空轉(zhuǎn)輥道——通常借助軋件重力來推動，所以輥道之平面多做成與水平面之間有斜度，以利用重力作用，因此又稱為重力輥道。一般小型軋機的輥道，特別是升降臺上的輥道，盡可采用重力輥道而不必采用轉(zhuǎn)動輥道。有些工作輥道的延長部分也有采用重力輥道的。

The idle roller table is usually driven by the gravity of the rolled piece, so the plane of the roller table is made of a gradient between the horizontal plane and the horizontal plane, so as to make use of the gravity effect, so it is also called the gravity roller table. The rolling mill of a small mill, especially the roller table on the lift table, can use the gravity roller without using the rotating roller table. Some of the lengthening parts of the working rollers also use the gravitational roller.

新式的高速熱軋機及連續(xù)式熱軋機一般都采用單獨傳動系統(tǒng)。輥子Φ155的支架采用槽鋼，輥子軸用壓板和螺栓固定在槽鋼翼緣上。單獨傳動優(yōu)點很多，它的制作簡單，由于不需要傳動齒輪及傳動軸，從而大大簡化了輥道的機械結(jié)構(gòu)，使裝拆、檢修和潤滑等問題也都大大簡化了，而且對輥子相互位置之準確度的要求也沒有集體傳動時那樣嚴格。

The new type of high speed hot rolling mill and continuous hot rolling mill generally use a separate transmission system. Individual drive has many advantages, making it simple, because it does not need the transmission gear and the transmission shaft, which greatly simplifies the mechanical structure of the roller, the assembly and disassembly, maintenance and lubrication problems are greatly simplified, and the accuracy of the location of each roller requirements are not as strict collective transmission.

包膠滾筒的壽命是比較長的，像這種要求就是要壽命長的，因為包在滾筒上邊也不是很方便取下來呀，所以這就又驗證一點.

The life of the rubber drum is long, and the requirement is long life, because it is not very convenient to take the package on the top of the drum, so this will verify the first point again.