av无码人妻无码男人的天堂,最近2019中文字幕mv免费看,边吸奶边扎下面很爽,久久男人av资源站,抓住我的双乳咬我奶头视频看,秋霞鲁丝片av无码,无码国产精品一区二区免费3p,gogogo高清在线观看视频电影,日本少妇高潮喷水视频,日本在线视频

<center id="q2quk"><option id="q2quk"></option></center>
  • <center id="q2quk"><table id="q2quk"></table></center>
  • <s id="q2quk"></s>
    <nav id="q2quk"><source id="q2quk"></source></nav>

    Type a triangle

    Rubber products > Triangle belt > Type a triangle

    Type a triangle

    V-belt is composed of wrapping cloth, top cloth, top rubber, buffer rubber, tensile body, bottom rubber, bottom rubber clip cloth, bottom cloth, etc

    A1550Naming of V-belt: take a1550 as an example, a as model, reference length 1550mm, and its name is a1550

    A - model a

    1550 - with reference length of 1550mm

    Length can be negotiated by both parties


    Belt type

    Upper width

    height

    angle

    marking length

    Common triangle

    Z

    10

    6

    40

    Li(Inner circumference)

    A

    13

    8

    40

    Li(Inner circumference)

    B

    17

    11

    40

    Li(Inner circumference)

    C

    22

    14

    40

    Li(Inner circumference)

    D

    32

    20

    40

    Li(Inner circumference)

    Narrow V band

    SPZ

    10

    8

    40

    LD(Pitch line length)

    SPA

    13

    11

    40

    LD(Pitch line length)

    SPB

    17

    14

    40

    LD(Pitch line length)

    SPC

    22

    18

    40

    LD(Pitch line length)

    9N(3V)

    9.7

    8

    40

    La(Circumference)

    15N(5V)

    16

    13.5

    40

    La(Circumference)

    25N(8V)

    25.5

    23

    40

    La(Circumference)

    Selection method of V-belt

       1 The selected model shall be suitable for the selected V-belt, otherwise the V-belt will be abnormal in the pulley groove. When replacing V-belt, bring the old one to the agricultural machinery department for purchase to prevent the wrong model.

       2 Before the correct installation, install the V-belt and a group of V-belts in the same way.

       3 When installing the pulley in series, the centers of the two upper pulleys must be aligned, otherwise, the V-belt will work unilaterally, wear seriously, and reduce the service life of the V-belt.

       4 The proper tightness of V-belt must be checked and adjusted frequently to make it meet the requirements. Too loose V-belt is not only easy to slip, but also increases the wear of V-belt, even unable to transmit power. Too tight V-belt will not only elongate, deform and damage the V-belt, but also cause the main bearing and clutch bearing of the engine to suffer too much force, which will accelerate the wear of V-belt. The correct inspection method is: use your hand in the middle of each tape, apply a vertical pressure of about 2kg, and it is appropriate to sink 20-30mm, and adjust it in time if it is not suitable.

       5 When there are two or more V-belts to be replaced, the V-belts of the specified model shall be selected, and the tightness of each group of V-belts shall be the same.

       6 To prevent contamination, oil and muddy water in V-belt shall be strictly prevented, and contact with corrosive substances such as acid and alkali shall be avoided, so as to prevent slipping and early damage caused by corrosion of V-belt.

       7 The operators and users of the daily maintenance machine should master the correct operation essentials in the normal driving, and try to avoid sudden starting and sudden braking according to the technical requirements of the operation manual; also, it should prevent frequent overload operation; when the machine is out of service for a long time, the V-belt should be removed and stored separately.




    亚洲国产精品久久久久国产精品| 欧美日韩一区二区三区视频播放 | 国产剧情国产精品一区| a级黄韩国电影免费| 国产性色强伦免费视频| 精品日韩亚洲AV无码一区二区三区| 性天堂av系列| 狠狠色噜噜狠狠狠7777米奇| 午夜av日韩在线观看| 四川少妇bbw搡bbbb槡bbbb| 天天躁日日躁狠狠躁AV| 亚洲专区 国产精品| 天天摸天天摸天天天天看| 国内精品人妻久久毛片APP| 久热爱精品视频线路一| 99久久国产综合精品麻豆导演| 人与禽性视频77777| 精品久久久久久久久999| 欧美《熟妇的荡欲》在线观看| 久久精品66免费99精品| 精品人妻一区二区三区四区久久| 日韩在线电影一区两区| 亚洲成AV人电影在线观看| 亚洲国产精品无码久久久不卡| 色噜噜日韩精品欧美一区二区| 免费人妻无码不卡中文字幕18禁 | 亚洲欧美成人综合久久久| 午夜大片免费男女爽爽影院| 欧美18videosex性欧美tube| 亚洲伊人成综合人影院 | 中文字幕精品AV一区二区五区| 黄网站色成年片大免费| 人人澡人人看人人妻| 在线手机视频免费视频| 国产乱码一卡2卡三卡四卡| 在线综合亚洲欧美网站| 久久热这里有精品| 别揉我奶头~嗯~啊~视频| 天堂网在线最新版资源www| 不卡一区二区三区av电影| 亚洲成在人网站无码天堂|