Question
Download Solution PDFWhich of the following component need hand lapping?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Lapping:
- It is an abrading process for refining surface finish and the geometrical accuracy of flat cylindrical and spherical surfaces
- It is a process or removing surface roughness, tool marks, surface cracks from grinding, slight distortions and other minor – defects from previous operations
- Lapping produces geometrically true surfaces, corrects minor surface imperfections, improves dimensional accuracy and provides a very close fit between two contact surfaces
Hand Lapping
Hand lapping operations can be divided into:
- lapping flat surfaces
- lapping internal cylindrical surfaces
- lapping external cylindrical surfaces
Machine Lapping
Hand lapping is useful for lapping a few components only. For batch production lapping work, lapping machines are used.
There are three types of lapping machines commonly used ae as follows:
- Bonded abrasive circular plate lapping machine for flat and circular components
- Bonded abrasive or cast iron wheel machines for centerless lapping
- Internal cylindrical lapping machines
Press work dies are mot manufacturers in mass production, therefore hand lapping is used in it.
Last updated on Jul 11, 2025
-> All the aspiring candidates who wish to sit for the online examination scheduled for 15th July 2025, can download the ALP CBAT Admit Card using the direct link provided in the article.
-> RRB ALP Exam Date OUT. Railway Recruitment Board scheduled the RRB ALP Computer-based exam for 15th July 2025. Candidates can check out the Exam schedule PDF in the article.
-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> Bihar Home Guard Result 2025 has been released on the official website.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here