Abstract: An inter-axle differential assembly comprising a driving input shaft, a forward differential wheel, a rear differential wheel, a differential spider connected for common rotation with the input shaft and on which differential pinions configured to meshingly engage with said differential wheels are rotatably mounted, and a differential housing to which the differential spider is connected for common rotation. The assembly comprising an output wheel via which torque is transferable to a rear driving axle, and a connection means movable between: an open position which connects the output wheel to the rear differential wheel so that the differential housing can rotate independently of the rear differential wheel, a locking position connecting both of the differential housing and the output wheel to the rear differential wheel, and a disconnecting position connecting the differential housing to the rear differential wheel, so that the output wheel can rotate independently of the rear differential wheel.

Abstract: Disclosed herein is an axle assembly and a heavy load vehicle comprising the axel assembly. The axle assembly comprises an interaxle differential configured to distribute torque to first and second axles. The interaxle differential comprises an input shaft and an output shaft. A first gear wheel is journaled in a first bearing about the input shaft. The input shaft is journaled in relation to the output shaft via a tapered roller bearing having a small end and a large end. A lubricant receiving space is fluidly connected to the small end of the tapered roller bearing, and the large end of tapered roller bearing is fluidly connected to the first bearing. Thus, the first bearing is lubricated when there exists a difference in rotational speed between the input and output shafts.

Abstract: Disclosed herein is an axle assembly and a heavy load vehicle comprising the axel assembly. The axle assembly comprises an interaxle differential configured to distribute torque to first and second axles. The interaxle differential comprises an input shaft and an output shaft. A first gear wheel is journaled in a first bearing about the input shaft. The input shaft is journaled in relation to the output shaft via a tapered roller bearing having a small end and a large end. A lubricant receiving space is fluidly connected to the small end of the tapered roller bearing, and the large end of tapered roller bearing is fluidly connected to the first bearing. Thus, the first bearing is lubricated when there exists a difference in rotational speed between the input and output shafts.

Abstract: An inter-axle differential assembly comprising a driving input shaft, a forward differential wheel, a rear differential wheel, a differential spider connected for common rotation with the input shaft and on which differential pinions configured to meshingly engage with said differential wheels are rotatably mounted, and a differential housing to which the differential spider is connected for common rotation. The assembly comprising an output wheel via which torque is transferable to a rear driving axle, and a connection means movable between: an open position which connects the output wheel to the rear differential wheel so that the differential housing can rotate independently of the rear differential wheel, a locking position connecting both of the differential housing and the output wheel to the rear differential wheel, and a disconnecting position connecting the differential housing to the rear differential wheel, so that the output wheel can rotate independently of the rear differential wheel.