Master, I want to make a set of hydraulic equipment for hydraulic piston and cylinder head with us how to adjust the tolerances. (H refers to the tolerance zone of the hole, f refers to the tolerance zone of the shaft, right? What does H7F8 mean?) I do not understand these written knowledge, it is best to say that the size of the piston head and cylinder bore how to fit, and can take specific figures for example, the best, the more detailed the better. To install the piston ring high speed heating will do, how to solve it, large caliber and long trip for us.
3, if not the special equipment, hydraulic system piston will not have high speed movement, it is by slow extrusion oil, and obtain greater impetus. But internal combustion engines are exceptional.4, the hydraulic system and the force is proportional to the size of the bore, the good solution. However, long stroke (such as ten meters) to consider the rod out of such a long deflection problem, is a key consideration.
2, the piston head and cylinder matching, in operation is to rely on oil sealing ring to seal the cylinder cavity.
1, GB standard: hole tolerance class with uppercase English letters, shaft tolerance class with lower case English letters, H7/f8 refers to the hole and shaft tolerance zone, but the specific tolerance depends on the size of the section, can be examined.
