油压无键连接是一种过盈连接。目前常见的过盈连接有热装、冷装、楔环、压装、胶粘等方法。热装、冷装需要一套加热和制冷设备,而且拆卸困难。压装需要吨位较大的压力机,装拆过程中不可避免地会损伤配合表面。楔环有较大的径向尺寸,在轮毂内腔上要留足必要的孔腔尺寸,因而受到一定的限制,拆卸也费时费力。胶粘过盈连接传递的扭矩不可过大。油压无键连接依靠高压油路的高压,在紧密配合的两光洁度很高的配合面间造成涨开的 Hydraulic keyless connection is an interference connection. At present, the common interference fit hot, cold, wedge ring, press fit, adhesive and other methods. Hot equipment, cold equipment needs a heating and cooling equipment, but also difficult to disassemble. Pressing requires a larger tonnage press, the process of assembly and disassembly will inevitably damage the mating surface. Wedge ring has a larger radial size, in the hub cavity to leave the necessary cavity size, which is subject to certain restrictions, the removal is also time-consuming and laborious. The torque delivered by the adhesive interference connection must not be excessive. Oil-free keyless connection relies on the high-pressure high-pressure oil, resulting in the close coordination between the two finish with a high finish up