行星減速機是(shi)(shi)一(yi)種(zhong)用途(tu)廣泛的(de)(de)工業(ye)(ye)產(chan)品，可以降低電機(ji)的(de)(de)轉速(su)(su)(su)(su)，同(tong)時(shi)增大輸(shu)出(chu)轉矩(ju)(ju)。行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)可作為(wei)配套部件用于起重、挖掘、運(yun)輸(shu)、建筑(zhu)等行(xing)(xing)(xing)(xing)業(ye)(ye)。行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)的(de)(de)基本驅動(dong)結構是(shi)(shi)：行(xing)(xing)(xing)(xing)星(xing)(xing)輪、太陽輪和內(nei)(nei)齒(chi)(chi)圈(quan)、驅動(dong)電機(ji)（馬達）。行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)回程(cheng)間隙：將輸(shu)出(chu)端(duan)固定，輸(shu)入端(duan)順時(shi)針和逆時(shi)針方向旋轉，使輸(shu)入端(duan)產(chan)生額(e)定扭(niu)矩(ju)(ju)+-2%扭(niu)矩(ju)(ju)時(shi)，減(jian)(jian)速(su)(su)(su)(su)機(ji)輸(shu)入端(duan)有一(yi)個微小的(de)(de)角(jiao)位移(yi)，此角(jiao)位移(yi)就是(shi)(shi)回程(cheng)間隙.單(dan)位是(shi)(shi)”分(fen)”,就是(shi)(shi)一(yi)度的(de)(de)六十分(fen)之(zhi)一(yi).也有人(ren)稱(cheng)之(zhi)為(wei)背隙。行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)的(de)(de)行(xing)(xing)(xing)(xing)星(xing)(xing)輪、太陽輪、內(nei)(nei)齒(chi)(chi)圈(quan)組成(cheng)一(yi)套行(xing)(xing)(xing)(xing)星(xing)(xing)齒(chi)(chi)輪組，一(yi)套稱(cheng)為(wei)一(yi)級行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)；行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)的(de)(de)級數(shu)指的(de)(de)是(shi)(shi)行(xing)(xing)(xing)(xing)星(xing)(xing)齒(chi)(chi)輪的(de)(de)套數(shu)，從(cong)行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)內(nei)(nei)部結構圖可以看出(chu)行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)的(de)(de)驅動(dong)結構為(wei)行(xing)(xing)(xing)(xing)星(xing)(xing)輪、太陽輪和內(nei)(nei)齒(chi)(chi)圈(quan)。一(yi)級行(xing)(xing)(xing)(xing)星(xing)(xing)減(jian)(jian)速(su)(su)(su)(su)機(ji)指的(de)(de)是(shi)(shi)擁有一(yi)套（行(xing)(xing)(xing)(xing)星(xing)(xing)輪、太陽輪、內(nei)(nei)齒(chi)(chi)圈(quan)組成(cheng)一(yi)套）的(de)(de)減(jian)(jian)速(su)(su)(su)(su)機(ji)。

一級行星減速(su)機(ji)和(he)二級行星減速(su)機(ji)的區別：

1、兩者的區(qu)別實際就是(shi)齒(chi)輪套數的區(qu)別

2、效(xiao)(xiao)率(lv)的區別，二級(ji)行(xing)(xing)星減速(su)機的效(xiao)(xiao)率(lv)比一級(ji)行(xing)(xing)星減速(su)機的效(xiao)(xiao)率(lv)低

3、長(chang)度的區(qu)別，二(er)級行星(xing)減速(su)機比一級行星(xing)減速(su)機要長(chang)。

4、驅(qu)動比(bi)的區別(bie)，二級(ji)(ji)行星減速(su)機(ji)比(bi)一(yi)級(ji)(ji)行星減速(su)機(ji)驅(qu)動比(bi)大。