ellipticity reaches 0.005mm; the outer profile of the longitudinal section of the piston is a fitted curve of high order function, and the accuracy of profile is 0.005~0.01 In order to improve the bearing capacity of the piston to increase the lift power of the engine, the pin hole of the high-load piston is usually designed as a micro internal cone type or a positive stress surface type (shaped pin hole), with a pin hole size accuracy of IT4 and a contour accuracy of 0.003mm.

Product Specification

What is the structure combination (parts) of piston oil seal seal in hydraulic cylinder? Piston oil seal is also called piston combination oil seal, it includes the main parts such as piston and piston rod, the connection form of piston and piston rod.
First, it is a half-ring connection: the structure is more complicated, installation and disassembly is not convenient, but it works more reliably and can withstand larger loads and vibrations;
Second, thread for connection: simple structure design, easy to install and disassemble, but in our country under high pressure large load need to have a nut anti-loosening device.
Third, welding process connection: small axial size, easy to process, but inconvenient disassembly.

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