MerkelU-型活塞杆用密封圈T20型1.特点Merkel---T20型U-型密封圈，断面不对称，密封圈内侧的密封唇缩进，密封圈外径与腔体孔径采用过盈配合。2.优点单向密封作用的活塞杆密封圈，适用于ISO5597标准腔体；在密封系统中非常适合于用作辅助密封■耐介质特性好■工作温度范围宽■***的静态和动态密封性能■与相应的压紧型密封圈或者带有副唇的U型圈比较，非常低的反冲力■动态条件下残油回抽能力强推荐应用工程机械、农业机械、注塑机类、支承油缸、叉车类、起重机类、装卸平台类、标准油缸等3.材料直径<500mm材料代码硬度颜色聚氨酯94AU142邵氏A95蓝色直径>500mm材料代码硬度颜色聚氨酯93AUV167邵氏A93红色4.操作条件材料95AUV142/93AUV167温度范围℃液压油HL，HLP－30...+110HFA流体+5...+50HFB流体+5...+50HFC流体－30...+40HFD流体－水+5...+50HETG(油菜籽油)－30...+60HEES（合成酯）－30...+80HEPG（乙二醇）－30...+50矿物油脂－30...+110压力MPa40速度m/s0.55.腔体和机加工标准表面粗糙度RaRmax滑动表面0.05…0.3um<2.5um沟槽底面<1.6um<6.3um沟槽侧面<3.0um<15um在切削深度c＝Rz/2和基准线Cref＝0％时，表面支承长度比Mr>50％至***大90％。6.安装间隙尺寸密封圈工作过程中，在无压侧出现的***大间隙尺寸，对密封功能具有决定性意义→见技术手册。断面尺寸***大允许间隙尺寸16MPa26MPa32MPa40MPa<5.00.450.400.35->5.0…7.50.500.450.400.35>7.5…12.50.550.500.450.4015.00.600.550.450.40>15…200.620.570.470.42>20…250.650.570.470.42公差推荐值和尺寸D2允许间隙尺寸、公差、导向环间隙和导向环承压状态下的偏差，都要在尺寸D2时加以考虑。→见技术手册。d*D*H/L订货号T20-8*16*5.7/6.324223246T20-8*16*8.2/924223247T20-10*18*5.7/6.324223248T20-10*20*7.3/824223249T20-10*20*8.2/924223253T20-11*19*5.7/6.324354784T20-12*20*5.7/6.324223254T20-12*22*7.3/824223255T20-12*22*8.2/924187190T20-14*22*5.7/6.324268060T20-14*24*7.3/824223256T20-14*24*8.2/924223257T20-15*25*8.2/924223258T20-16*24*5.7/6.324223260T20-16*26*7.3/824223261T20-16*26*8.2/924223262T20-18*26*5.7/6.324268070T20-18*26*8.2/924223263T20-18*28*7.3/824223264T20-18*28*8.2/924187191T20-20*28*5.7/6.324223265T20-20*30*7.3/824223266T20-20*30*8.2/924187192T20-22*30*5.7/6.324236862T20-22*30*7.3/824249568T20-22*30*8.2/924223267T20-22*32*7.3/824223268T20-22*32*8.2/924187193T20-22*35*9.1/1024369456T20-25*33*5.7/6.324223269T20-25*33*8.2/924308334T20-25*35*6.4/724360709T20-25*35*7.3/824223070T20-25*35*8.2/924223271T20-25*38*8.6/9.524362136T20-25*40*10/1124223272T20-25.4*34.56*5.9/6.524370951T20-26*36*10/1124372447T20-27*36*6.8/7.524268341T20-28*36*5.7/6.324237159T20-28*36*8.2/924249569T20-28*36*10/1124223273T20-28*38*7.3/824223274T20-28*38*8.2/924187195T20-28*40*10/1124223275T20-28*43*11.4/12.524261406T20-29*37*5.7/6.324368792T20-30*38*5.7/6.324236861T20-30*38*8.2/924223276T20-30*40*10/1124187196T20-30*42*8.7/9.624373870T20-30*45*10/1124223277T20-32*40*5.7/6.324234472T20-32*40*8.2/924258895T20-32*42*7.3/824223278T20-32*42*8.2/924249570T20-32*42*10/1124223279T20-32*44*8.2/924369393T20-32*47*10/1124187197T20-34*44*6.4/724368632T20-35*43*5.7/6.324236860T20-35*43*6.8/7.524360144T20-35*45*10/1124187198T20-35*50*10/1124187199T20-35*52*11.8/1324374124T20-36*44*5.7/6.324266873T20-36*44*8.2/924355159T20-36*46*7.3/824223280T20