Abstract: A transmission according to the disclosure includes: a case; a carrier housed inside the case and configured to rotate relative to the case; and a seal mechanism provided between the case and the carrier. The seal mechanism includes a seal lip portion having a lip end for sealing, the lip end being in linear contact with an outer circumferential surface of the carrier along a circumferential direction of the carrier.

Abstract: One object is to provide an industrial device in which abrasion powder (conductive substance) can accumulate on a sensor to an amount necessary for proper failure prediction. An industrial device according to an embodiment of the present invention includes: a lubricant reservoir portion including a region in which a lubricant circulates; and a sensor including a pair of electrodes disposed in the region in which the lubricant circulates, the sensor being configured to sense variation of electric resistance between the pair of electrodes.

Abstract: A gear transmission includes a crankshaft, an eccentric rotation gear and a rotation gear. The eccentric rotation gear is configured to rotate eccentrically with a rotation of the crankshaft. The rotation gear meshes with the eccentric rotation gear. The crankshaft includes a shaft portion, a first eccentric portion and a second eccentric portion. The first eccentric portion engages with the eccentric rotation gear. The second eccentric portion is disposed between the shaft portion and the first eccentric portion. A rotation axis of the first eccentric portion is offset with a first distance from a rotation axis of the shaft portion. A rotation axis of the second eccentric portion is offset with a second distance from the rotation axis of the shaft portion. The second distance is shorter than the first distance.

Abstract: A gear transmission includes a crankshaft, an eccentric rotation gear and a rotation gear. The eccentric rotation gear is configured to rotate eccentrically with a rotation of the crankshaft. The rotation gear meshes with the eccentric rotation gear. The crankshaft includes a shaft portion, a first eccentric portion and a second eccentric portion. The first eccentric portion engages with the eccentric rotation gear. The second eccentric portion is disposed between the shaft portion and the first eccentric portion. A rotation axis of the first eccentric portion is offset with a first distance from a rotation axis of the shaft portion. A rotation axis of the second eccentric portion is offset with a second distance from the rotation axis of the shaft portion. The second distance is shorter than the first distance.