錠(ding)子的支承形式大體分為：

①上軸承和錠(ding)底均為剛性支承；

②上軸承(cheng)和錠底(di)均為(wei)彈性支承(cheng)；

③上軸承(cheng)和錠底是剛性連接，整(zheng)體由(you)彈性元件支承(cheng)；

④上軸承為(wei)(wei)剛(gang)性支承,錠底為(wei)(wei)彈性支承等。使用較為(wei)(wei)廣(guang)泛的是第(di)4類支承形(xing)式(shi)。

上(shang)(shang)(shang)軸承(cheng)(cheng)連(lian)同軸承(cheng)(cheng)座壓(ya)配(pei)在(zai)錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)腳(jiao)中(zhong)，或(huo)上(shang)(shang)(shang)軸承(cheng)(cheng)直(zhi)接(jie)壓(ya)配(pei)在(zai)錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)腳(jiao)中(zhong)。而錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)有(you)(you)的是(shi)分(fen)離(li)式(shi)結(jie)構，即錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)與上(shang)(shang)(shang)軸承(cheng)(cheng)分(fen)離(li),錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)裝配(pei)在(zai)套管內，借彈性元件(jian)(jian)組(zu)合(he)裝在(zai)錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)腳(jiao)內；有(you)(you)的是(shi)連(lian)接(jie)式(shi)結(jie)構，即上(shang)(shang)(shang)軸承(cheng)(cheng)與錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)通過彈性元件(jian)(jian)連(lian)接(jie)成整體(ti)。這種支承(cheng)(cheng)形式(shi)使錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)可以(yi)徑向擺動，上(shang)(shang)(shang)下軸承(cheng)(cheng)在(zai)錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)子(zi)高速回轉(zhuan)時可自調中(zhong)間，錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)尖(jian)與錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)保持正(zheng)常的接(jie)觸。在(zai)錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)的周(zhou)圍還(huan)設有(you)(you)吸(xi)(xi)振(zhen)(zhen)裝置：組(zu)合(he)套筒或(huo)吸(xi)(xi)振(zhen)(zhen)圈(quan)簧，連(lian)同錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)底(di)浸沒(mei)在(zai)潤滑油中(zhong)，利(li)用(yong)油層的粘性阻尼作用(yong)吸(xi)(xi)振(zhen)(zhen)，使錠(ding)(ding)(ding)(ding)(ding)(ding)(ding)子(zi)在(zai)高速運轉(zhuan)時很平穩。