-36*46*10/1124187200T20-36*48*7.3/824314092T20-36*48*10/1124267642T20-36*50*10/1124345948T20-36*51*10/1124358522T20-36*51*11.4/12.524269445T20-36*52*13/14.324375441T20-37*47*10/1124369267T20-40*48*5.7/6.324239428T20-40*48*8.2/924223281T20-40*50*7.3/824223283T20-40*50*8.2/924223282T20-40*50*10/1124187702T20-40*55*10/1124187203T20-40*55*11.4/12.524261407T20-40*58*11.4/12.524360465T20-42*50*5.7/6.324261932T20-42*52*10/1124223284T20-44*52*5.7/6.324292881T20-44.5*54*6.5/7.124333357T20-45*53*8/924290032T20-45*53*8.2/924223285T20-45*55*7.3/824223286T20-45*55*10/1124223287T20-45*57*8.7/9.624373871T20-45*60*10/1124187204T20-46*56*7.3/824375268T20-47*59*9.6/10.524360464T20-48*56*8.2/924233879T20-50*58*8/924290848T20-50*58*8.2/924223250T20-50*60*7.3/824223251T20-50*60*10/1124187205T20-50*62*10/1124223289T20-50*65*10/1124187206T20-50*65*11.4/12.524223290T20-50*70*11.4/1324223291T20-50.8*60.3*6.5/7.124333369T20-50.8*66.7*12.3/13.524296042T20-50.8*69.85*11.8/13.524333466T20-51*61.4*6.4/724362578T20-52*62*6.4/724374053T20-53*63*9/1024371047T20-55*63*7.3/824236859T20-55*63*8/924290846T20-55*63*8.2/924223292T20-55*65*7.3/824239429T20-55*65*10/1124187207T20-55*65*11.8/1324187208T20-55*67*8.7/9.624374139T20-55*67*10/1124261225T20-55*70*10/1124238292T20-55*70*11.4/1324187209T20-56*66*7.3/824266874T20-56*66*8.2/924223293T20-56*66*10/1124236884T20-56*68*10/1124367432T20-56*71*11.4/12.524223294T20-56*71*11.4/1324223295T20-60*68*8.2/924219456T20-60*70*7.3/824236858T20-60*70*10/1124223296T20-60*70*11.8/1324187211T20-60*72*10/1124261224T20-60*75*10.4/1124337823T20-60*75*11.4/12.524223297T20-60*75*11.4/1324187212T20-60*80*16.6/18.224373695T20-63*73*11.8/1324223298T20-63*75*8.7/9.624246801T20-63*78*10/1124236586T20-63*78*11.4/12.524223299T20-63*80*12.7/1424370282T20-63*83*14.6/1624289375T20-65*73*8.2/949000807T20-65*75*7.3/824370874T20-65*75*11.8/1324187213T20-65*77*8.7/9.624251887T20-65*80*10/1124373620T20-65*80*11.4/1324223300T20-65*85*11.4/1324223301T20-70*78*8.2/924314731T20-70*79.6*7.9/8.724373899T20-70*80*11.8/1324187214T20-70*82*8.7/9.624236857T20-70*85*10/1124233880T20-70*85*11.4/12.524212669T20-70*85*11.4/1324223302T20-70*86*14/15.524363001T20-70*90*11.4/1324223304T20-70*90*14.6/1624223303T20-72*84*8.7/9.624362391T20-72*92*14.6/1624358384T20-73*85*8.7/9.624374940T20-73*85*11.4/12.524363261T20-75*85*12/12.524227939T20-75*87*8.7/9.624266875T20-75*88*10/1124374792T20-75*90*9/9.924374761T20-75*90*10/1124223305T20-75*95*14.6/1624370708T20-80*90*7.3/82436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