1、轉盤軸承（回轉支承）四點接觸球軸承（QW系列）單排四點接觸球型回轉支承由兩個座圈組成，結構緊湊，重量輕，鋼球與圓弧滾道四點接觸，能同時承受軸向力、徑向力和傾翻力矩。回轉式輸送機、焊接操作機、中小型起重機和挖掘機等工程機械均可選用。 The single row four point contact ball type slewing bearing is composed of 2 seat rings it features compaction design lighten weight. The balls contact with the circular race at four p

2、oints, via which the axial force. Radial force and tipping moment may be born simultaneously it may be used for slewing conveyers. Welding operating consoles light, medium duty cranes, excavators and other engineering machines.型號表示方法：單排球式回轉支承型式（QW系列）1、 按齒輪傳動方式分為：a. W外齒式；b. N內齒式；c. U無齒式。2、 按安裝孔型式分為：a

3、. A型內、外圈安裝孔均為通孔；b. B型內、外圈安裝孔均為螺孔；c. C型外圈安裝孔為螺孔，內圈安裝孔為通孔；d. D型外圈安裝孔為通孔，內圈安裝孔為螺孔。3、 按精度等級分為：a. 精密級；b. 普通級。用G標注的是精密級，不加標注的是普通級。4、 齒輪模數分類代號中，用“A”標注的是該規格的大模數，不加標注的是該規格的小模數。標記示例：單排球式回轉支承，外齒式，外圈螺孔內圈通孔連接，滾道中心直徑1250mm，鋼球直徑40mm，齒輪模數m=12，普通級：回轉支承QWC 1250 . 40A JG/T661999表1 QW型基本參數系列表(表1)序號型 號外 形 尺 寸安 裝 孔 尺 寸外

4、齒 輪 參 數JG/T66-1999通 孔螺 孔質量DdnHhDuDn1nDuDnd1TnzmddaLXkgmmmmmmmm1QW400.1648031860104483521512448352M1428121433.5500.550444-0.545QW400.16A1254500504462QW450.1653036849840212498402121573.5549.555351QW450.16A1384552556523QW500.165804185484521454845214150460060458QW500.16A1215605610584QW560.16640478608512

5、1460851214165466066465QW560.16A1335665670665QW560.20654464706185021714618502M16301416946766805078QW560.20A1365680685796QW630.207245346885721668857216186474484786QW630.20A1505750755887QW710.208046147686521876865218166583083599QW710.20A13968348401018QW800.2089470485874220858742201546924930114QW800.20A

6、11689289361149QW800.25904692788647362218864736M203618156693694258143QW800.25A118894495214710QW900.2510047929648362096483620130810401048162QW900.25A105101050106016811QW1000.251104892106493624106493624143811441152182QW1000.25A115101150116018512QW1000.32112087690107492624241074926M224024144811521160702

7、27QW1000.32A116101160117023213QW1120.321240996119410462811941046281291012901300272QW1120.32A108121296130827514QW1250.3213701126132411763213241176321421014201430302QW1250.32A119121428144030915QW1400.3215201276147413263614741326361311215721584337QW1400.32A113141582159634716QW1250.401390110810212133611

8、64263213361164M244532144101440145080396QW1250.40A120121440145239217QW1440.4015401258148613143614861314361331215961608448QW1440.40A114141596161044318QW1600.4017401458168615144016861514401501218001812528QW1600.40A129141806182053419QW1800.4019401658188617144418861714441431420022016583QW1800.4A126162016

9、203260720QW1600.501762143412417041496304017041496M2750401511218121824100714QW1600.50A130141820183472721QW1800.50196416341241219041696304419041696M2750441451420302044100-0.5845QW1800.50A127162032204884322QW2000.5021621834210418964821041896481391622242240912QW2000.5A124182232225092723QW2240.5024022074

10、2344213654234421365415416246424801020QW2240.50A1381824842502107824QW2500.50266223342604239660260423966015218273627541171QW2500.50A1372027402760117525QW2500.60269623041501426262374336026262374M30566015418277227901221677QW2500.60A1392027802800170126QW2800.60299226042926267466292626746617018306030781817QW2800.60A1542030803100190427QW3150.60334229543276302472327630247217120342034402087QW3150.60A1562234323454213928QW3550.60374223543676342478367634247819120382038402355QW3550.60A1542538503875250029QW4000.60420038044126387480412638748019522429043122787QW4000.60A17225