Patent ID: 8037667

Claim:
An agricultural harvesting machine, comprising: a feeder housing; a corn head having a frame attached to said feeder housing, said corn head including a common drive shaft, a plurality of row units each having a pair of stalk rolls, and a gearcase having a pair of gearcase extensions with cantilevered drive shafts extending therefrom; each stalk roll comprising an elongated generally cylindrical hollow body having a longitudinal axis of rotation, an inner surface extending the length of the stalk roll, a rear end receiving a corresponding one of the gearcase extensions and the stalk roll drive shaft extending from the gearcase extension, and a front end for receiving a threaded fastener, the inner surface defining a conical seat that opens toward said rear end and a spherical seat opening toward said front end; and a threaded fastener for each stalk roll having a threaded bore, and a spherical surface portion engaging the corresponding stalk roll spherical seat.