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TBI滚珠丝杆SFV03220

产品规格：SFV03220产品类别：SFVR重载系列

本公司代理销售台湾上银品牌台湾TBI品牌
主要销售产品：上银直线导轨 TBI滚珠丝杆 KK模组
本公司同时也销售进口品牌直线导轨滚珠丝杆轴承等自动化等传动设备
主要销售品牌有：TBI ABBA HIWIN NSK THK SUROPA CPC SBC 等

东莞君誉传动科技有限公司：我们只负责销售国外进口产品，从不山寨！原装进口，假一赔十。

滚珠丝杆选型

滚珠丝杆按螺母长度分有单螺母和双螺母（注意，单螺母和双螺母没有负载和刚性差异，这一点不要听从厂家销售人员的演说，单螺母和双螺母的主要差异是后者可以调整预压而前者不能，另外后者的价格和长度大致均是前者的2倍）。
不过请注意，两种制造方式与精度、性能没有逆向必然性，也就是说如果你选用的精度是C7，那么与它是怎么制造出来的无关。

改善的要点有三个：1--轴承选用调心球或调心滚子轴水环式真空泵承；2--设计时有效螺纹与安装轴承的外径变化处留出一点弧角（直径变化比较大的情况）或越程槽设计成半圆槽；3--轴承安装外圆面加工时必须研磨。
如有滚珠意外掉落的情况，应通知供应商协助安装。

　　2---导程。

　　2---安装快装视镜方式。
等越高螺母与螺杆配合越紧，等级越低越松。
不过有利就有弊，根据我多年记录，大多数安装端（动力输入端）断裂的案例大部分出自这种安装方式。

　　多功能搅拌机4---螺母形式。
特别需要注意的是，精度和价格关联性很大，并且，精度的概念是组合和维持，也就是说，螺杆的导程误差不能说明整套丝杠的误差，出厂精度合格不能说明额定使用寿命内都维持这个精度。
解释一下固定、支持和自由的含义：固定---轴向和径向全面限制，圆周向自由。
长度有两个概念，一个是全长，另一个是螺纹长度。
而第3种安装方式却不然，支撑点只有一个，当径向力出现在悬臂梁的顶端（安装端的反方向），断裂或刚性变形就不可避免。
而磨制可以成产出更高精度的产品。
又比如水平安装，长径比是否合适转速是否在允许的DN值以内总而言之，安装条件确定安装方式。
推荐：直径尽量选16~63。
推荐：频繁动作、高精度维持场合选双螺母，其他场合选双且边单螺母。
固定---自由的安装方式适合很多场合，优点是不必考虑温升影响并且安装方便。
推荐：长度尽量选6米以下，超过的用齿轮齿条更划算了。后者也称研磨制造。
这里只说明两个概念：动额定负荷与静额定负荷，前者指运动状态下的额定轴向负载，后者是指静止状态下的额定轴向负载。以上说的都是主要参数，在选用型平刀圈号时还得用到以下参数：珠卷数，珠径，制造方式代码，预压等级等。
在设计绘图时，丝杠的全长大致可以按照一下参数累加：丝杠全长=有效行程+螺母长度+设计余量+两端支撑长度（轴承宽度+锁紧螺母宽度+裕量）+动力输入连接长度（如果使用联轴器则大致是联轴器长度的一般+裕量）。所以，同精度产品如果该可以买到轧制品就不要买磨制品，原因很简单：便宜。在安装尺寸和性能允许的情况下，设计者在选用时应尽量选择常规形式，以避免维护时备件的货期问题。需要注意的是，额定负荷并非最大负荷，实际负荷与额定负荷的比值越小，丝杠的理论寿命越高。当然不是说国内厂家就不能生产更长的，只是定制品的价格比较离谱。

制造方式：滚珠丝杠的制造方式主要是两种：轧制和磨制，前者也称滚轧制造或转造，一般用F表示。遵循的原则是：大直径、双螺母、高精度、驱动力矩较大的情况下预压等级可以选高一点，反之选低一点。公称直径和负载基本成正比，直径越大的负载越大，具体数值可以查阅厂家产品样本。

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