A pillow block refers to any mounted bearing wherein the mounted shaft is in a parallel plane to the mounting surface, and perpendicular to the center line of the mounting holes, as contrasted with various types of flange blocks or flange units. A pillow block may contain a bearing with one of several types of rolling elements, including ball, cylindrical roller, spherical roller, tapered roller, or metallic or synthetic bushing. The type of rolling element defines the type of pillow block. These differ from "plummer blocks" which are bearing housings supplied without any bearings and are usually meant for higher load ratings and a separately installed bearing.
The fundamental application of both types is the same, which is to mount a bearing safely enabling its outer ring to be stationary while allowing rotation of the inner ring. The housing is bolted to a foundation through the holes in the base. Bearing housings may be either split type or solid type. Split type housings are usually two-piece housings where the cap and base may be detached, while others may be single-piece housings. Various sealing arrangements may be provided to prevent dust and other contaminants from entering the housing. Thus the housing provides a clean environment for the environmentally sensitive bearing to rotate free from contaminants while also retaining lubrication, either oil or grease, hence increasing its performance and duty cycle.
Bearing housings are usually made of grey cast iron. However, various grades of metals can be used to manufacture the same, including ductile iron, steel, stainless steel, and various types of thermoplastics and polyethylene-based plastics.
https://en.wikipedia.org/wiki/Pillow_block_bearing
2020
http://australianmanufacturingnews.com/plummer-block-technology-extends-life-of-key-bearings-by-50-per-cent/
https://www.svinod.in/plummer-blocks.html
https://jaycohousing.com/
https://en.wikipedia.org/wiki/Pillow_block_bearing
2019
Modelling, Analysis and Fabrication of Bush
Bearing on Plummer Block by Using Carbon
Epoxy Material
International Journal of Innovative Technology and Exploring Engineering (IJITEE)
ISSN: 2278-3075, Volume-8 Issue-4S2 March, 2019
https://www.ijitee.org/wp-content/uploads/papers/v8i4s2/D1S0061028419.pdf
2018
https://www.manufacturingtodayindia.com/into-new-territory
2016
https://www.researchgate.net/publication/306170600_Optimized_Design_and_Fabrication_of_Pedestal_Bearing
https://books.google.co.in/books?id=FDIfTrE3BjUC&pg=PA150#v=onepage&q&f=false
1957
https://patents.google.com/patent/US2952898A/en
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