Hello!!
I am a student and I want to know information about selective aseembly.
I would like to have knowledge about it.

Thank you in advance.

Hi. Welcome to the Cove, OAK-MS:bigwave:

There are several possible meanings for the term "selective assembly." Do you have some context of how you came across the term and what you intend to do with the information you find?

The more you can narrow the scope of your question, the less likely we will go off in the wrong direction with an answer.

I came across the term 'Sellective assembly' in industrial engineering.
And I know that the main advantage of sellective assembly is that higher precisioin assembly can be achieved by low precision parts.
I intend to study designing in consideration of sellective assembly.

Thank you in advance.

Hello!!
I am a student and I want to know information about selective aseembly.
I would like to have knowledge about it.
Thank you in advance.

Selective assembly in mechanical manufacturing is selecting the mating parts to achieve a certain clearance or interference during assembly. Selective assembly in hi-tech manufacturing area is to assemble parts with known values to obtain desired performance characteristics.

Selective assembly is an expensive process as it involves measurement of individual parts before assembly. Some cases it is inevitable as one need to rework a non-conformance assembly.

Opposite to this is “interchangeability”, Where the assembler picks any random part from the lot and assemble with a randomly picked mating part and the assembly meeting the specification for desired clearance, interference or performance characteristics. One of the objective of various Quality Improvement tools is to reduce variation in the manufacturing and achieve high degree of interchangeability.

Regards,
Govind.

Selective assembly is very common practice in bearing industry. To control radial or axial clearances of bearing assembly, you need to control diameters of rolling elements like ball or roller.
During finish grinding of rolling elements these are selected in 2 micron range so that one bearing will have all rollers or balls within that 2 micron tolerance so that clearance of assembled bearing is within specifications.

Arvind