The holes for the bolts in the sole plate of bearings are elongated towards the width, to facilitate:
Show Hint
- any misalignment while fitting.
- larger bolts than recommended.
- axial upliftment of bolt.
- to reduce the cost.
The Correct Option is A
Solution and Explanation
The sole plate of a bearing (such as a Plummer Block or Bush Bearing) is the flat bottom plate that rests on the foundation or frame. It contains holes to secure the bearing housing using foundation bolts.
Step 2: Why are Bolt Holes Elongated (Slotted)?
In practice, aligning foundation bolts precisely with the holes in machine castings can be difficult due to manufacturing tolerances and alignment errors.
Step 3: Role of Elongation:
By elongating the holes in the sole plate perpendicular to the shaft axis (towards the width), we allow the entire bearing assembly to be adjusted slightly sideways (laterally) during installation. This effectively accommodates any misalignment while fitting. Therefore, option (A) is correct.
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