We can see many parts in cars, one of which is 3102-2201025 Russian universal joint cross .

The advantage of the cross universal joint is to make the equipment transmission design simpler. The function of the universal joint is:

1. The transmission shaft can transmit the power of the transmission (or transfer) to the reduction gear in the main transmission in a balanced manner within a certain range of angle changes, to avoid damage to the transmission shaft components;
2. There are two types of universal joints. Variable speed universal joint; that is, the commonly used cross-axis universal joint. During one revolution of the driving shaft, the rotational angular velocity of the driven shaft is not equal;
3. To achieve constant speed rotation, generally should be used in pairs, that is, install two universal joints at both ends of the driveshaft, so that the universal joint forks at both ends of the driveshaft are in the same plane.

Many universal joints, such as the 5-7126X 6H2577 universal joint , act on different models of cars, just to better match them.