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A roller bearing between the axle hub and axle shaft ensures easy rotation of the non-drive wheels. On the axle side, it is mounted to the holding bracket from the chassis; on the disc side, the wheel is mounted to the bolts of the WHA. When replacing, a wheel hub assembly should be torqued to the vehicle's specifications to prevent failure. [1]
Carquest acquired Worldpac in 2004, but kept its operations separate. [7] General Parts received $258 million in 2011 for selling 33 of the company’s distribution centers and office buildings in a long-term sale-leaseback deal. [5] In June 2012, Carquest Auto Parts relaunched its Carquest.com website, offering buy online, pick up in store ...
Grease fitting on a bearing A grease nipple on the driver's door of a 1956 VW Beetle. A grease fitting, grease nipple, Zerk fitting, grease zerk, or Alemite fitting is a metal fitting used in mechanical systems to feed lubricants, usually lubricating grease, into a bearing under moderate to high pressure using a grease gun.
[7] [8] [9] The journal boxes house plain bearings. Key components of a bogie include: [6] The bogie frame: This can be of inside frame type where the main frame and bearings are between the wheels, or (more commonly) of outside frame type where the main frame and bearings are outside the wheels.
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.
GA, GB and GC: wheel-bearings (suitability up to mild, moderate and severe duty respectively) A given performance category may include greases of different consistencies. [11] The measure of the consistency of grease is commonly expressed by its NLGI consistency number.
A wheel would be placed on the rear frame section of the truck, which at the time had only four wheels, making the additional wheel the "fifth wheel". The trailer needed to be raised so that the trailer's pin would be able to drop into the central hole of the fifth wheel. Fifth wheels were originally not a complete circle and were hand forged.
In older cars, the trunnion is part of the suspension and either allows free movement of the rear wheel hub in relation to the chassis [10] or allows the front wheel hub to rotate with the steering. On many cars (such as those made by Triumph [ 11 ] ) the trunnion is machined from a brass or bronze casting and is prone to failure if not greased ...