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1、浮动油封浮动油封常用于工程机械行走部分的行星减速器,对该部件端面进行动态密封.由于其可靠性高,近几年也用作挖泥船斗轮输出轴的动态密封.此类密封属于机械密封,一般由铁合金材料的浮环及配套的丁腈橡胶O形密封圈组成.浮环成对使用,一个随旋转部件转动,一个相对静止.浮动油封的密封原理是:两个浮环靠O形密封圈受轴向压缩后的变形,产生对浮环密封端面的压紧力.随着密封端面的均匀磨损,这种由O形密封圈储存的弹性能量逐步释放,从而起到轴向补偿作用.在设定的时间内密封面能保持良好的贴合,一般密封寿命在4000h以上. 浮动油封是一种特殊型式的机械密封,是为适应恶劣的工作环境而发展起来的一种紧凑型的机械密封方式,它
2、具有抗污染能力强,耐磨,耐冲击,工作可靠,端面磨损自动补偿,结构简单等优点,在工程机械产品上应用最为普遍,在各种输送机,砂处理设备,混凝土设备上也应用广泛.目前在煤矿机械上主要用于刮板输送机的链轮,减速器以及采煤机的传动机构和摇臂,滚筒等处.此类密封产品在工程机械设备应用较为普遍和成熟,但在其他行业由于用量少,缺乏基础理论数据和使用经验,使用过程中失效现象较为普遍,难以达到预期效果. 性质：非接触式密封的一种。结构特点及其密封原理如图所示，浮环与转动轴之间保持一定的间隙，可以自由浮动，但不能与转轴一起转动，只能作径向滑移浮动，并在重力作用下与轴中心保持一定的偏心。当转轴转动时，从 浮动油封外界
3、输入密封液（常采用油液）在转轴与浮环的间隙处形成油膜。因受轴转动时产生油楔动力的作用，使油膜内保有一定的油膜压力，使浮环能自动维持与轴中心“对中”，从而使间隙量大大减小，有效地实现了对流体介质泄漏的密封。其优点是密封性能稳定，可靠，寿命长；密封的工作参数范围较宽（工作压力可达30兆帕，工作温度为-100200）；特别适合对离心式压缩机中气体介质的密封，还可实现对大气环境不泄漏，适宜易燃 、易爆、有毒、贵重气体介质的密封。缺点是浮环加工要求高，需要专门的密封油系统；存在较多的内部泄漏，但本质上仍属内部循环性质的泄漏，这与机械密封的泄漏有质的区别。广泛应用于离心式压缩机的动密封。品牌：NOK普通型
4、浮动油封件号P/N外径D1内径D2厚度H胶圈OringJH0220312220JH030542.530.517.532*5.6JH0340453414JH0380503820.641*6JH0390503914JH0380B513820.441*6JH0400524020JH0480584814.4JH045058452148.5*6JH043058432448*7JH0450B594526.8JH046059462047.5*6.5JH0460B604624JH0480B62482552*7.6JH0480C62482652*7.6JH0510655123JH0510B65.65126.85
5、5.5*6JH054068542456*7JH05557055.52258*7.5JH056070562660.8*7.6JH0610736117.664*5.2JH05757457.525JH0600746020.6JH0575B7557.525JH0580755827JH064078642567*8JH06357963.52566*8JH067080672068.5*6.5JH05858058.527JH063080.5632666*8JH0635B82.563.53266*9.5JH069084692472*8JH070084702072.5*6.5JH071084712072.5*6.
6、5JH067586.567.53271*9.5JH074086.57422.5JH0700B877021JH077587.677.513.678*4.3JH073588.573.520.4JH068089682475*8JH0690B89692475*8JH0700C89702475*8JH0700D90702875*9JH0700E90702975*9JH072091.47236.4JH073092733276*9.5JH07259272.535.6JH079592.579.52081*6.5JH074693.374.62978*9.5JH075094752978*9.5JH07709477
7、2978*9.5JH0750B94.57532JH0750C97752682*8JH081098812882*8JH0850998520JH0800100803085*9.3JH0830102832887*8.5JH082510282.535.6JH0900105902693*6.3JH0940106.59423JH0965106.696.513.698*4.6JH0880108882493*8JH088810888.7529.4JH0900B109903293*9.5JH0920109922298*7JH0905109.590.53293*9.5JH0904109.590.435.6JH09
8、10110913293*9.5JH1000112.410032JH09501149532JH104011710422JH1000B11810031JH102011810227JH1000C11910032103*9.5JH098511998.529104*8.5JH0985B12098.529104*8.5JH09901209928105*8.5JH101012010129JH1040B12110422JH103012210332JH1040C122.510422.5JH1030B122.510332JH1040D12510428110*8.5JH107012510724110*8.5JH11
9、0012711032110*9JH1100B12811032113*9.2JH111012811122JH1130131.511329.4115*9.5JH109013210931115*9.5JH1090B13210932115*9.5JH1250136.512532JH114013711431JH115013711531JH116013811632123.5*9.5JH117013811732123.5*9.5JH120013912032123.5*9.5JH1265139126.526.8JH1185139.5118.528124*8.5JH121014012130JH1200B1401
10、2032JH1170B14011728122.5*8.4JH1170C14011729124*8.7JH119014011928JH1200C14112032JH124014112422JH127014112725.4130*6.3JH1270B14112729125*8.3JH1200D14212038JH125014412532128.5*9.5JH126014612632130*9.5JH1270C14612732130*9.5JH130015013032JH1300B15113033JH1300C15213032JH1300D15213038.5JH137015313730JH1400
11、15514025JH1355154.5135.528139*8.3JH143015714325.4142*6.2JH1430B15714327145*6.3JH1430C16014327145.7*8.3JH1400B16014033JH147016714728154*8.5JH150016715028154*8.5JH146016814634150*10JH1460B16814638JH154016815427150*6.5JH1540B16815425.4154*6.3JH1540C16915422158*7JH148017014831155*9.3JH1540D17015421158*7JH1500B17115032155*9.3JH1520171.515232JH1530171.515328157*8.3JH1460C17214638147.3*12.7JH1500C17215040151*11.2JH1540E173.515432JH1460D17514638JH157017715738JH1540F17815434JH15
