The basic design self-aligning ball bearing is available with a cylindrical bore or, in certain size ranges, with a tapered bore (taper 1:12).
自调心球轴承的基本设计带有一圆柱孔，或者在某些尺寸范围内带一圆锥孔（圆锥1：12）。
Cylindrical bore bearing is usually installed with heat, reduce the use of interference fit bearing clearance, or achieving the purpose of pretension.
圆柱孔轴承通常采用热装，利用过盈配合减小轴承游隙，或者达到预紧的目的。
When it comes to the monospaced chamfer at intersection line of orthogonal cylinder and cylindrical bore, however, no mature manufacturing method has been found yet.
圆柱体与孔正交相贯线处的等宽倒角，现今还没有成熟的加工方法。
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