行星減速機精度(du)(du)通(tong)常指的(de)是回(hui)(hui)轉(zhuan)精度(du)(du)，也稱(cheng)為(wei)(wei)(wei)回(hui)(hui)程(cheng)(cheng)(cheng)間(jian)隙(xi)，行(xing)星減(jian)(jian)(jian)(jian)速(su)(su)機(ji)的(de)精度(du)(du)單位為(wei)(wei)(wei)弧分(fen) [Arcmin]：一度(du)(du)分(fen)為(wei)(wei)(wei)60 弧分(fen)(=60 Arcmin=60′).如回(hui)(hui)程(cheng)(cheng)(cheng)間(jian)隙(xi)標為(wei)(wei)(wei)1 arcmin 時(shi)(shi),意思是說減(jian)(jian)(jian)(jian)速(su)(su)機(ji)轉(zhuan)一圈,輸(shu)出(chu)(chu)端(duan)的(de)角偏(pian)差(cha)為(wei)(wei)(wei)1/60°。在(zai)實際應用中，這個角偏(pian)差(cha)與軸(zhou)直徑有(you)關b=2·π·r·a°/360°。就是說，輸(shu)出(chu)(chu)端(duan)半(ban)徑為(wei)(wei)(wei)500mm時(shi)(shi)，齒輪箱(xiang)精度(du)(du)為(wei)(wei)(wei)jt=3′時(shi)(shi)，即a°=3/60,減(jian)(jian)(jian)(jian)速(su)(su)機(ji)轉(zhuan)一圈的(de)偏(pian)差(cha)為(wei)(wei)(wei)b=0.44mm。行(xing)星齒輪箱(xiang)驅動精度(du)(du)也稱(cheng)為(wei)(wei)(wei)回(hui)(hui)程(cheng)(cheng)(cheng)間(jian)隙(xi)，行(xing)星減(jian)(jian)(jian)(jian)速(su)(su)機(ji)的(de)回(hui)(hui)程(cheng)(cheng)(cheng)間(jian)隙(xi)是將(jiang)輸(shu)出(chu)(chu)端(duan)固定，輸(shu)入端(duan)順時(shi)(shi)針(zhen)和(he)逆時(shi)(shi)針(zhen)方向旋轉(zhuan)，使(shi)輸(shu)出(chu)(chu)端(duan)產生額定扭矩的(de)±2%扭矩時(shi)(shi)，減(jian)(jian)(jian)(jian)速(su)(su)機(ji)輸(shu)入端(duan)有(you)一個微小(xiao)的(de)角位移，此角位移即為(wei)(wei)(wei)回(hui)(hui)程(cheng)(cheng)(cheng)間(jian)隙(xi)。

行(xing)星(xing)減(jian)速機精(jing)(jing)(jing)度等(deng)級(ji)(ji)劃(hua)分(fen)(fen)：一級(ji)(ji)行(xing)星(xing)減(jian)速機的(de)精(jing)(jing)(jing)度可(ke)(ke)以做到3弧(hu)分(fen)(fen)（Arcmin）以內，二級(ji)(ji)行(xing)星(xing)減(jian)速機的(de)精(jing)(jing)(jing)度3-5弧(hu)分(fen)(fen)（Arcmin），三(san)級(ji)(ji)行(xing)星(xing)減(jian)速機的(de)精(jing)(jing)(jing)度5-8弧(hu)分(fen)(fen)（Arcmin），通常分(fen)(fen)為三(san)個等(deng)級(ji)(ji)。精(jing)(jing)(jing)密行(xing)星(xing)減(jian)速機具有高(gao)剛性、高(gao)精(jing)(jing)(jing)度（單(dan)級(ji)(ji)可(ke)(ke)做到1分(fen)(fen)以內）、高(gao)驅動效(xiao)率(單(dan)級(ji)(ji)在97%-98%)、高(gao)的(de)扭矩/體積比(bi)、終身免維護等(deng)特點(dian)。

兆威行星減速機精度范圍在1-2弧分內，直徑規格在3.4mm-38mm之間，屬于微型精密行星減速機，具有體積小、重(zhong)量輕，承載能(neng)力高，使用壽命長、運(yun)轉平(ping)穩，噪聲低、輸出扭矩大，速比(bi)大、良好、性能(neng)安全的特點。兼(jian)具功率分流、多齒嚙(nie)合獨用的特性。廣(guang)泛運(yun)用在電子產品，汽車驅動，5G通訊(xun)設備，機(ji)器人設備，工業(ye)自動化，精密(mi)儀器儀表設備，光(guang)學設備，攝影拍攝設備，智能(neng)家(jia)居等領域(yu)。