Rotor for reaction rotary oil filter

Claim 1

A rotor for a rotary reaction oil filter comprising an upper casing having an upper annular bearing at an axial portion of said rotor and an upper skirt, a lower casing having a lower annular bearing at an axial portion of said rotor, downwardly projected portions at the bottom thereof, and a lower skirt, said lower casing having two oil ejection holes disposed above said downwardly projected portions and a sludge receiver formed with a central opening communicating with said holes and a saucer-like recession, said sludge receiver being securely fixed to an inner face of said lower casing above said ejection holes, said upper skirt and said lower skirt being joined in curled up lapped relation and fastened together, said lower annular bearing being larger in iNner diameter than said upper annular bearing to satisfy the formula: d2 square root 4W/ pi P) + ds1 (1 + OR - K) wherein: d1 is inner diameter of the upper annular bearing, d2 is inner diameter of the lower annular bearing, P is oil pressure in the rotor, W is a sum of weight of the rotor and oil in the rotor, K is correction value defined within the range of -0.08 K +0.08, said upper and lower casings having central openings, said annular bearings disposed in said central openings and comprise annular rings with U-shaped plates covering said rings caulking said central openings of said upper and lower casings.