WHEEL HUB FOR AN AGRICULTURAL OR WORK VEHICLE

Wheel hub (H) for an agricultural or work vehicle comprising a fixed bell (BL) defining a development axis (X), within which a spindle (SH) is coaxially associated in a rotatable way, which abuts externally from the bell by means of a flange (FL) arranged for being coupled to a relative vehicle wheel, inside the hub being defined in succession a first chamber (S1) for containing oil, a second dry chamber (S2) and a third chamber (S3) for containment grease, wherein the bell comprises a passing through opening (VI) at said second chamber (S2), and wherein said spindle (SH) comprises a passing through duct (CK) between said flange (FL) and said second chamber, in such a way to connect the first opening with a pressure adjustment circuit and said through duct with a relating vehicle wheel.