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冲压外圈滚针轴承
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SLZ—冲压外圈滚针轴承是由薄壁外圈与保持架和滚针组成的轴承单元，主要特点 为以磨削轴作滚道，特别小的径向空间结构，具有成本低，且承受高负荷的能力。 使用非淬硬轴场合可选用IR或LR系列内圈；薄壁外圈需用刚性座以充分发挥其承载能力；安装十分便利。广泛用于汽车、摩托车等支承运转构件。 △结构形式 该类轴承有穿孔型和封孔型，适用轴径一般在φ6～φ60mm。并有多种唇密封 以防止污染物和水的侵入，供不同场合选择使用。 △产品精度 滚针直径相互差在2μm，精度等级为G2级（国标GB309）。 薄壁外圈受刚性轴承座精度影响。 可根据顾客特殊要求确定。 △材料 滚针材料为GCr15轴承钢。 冲压薄壁外圈和保持架材料为优质低碳钢。 △特殊说明 冲压外圈滚针轴承应使用装配心轴压入轴承座孔内。 装配心轴轴肩应于轴承标志面相接触。 安装过程中不得使轴承发生倾斜。 受润滑脂和密封件材料限制，运转温度-30℃—+100℃。 | |||||||||||||||||
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| GB/T290—1998滚动轴承 冲压外圈滚针轴承
外形尺寸（GB-12） GB/T12764—1991滚动轴承 冲压外圈滚针轴承 外形尺寸方案（GB-7） JB/T8878—2001滚动轴承 冲压外圈滚针轴承 技术条件（JB-12） | |||||||||||||||||
Needle Roller Bearing with Punched Outer RingNeedle roller bearing with punched outer ring is a bearing unit composed of thin-wall outer ring, cage and needle rollers. It is characterized by utilizing grinding axes as raceway with very small radial-space structure, low cost and capability of bearing heavy load. For un-quench hardening shaft, IR or LR series of inner ring can be adopted, and rigid base is required to be used for thin-wall outer ring so as to fully play its role in bearing capability. Being convenient for installation, it is widely used in the supporting and driving structures of auto, motorcycle and etc. Types of Designs: This kind of bearing has two types, one is punched-hole type, and the other sealed-hole type. Its suitable axial diameter is Φ6~Φ60mm. Multiple lip seal is available so as to prevent pollutant and water. It can be adopted for different occasions. Product Precision Accuracy:Mutual difference of needle rollers is 2μm, and the precision class is G2 (ISO GB309). Thin-wall outer ring is affected by the accuracy of rigid bearing bracket. It can also be defined according
to the special requirements of customers. Material for needle roller is GCr15 bearing steel. Material for cages and punched thin-wall outer ring can be quality low-carbon steel. Special Directions: Needle roller bearing with punched outer ring should be pressed into bearing bracket hole by assembling mandrel. Assembling mandrel shoulder needs to contact with bearing sign-face. Bearing can’t be tilted during installation. Limited by grease and sealing-element material, operation temperature is –300C---+1000C. Design for Shaft and Bearing Bracket:
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