Products Descriptions
โย Product name:ย Hot Roller Automobile Half Axle Sleeve
โย Standards: AISI, ASTM, BS, DIN, GB, JIS
โย Place of origin: Tianjin, China (Mainland)
โย Brand name: Runfei
โย Payment terms: L/C, T/T (30% deposit)
โย Certifications: ISO 9001, SGS, RoHS Directive-compliant
โย Packing details: Standard seaworthy packing, horizontal type and vertical type are all available
Our Advantages
โย We can provide factory price with trading company services
โย We control production quality very strictly to keep none compensation
โย We guarantee 24 hours response and 48 hours solution providing service
โย We accept small order quantity before formal cooperation
โย We offer good quality with reasonable price, faster delivery with better payment terms
โย We have professional teams and the factory
โย It’s very important for a company to be honest in the process of trading and so do we
Front Axle and Steering System
Front axle carries the weight of the front part of the automobile as well as facilitates steering and absorbs shocks due to road surface variations. The front axles are generally dead axles, but are live axles in small cars of compact designs and also in case of four-wheel drive. The steering system converts the rotary motion of the driver’s steering wheel into the angular turning of the front wheels as well as to multiply the driver’s effort with leverage or mechanical advantage for turning the wheels. The steering system, in addition to directing the vehicle in a particular direction must be arranged geometrically in such a way so that the wheels undergo true rolling motion without slipping or scuffing. Moreover, the steering must be light and stable with a certain degree of self-adjusting ability. Steering systems may also be power assisted. The chapter discusses the front axle construction and its alignยญment, and steering geometry and steering systems.
Front Axle
The front axle (Fig. 27.1) is designed to transmit the weight of the automobile from the springs to the front wheels, turning right or left as required. To prevent interference due to front engine location, and for providing greater stability and safety at high speeds by lowering the centre of gravity of the road vehicles, the entire centre portion of the axle is dropped. As shown in Fig. 27.1, front axle includes the axle-beam, stub-axles with brake assemblies, u ack-rod and stub-axle arm.
Front axles can be live axles and dead axles. A live front axle contains the differential mechanism through which the engine power flows towards the front wheels. For steering the front wheels, constant velocity joints are contained in the axle half shafts. Without affecting the power flow through the half shafts, these joints help in turning the stub axles around the king-pin.
The front axles are generally dead axles, which does not transmit power. The front wheel hubs rotate on antifriction bearings of tapered-roller type on the steering spindles, which are an integral part of steering knuckles. To permit the wheels to be turned by the steering gear, the steering spindle and steering knuckle assemblies are hinged on the end of axle. The pin that forms the pivot of this hinge is known as king pin or steering knuckle pin. Generally dead front axles are three types. In the Elliot type front axles the yoke for king spindle is located on the ends of I-beam. The axle ends are forked to hold the steering knuckle extension between them. The reverse Elliot front axles have hinged spindle yoke on spindle itself instead of on the axle. The forked portion is integral with the steering knuckle. This type is commonly used as this facilitates the mounting of brake backing plate on the forged legs of the steering knuckle. In the Lemoine type front axle, instead of a yoke type hinge, an L-shaped spindle is used which is attached to the end of the axle by means of a pivot. It is normally used in tractors.
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