Patent ID: 9163658
Filing Date: 2015-10-20
Classification: F16C,Y10T

Abstract:
1. A part for a crankshaft of an internal combustion engine or a compressor, comprising two portions: a single throw main journal and a crank pin, wherein the crank pin extends out perpendicularly to the single throw main journal, the axis of the crank pin is offset relative to the axis of the single throw main journal, the front end of the crank pin is tapered, at least one first positioning semi-hole is provided on a conical surface of the tapered end, starting from a small diameter end or a large diameter end, the at least one first positioning semi-hole matches with a second positioning semi-hole on a crank which is operated in combination with the part to form a complete positioning pin hole; said part is structured as a single throw; wherein a first crank arm for connecting the single throw main journal and the crank pin is provided there between; and the first crank arm is coaxial with the single throw main journal and has a diameter larger than that of the single throw main journal, a ring groove is provided at a projection portion in the direction towards the outer end face of the single throw main journal, an outer rabbet of the ring groove is under cut, the ring groove is structured as oil slinger; an oil passage is provided at the bottom of the ring groove and extends from the inside of the crank pin to an oil orifice of the surface of the crank pin.