The steering wheel joint is one of the main components of the propeller shaft of each car. This mechanism performs the function of transmitting torque from the box to the drive axle (usually the rear) at an ever-changing angle during rotation. Today we will look at how the steering shaft crosspiece is structured, what it is made of and how it works.
Material
Directly, the mechanism case is made of high strength alloy steel. In the production of a mechanism called the steering shaft crosspiece, a long heat treatment step occurs, resulting in a high surface hardness of the studs. Bearing steel is used as the material for the outer cage. It is also used for the production of cage needles, which are also part of the cross.
Device, purpose, principle of operation
The crosspiece of the steering shaft itself (including Toyota Prado) is a kind of cruciform hinge that ensures alignment of all elements that rotate during transmission of torque. The drive shaft hinge has two forks that are connected by a cross. The ends of these devices are connected to four spikes, and the plugs themselves are attached to the "cardan" pipe. Thus, the steering shaft spider (including VAZ-2113) is driven by needle bearings, worn on 4 spikes (ends) of the entire mechanism.
It is also worth noting that each of the two forks has special holes. Needle bearings are also installed in them . Reliability of fixation and protection against displacement of these devices provides a snap ring. Its thickness depends on the permissible axial clearance. By the way, some motorists change the standard retaining rings to small-sized devices in order to reduce backlash and vibration.
The purpose of the crosspiece is to provide a movable joint that can change its angle with rough roads, due to which the driveshaft provides torque transmission to the drive axles. It should be noted that the crosspiece of the steering shaft can also absorb the shock and vibrations that occur during the collision of a vehicle with unevenness. Thus, this small part extends the life of the entire shaft, taking on all the stress and shock at the junction.
Dimension
Not all cars are equipped with the same size cross. Each model is equipped with its own device, so when buying, you should not focus on the choice of device for another car model. Here, for example, GAZelle and Volga, despite the fact that they have a common engine and even the device as a whole, are equipped with crosses of completely different sizes.
Life time
The steering wheel span has a very simple design, due to which it withstands shock and can be as durable as possible. On average, this device fails at 500,000 mileage, so it is considered one of the most durable and durable parts in the entire design of the car. The only thing the mechanism needs is periodic lubrication. If you regularly monitor the condition of the cross, it will serve even more than the above period.