BIS CERTIFICATION FOR THICK-WALLED PLAIN BEARINGS (FLANGE TYPE) IS 14478

Published Date: Oct 16, 2025 4 min Read

BIS certification is mandatory for Thick-Walled Plain Bearings (Flange Type) as per IS 14478:1997. This standard ensures that flange-type plain bearings, which are designed to support heavy loads and provide stable alignment in rotating machinery, are manufactured with the required strength, precision, and durability. Since these bearings are critical in automotive, industrial, and engineering applications, their quality directly impacts safety, efficiency, and operational reliability. Certification under IS 14478:1997 confirms that bearings meet stringent requirements for material properties, dimensional tolerances, surface finish, and performance, offering assurance of reliability to manufacturers, users, and industries.

IS 14478:1997 – Thick-Walled Plain Bearings (Flange Type)

This Indian Standard specifies the requirements for thick-walled plain bearings with a flange design, manufactured as full round components without any joint or slit. Flanged bearings provide additional axial support and accurate positioning of shafts, making them especially suitable for applications where both radial and axial loads are encountered. The standard outlines requirements for the raw material, ensuring that the bearing has adequate hardness, toughness, and wear resistance to withstand continuous operation under load. It prescribes dimensional tolerances and roundness requirements to guarantee accurate fitting and smooth interaction with mating parts. Surface finish parameters are also specified to minimize friction and extend service life. IS 14478:1997 includes detailed inspection and testing procedures such as hardness testing, dimensional verification, and structural checks for defects like cracks or porosity. It further defines guidelines for manufacturing processes, ensuring uniformity, reliability, and defect-free production. Marking requirements ensure proper identification and traceability, enabling manufacturers to maintain consistent quality across production batches.

Benefits of BIS Certification for Ring Type Needle Bearings

BIS certification under IS 14478:1997 provides confidence in the quality and reliability of flange-type bearings. For manufacturers, it ensures compliance with regulatory requirements, enhances credibility in domestic and global markets, and demonstrates a strong commitment to quality assurance. Certification also improves market competitiveness by signaling adherence to recognized standards. For industries and users, certified flange-type bearings deliver multiple benefits, including reliable performance under both radial and axial loads, reduced risk of equipment downtime, and longer operational life of machinery. Since these bearings are often deployed in automotive engines, gearboxes, compressors, and heavy machinery, certification helps prevent premature failures, costly repairs, and operational hazards. Additionally, BIS certification assures uniformity in supply chains by eliminating substandard or counterfeit products, thereby protecting end-users and industries from potential risks. Certified bearings promote efficiency, safety, and durability in high-demand mechanical systems.

Key highlights

Product Name	Plain Bearings-Thick-Walled Bushes, Plain and Flange Type, Full Round (Without any Joint or Slit)
Applicable Indian Standard	IS 14478:1997
Applicable Certification Scheme	Product Certification Scheme (ISI Mark Scheme) Scheme 1 - Schedule 2
Compliance Requirement	Mandatory
Quality Control Order	-
Scope as per Standard	This standard specifies dimensions and other requirements of 'Plain bearings — Thick-walled bushes, plain and flange type, full round.

Note

For Detailed Information about the Procedure for BIS ISI Certification, Visit :

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Procedure for Domestic Manufacturer
Procedure for Foreign Manufacturer

Timeline for BIS Certification

The timeframe for obtaining BIS certification depends on whether the manufacturer is Indian or foreign:

For Indian Manufacturers (Standard Timeframe – 30 days)
For Foreign Manufacturers (Standard Timeframe – 180 days)

Conclusion

BIS certification under IS 14478:1997 is essential for ensuring the strength, durability, and reliability of thick-walled plain bearings of the flange type. By adhering to this standard, manufacturers provide assurance of precision, quality, and compliance with stringent safety requirements. Certified flange-type bearings guarantee smooth operation, extended service life, and enhanced performance in critical industrial and automotive applications.
Partner with Aleph INDIA for expert assistance and end-to-end support in obtaining BIS certification for Thick-Walled Plain Bearings (Flange Type) under IS 14478:1997, ensuring compliance, trust, and seamless acceptance in both domestic and international markets.