A universal joint (U-joint) is a mechanical joint used to connect rotating shafts. Nowadays, the driveshaft and universal joints are mostly seen in rear-wheel drive and four-wheel drive vehicles.
A tube is part of a drive shaft, It is often used in front engine and rear drive automobiles. The purpose of using a tube is to keep the rear end in place during acceleration and braking.
#3 Center Bearing
The center bearing connects the two sections of the drive shaft. These bearings are meant to keep both driveshaft parts solid to reduce harmonic vibrations when the vehicle is accelerating.
#4 Midship Shaft
Midship shafts are the basic components of a coupling shaft and are part of a drive shaft that is attached to the frame on a center bearing.
#5 End Yoke
An end yoke is used for accuracy and durability. The benefit of using an end yoke is to help reduce noise and vibration to keep your driveline running easily.
#6 Slip Yoke and Tube Yoke
A slip yoke is attached to the driveshaft itself using a universal joint. The slip yoke is fitted to transfer power by sliding in and out of the transfer case. The tube yoke is also necessary for the U-joints to rotate well with the drive shaft.
Flanges are used for automotive purposes to connect the driveshaft to the transmission, transfer case, and differential. The flanges are also used to connect driveshafts to power take-offs, hydraulic pumps, and various accessories.