$(function() { var sWidth = $("#focus").width(); //获取焦点图的宽度(显示面积) var len = $("#focus ul li").length; //获取焦点图个数 var index = 0; var picTimer; //以下代码添加数字按钮和按钮后的半透明条,还有上一页、下一页两个按钮 var btn = "
"; for(var i=0; i < len; i++) { btn += ""; } btn += "
"; $("#focus").append(btn); $("#focus .btnBg").css("opacity",0.5); //为小按钮添加鼠标滑入事件,以显示相应的内容 $("#focus .btn span").css("opacity",0.4).mouseenter(function() { index = $("#focus .btn span").index(this); showPics(index); }).eq(0).trigger("mouseenter"); //上一页、下一页按钮透明度处理 $("#focus .preNext").css("opacity",0.2).hover(function() { $(this).stop(true,false).animate({"opacity":"0.5"},300); },function() { $(this).stop(true,false).animate({"opacity":"0.2"},300); }); //上一页按钮 $("#focus .pre").click(function() { index -= 1; if(index == -1) {index = len - 1;} showPics(index); }); //下一页按钮 $("#focus .next").click(function() { index += 1; if(index == len) {index = 0;} showPics(index); }); //本例为左右滚动,即所有li元素都是在同一排向左浮动,所以这里需要计算出外围ul元素的宽度 $("#focus ul").css("width",sWidth * (len)); //鼠标滑上焦点图时停止自动播放,滑出时开始自动播放 $("#focus").hover(function() { clearInterval(picTimer); },function() { picTimer = setInterval(function() { showPics(index); index++; if(index == len) {index = 0;} },4000); //此4000代表自动播放的间隔,单位:毫秒 }).trigger("mouseleave"); //显示图片函数,根据接收的index值显示相应的内容 function showPics(index) { //普通切换 var nowLeft = -index*sWidth; //根据index值计算ul元素的left值 $("#focus ul").stop(true,false).animate({"left":nowLeft},300); //通过animate()调整ul元素滚动到计算出的position //$("#focus .btn span").removeClass("on").eq(index).addClass("on"); //为当前的按钮切换到选中的效果 $("#focus .btn span").stop(true,false).animate({"opacity":"0.4"},300).eq(index).stop(true,false).animate({"opacity":"1"},300); //为当前的按钮切换到选中的效果 } });
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Slewing Bearings


1. Photo:
2. Category:
• Four-point contact ball slewing bearing
• Double-row  four-point contact ball bearing
• Crossed cylindrical roller slewing bearing
• Crossed tapered roller slewing bearing
• Three-row cylindrical roller slewing bearing
 
3. Specification:
The dimension range of slewing bearings that we can manufacture is inner diameter ≥ 80mm, and outer diameter ≤ 6070mm.
 
4. Cages:
The cages of DES slewing bearings have different structures such as whole type, sectional type and separate type. Among which cages of whole type and sectional type are made of #20 steel or ZL102 aluminum casting alloys. Cages of separate type are made of polyamide resin 1010 ZL102 aluminum casting alloy or QA110-3-1.5 aluminum bronze. In present years with the development of material industry, Nylon GRPA66.25 is also widely used to produce sectional cages.
 
5. Applications:
Slewing bearings are widely used in the slewer of Hoisting and Conveying Machinery, mining machines, constructional machines, harbour machines, wind power generation machines, armarium, radar and missile launcher.