Front Axle

Front Axle

 

a set of subassemblies or a separate chassis assembly on self-propelled wheeled vehicles (automobiles, tractors) that connects the front part of the frame or load-carrying body to the front wheels. The design of a front axle depends on the type of suspension. With conventional spring suspension, the front axle is a rigid unsprung beam to which the wheel hubs are attached by means of steering knuckles and kingpins. With independent suspension the front axle is replaced by a load-carrying transverse frame member to which hinged rocker arms are attached.

On four-wheel-drive vehicles the front axle is powered as well as the rear axle. In this type of construction the load-carrying beam of the front axle is rigidly joined to the transmission housing. Short semiaxles are connected to the wheels by means of special constant-velocity joints. On rough terrain, the front axle can be connected through a transfer case with a separate shift lever.

References in periodicals archive ?
The issue centres around steering oscillations that can occur with a coil-sprung solid front axle under certain circumstances, such as hitting a pothole or under hard braking.
One is fitted between the engine and the transmission and the other two are on the front axle, making the SF90 Ferrari's first four-wheel drive sports car.
The car registration card would carry features like vehicle owners' name, CNIC details, chassis number, registration number, date of registration, engine number, previous registration, token tax expiry date, number of cylinders, type of body, color of vehicle, maker's name, class of vehicle, unladen weight, reg laden weight, tyre size, front axle, rear axle, other axle, year of manufacturing, seating capacity, horse power/CC and Assessed Annual Tax.
The card has features like vehicle owners' name, CNIC, engine number, previous record, token tax expiry date, number of cylinders, type of body, color of vehicle, maker's name, model of vehicle, tyre size, front axle, back axle, other axle, capacity, horse power/CC and Tax.
Where [m.sub.F] is load of front axle; [m.sub.R] is load of rear axle; [k.sub.F] is roll stiffness of front axle; [k.sub.R] is roll stiffness of rear axle and [k.sub.c] is torsion stiffness of frame.
Made of lightweight carbon fibre, the splitter effectively reduces the lift on the front axle.
Points A, C, and D represent the centers of semitrailer axle, tractor's rear axle, and tractor's front axle respectively.
Their first patent covered a front-to-rear axle power transfer case; the second improved front axle steering and drive capacity.
Width: 2,042 mm (front axle) / 2,048 mm (rear axle)
Its dual front axle makes for an improbably tight turning circle for such a long vehicle.