Abstract: A multi-stage harvest dryer (10) is provided for drying an agricultural harvest product (12), such as, for example, corn, sunflowers, beans, seeds, etc. The dryer (10) includes multiple drying stages (14a-14d) connected in sequence to dry a volume of harvest product (12) passed from one drying stage (14) to the next. Heat exchangers (16a, 16b, 18a, 18b, 18c) are located in the stages (14a-14c) to transfer heat to the harvest product (12) in each of the corresponding stages (14a-14d). The heat exchangers (16a and 16b) are radiant heat exchangers that efficiently heat the harvest product (12) via radiant heat transfer, with heaters (19a, 19b) being provided to maintain the heat exchangers (16a, 16b) within a desired temperature range. The heat exchangers (18a-18c) are condensers that efficiently recycle the heat within the dryer (10) by transferring heat back to the harvest product (12) by condensing water that has been evaporated from the harvest product (12) elsewhere in the dryer (10).

Abstract: A two part locking collar for bearing assemblies which is received around axial fingered ends of the bearing's inner race and drawn together by differential screws, each having a part of one thread and a part of a different thread.

Abstract: A double row cylindrical expansion bearing assembly in which a recessed cylindrical outer raceway has an axial length substantially the same as the axial length of the double row of rollers and the inner race has a raceway of an axial length in excess of that of the outer raceway.

Abstract: In a bearing with a dimple in a grease passage, the improvement wherein the locking pin is urged toward a grease fitting by a spring washer; when the pressure of the introduced grease is excessively high, the locking pin is forced downwardly against the spring washer and blocks the grease passageway through the outer race.

Abstract: A bearing in which a locking or locating pin is used to substantially prevent relative motion between its outer race and its housing, the locking pin preferably being formed by a cold heading technique from a slug of metal so, as to have a generally cylindrical sleeve and a pin-like member in the sleeve which extends therefrom. When an axial compressive force is applied to the locking pin, the pin-like member telescopes into the sleeve, thereby preventing damage to the outer race of the bearing.

Abstract: A shaft locking device for bearing assemblies wherein inner ring finger extensions of the bearing assembly include recessed grooved areas therein at a position remote from the extremities, the grooves being of sufficient breadth and depth to convert shearing stress along such area to bending stress to increase locking tightness and improve radial and thrust accommodation capacity.