Propeller Shaft Truck. multistage propeller shaft the intermittent pieces are supported by center bearings which are mounted on the bracket of cross member [2] In case of two or multi stage propeller shaft length of the rear propeller shaft change in length The variation in the length of rear propeller shaft is allowed using a splined shaft [1] File Size 259KBAuthor Kiran A Jagtap P M SonawanePage Count 4Publish Year 2015.
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Propeller Shaft | Function types Components and Requirement The drive shaft (also called propeller shaft or prop shaft) is a component of the drive train in a vehicle with the purpose of delivering torque from the transmission to the differential which then transmits this torque to the wheels in order to move the vehicle.
Propeller Shaft Function , types , Components and Requirement
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Design and Analysis of Drive Shaft for Heavy Duty Truck
Avoidable Design Faults in Truck Propeller ShaftsOverloading A Major ProblemDesign and Failure Mode of Propeller ShaftsManufacturing Improvements For Propeller ShaftsThe fitment of needle rollers in the bearing cup into the yoke is not a calibrated press fit process It is manual fitment A tight fit causes high friction and fast wear on the race Mating surfaces of the shaft splines are machined Sliding friction will impede free to and fro movements The propeller shaft assembly wobbles and causes heavy vibrations and the entire drive system becomes damaged beyond repair Background In 1960 TELCO [now known as Tata Motors] finalized an agreement with Daimler Benz AG of Germany for manufacturing trucks in India Telco had a sevenyear contract with Daimler Benz Those models were developed in World War II and these trucks were robust The real reason for bad service records was excessive overloading of the trucks Our main roads and cross country roads were in a very bad state Telco started manufacturing indigenous models of trucks in 1980 (Please see photo A below) We have good roads now but the practice of overloading continues The fuel cost in India is nearly $1 per liter The road taxes are also high This is the reason why truck drivers overload their vehicles to earn more money to meet their ends The propeller shaft transmits drive power from the engine via a gear box to the differential crown wheel pinion It propels the vehicle at variable torque and variable rotational speeds in a floating state in relation to its rapid positional changes whilst adjusting spontaneously to changes in its length and its 3D planar motion The threedirectional motion of the propeller shaft is seriously restricted when the vehicle runs on the torture track or on irregular cross country roads The universal joints have Ufork couplings with universal spider arms on needle roller bearings Imagine what happens to human shoulder ball joints if there is inertia in its free motion due to some deformation or localized physical constraint We feel immense pain and consequent swelling in the muscles The propeller shaft is not able to express itself for any possible intrinsic inertia in its universal joints system The propeller shaft wobbles and the entire floating drive system eventually fails Th A propeller shaft assembly is centrifugally balanced on a Schenk balancing machine The electronic proximity sensors indicate eccentricity of the shaft Steel strips are spot welded to the shaft at an appropriate location to avoid eccentricity The propeller shaft has machined grooves of square profile The mating surfaces are rough It causes inertia in free axial movement of the shaft The mating surfaces of the grooves are rough If the prop shaft assembly has genuinely free joints it becomes difficult to reckon the offset in the balancing operations The bearing cups with its needle rollers are press fitted into the spider arms to a blind location against a snap ring registered in its groove The needle rollers get partially jammed into its position Any excessive force applied on the bearing cup may cause the needle roller ends to contact the bearing cup inner end surface and the surface contact restricts free rotational swivel motion of the spider arm This is blind fitment.
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Propeller Shaft: Function, Bad Symptoms and Replacement Cost
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It will cost anywhere between $400 and $1000 to replace a propeller shaft The parts cost is anywhere between $300 and $800 The labor costs are anywhere from $100 to $200 Of course the make and model of your car has a lot to do with the costs as well The propeller shafts of certain models cost more than the shafts of other models.