Inactive

Item Name: Hub Assembly, Vehicular NSN: 2530-01-203-5746 Part Numbers: AM General, LLC (CAGE: 34623) P/N 5598767 or U.S. Government (CAGE: 19207) P/N 12338284-2 Estimated Quantity: 3,000 End Item: Bas... Item Name: Hub Assembly, Vehicular NSN: 2530-01-203-5746 Part Numbers: AM General, LLC (CAGE: 34623) P/N 5598767 or U.S. Government (CAGE: 19207) P/N 12338284-2 Estimated Quantity: 3,000 End Item: Basic and A1 High Mobility Multi-Purpose Wheeled Vehicle (HMMWV) Description: This hub assembly is the mechanical device that keeps the wheel attached to the vehicle while allowing the wheel to freely turn. The HMMWV utilizes a geared hub assembly which provides a means for changing gear ratios on the drivetrain and adding ground clearance. The geared hub assembly is part of the portal axle. Portal axles (or portal gear lifts) are an off-road vehicle suspension and drive technology where the axle tube or the half-shaft is off-set from – usually above – the center of the wheel hub and where driving power is transferred to each wheel via a simple gearbox, built onto each hub. This gives two advantages: ground clearance is increased, particularly beneath the low-slung differential housing of the main axles — and secondly, any hub reduction gearing allows the axle halfshafts to drive the same power but at reduced torque (by using higher shaft speed). This reduces load on the axle crownwheel and differential. Compared to normal layout, portal axles enable the vehicle to gain a higher ground clearance, as both the axle tube and differential casing are tucked up higher under the vehicle. Due to the gear reduction at the wheel which lessens the torque on all the other drivetrain components, the size of the differential casing can be reduced to gain even more ground clearance. Additionally, all drivetrain elements, in particular the transfer gearbox and driveshafts, can be built lighter. This can be of use in lowering the center of gravity for a given ground clearance. Where a vehicle also requires a reduced top speed, in at least one gear, the gear ratio can be chosen to reduce this. This specific geared hub assembly is unique to the HMMWV that is used on aggressive terrain. The government may not have proprietary rights to this technical data package (TDP). Additionally, this sources sought announcement is not for a development effort, but a 5-year indefinite delivery, indefinite quantity (IDIQ) type of contract.