BIS Certification Consultancy for Short-Pitch Transmission Roller & Bush Chains | IS 2403:2014 / ISO 606:2004

Introduction

Short-pitch transmission precision roller and bush chains are important mechanical power-transmission components used in industrial machinery, conveyors, material-handling equipment, agricultural machinery and other mechanical systems. Their dimensional accuracy, tensile strength, length validation, assembly quality and performance are important for reliable power transmission.

In India, IS 2403:2014 / ISO 606:2004 – Short-Pitch Transmission Precision Roller and Bush Chains, Attachments and Associated Chain Sprockets specifies requirements for these products. The BIS Product Manual provides certification guidance under Scheme-I of the BIS Conformity Assessment Regulations, 2018 and can also be used by prospective manufacturers seeking a BIS certification licence.

These products are covered under the Precision Roller and Bush Chains, Attachments and Associated Chains Sprockets (Quality Control) Order, 2024. The QCO requires covered products to conform to the applicable Indian Standard and bear the Standard Mark under a BIS licence according to Scheme-I. The implementation dates are 1 October 2024 for general manufacturers, 1 January 2025 for small enterprises and 1 April 2025 for micro enterprises.

Qualitance India provides end-to-end BIS Certification Consultancy for Short-Pitch Transmission Precision Roller and Bush Chains as per IS 2403:2014 / ISO 606:2004, including product scope assessment, product grouping, documentation, sample preparation guidance, laboratory testing coordination, BIS application support and factory inspection preparation.

What is IS 2403:2014 / ISO 606:2004?

IS 2403:2014 / ISO 606:2004 is titled:

“Short-Pitch Transmission Precision Roller and Bush Chains, Attachments and Associated Chain Sprockets”

The BIS Product Manual identifies the standard as IS 2403:2014 / ISO 606:2004 and provides certification guidance for:

Short-Pitch Transmission Precision Roller Chains
Bush Chains
Attachments
Associated Chain Sprockets

The standard and Product Manual cover important requirements relating to:

Dimensions
Chain identification
Tensile strength
Preloading
Length validation
Dynamic testing
Attachments
Chain sprockets
Marking
Quality-control testing

What are Short-Pitch Transmission Roller and Bush Chains?

Roller and bush chains are mechanical chains designed to transmit power and motion between rotating components.

A typical roller or bush chain assembly consists of components such as:

Inner plates
Outer plates
Pins
Bushes
Rollers, where applicable
Connecting links
Attachments, where applicable

These chains are used where precise mechanical transmission and controlled chain movement are required.

The applicable product configuration should be identified according to the relevant ISO chain number, chain assembly type and attachment arrangement.

Product Categories Covered Under IS 2403:2014

The BIS Product Manual groups the products into three major areas:

Chains

Chains are designated by ISO Chain Number and include:

Table 1
Table 2 – ANSI heavy series

The chain assembly may be:

Simplex
Duplex
Triplex

Attachments

The Product Manual identifies:

K Attachments

M Attachments

Extended Pins

Type X
Type Y

Chain Sprockets

Chain sprockets are grouped according to:

Even number of teeth
Odd number of teeth

Scope of IS 2403:2014

The BIS licence scope can be defined using parameters such as:

Product category
ISO Chain Number
Chain type
Attachment type
Sprocket configuration

The Product Manual specifically states that the licence scope is granted for:

Short-Pitch Transmission Precision Roller and Bush Chains / Attachments / Chain Sprockets

along with the applicable ISO Chain Number and Type.

Correct scope planning is important because product grouping and laboratory testing depend on the proposed varieties intended to be included in the BIS licence.

Is BIS Certification Mandatory for Roller and Bush Chains?

Yes. Short-Pitch Transmission Precision Roller and Bush Chains, Attachments and Associated Chain Sprockets are covered under the applicable BIS compulsory certification framework.

The Precision Roller and Bush Chains, Attachments and Associated Chains Sprockets (Quality Control) Order, 2024 specifically covers these products under:

IS 2403:2014 / ISO 606:2004

The QCO requires the listed products to conform to the corresponding Indian Standard and bear the Standard Mark under a BIS licence according to Scheme-I.

The current BIS Scheme-I listing also identifies IS 2403:2014 / ISO 606:2004 under the Precision Roller and Bush Chains category.

Precision Roller and Bush Chains QCO 2024

The Precision Roller and Bush Chains, Attachments and Associated Chains Sprockets (Quality Control) Order, 2024 superseded the earlier 2023 order.

The current QCO provides the following implementation schedule:

Manufacturer Category	Implementation Date
General Manufacturers other than Micro & Small Enterprises	1 October 2024
Small Enterprises	1 January 2025
Micro Enterprises	1 April 2025

The QCO also states that the latest version of the applicable Indian Standard, including amendments notified by BIS from time to time, shall apply. It further provides that the order does not apply to goods manufactured domestically for export.

Who Needs BIS Certification for Roller and Bush Chains?

BIS certification is relevant to manufacturers producing covered chains, attachments and associated chain sprockets.

This can include:

Roller Chain Manufacturers
Bush Chain Manufacturers
Industrial Chain Manufacturers
Transmission Chain Manufacturers
Power Transmission Component Manufacturers
Conveyor Chain Manufacturers
Machinery Component Manufacturers
Chain Sprocket Manufacturers
Attachment Manufacturers
OEM Manufacturers
Contract Manufacturers

Importers and businesses dealing with these products should also verify their obligations under the applicable QCO and BIS framework.

BIS Certification Eligibility Requirements

A manufacturer applying for BIS certification should have suitable manufacturing and quality-control arrangements.

These may include:

Manufacturing premises
Chain manufacturing machinery
Heat-treatment facilities
Machining facilities
Assembly facilities
Product drawings
Chain specifications
Raw-material control
Manufacturing process controls
Testing and measuring equipment
Calibration arrangements
Quality-control personnel
Inspection procedures
Production records
Testing records
Product identification system
BIS marking arrangements

The exact requirements depend on the product category, ISO chain number, type and proposed licence scope.

BIS Certification Process for Roller and Bush Chains

Step 1 – Product Applicability Assessment

The product is first reviewed against IS 2403:2014 / ISO 606:2004.

The assessment includes:

Product category
ISO Chain Number
Chain type
Attachment type
Sprocket configuration
Manufacturing process
Intended licence scope

Step 2 – Product Scope Finalisation

The manufacturer declares the varieties intended to be included in the BIS licence.

The BIS Product Manual specifically provides grouping guidance based on chain number, chain assembly type, attachment type and sprocket tooth configuration.

Step 3 – Product Grouping

Grouping should be finalised before sample testing.

For chains, the Product Manual provides grouping based on the highest tensile-strength chain from the applicable ISO chain tables. It also gives separate grouping provisions for attachments and sprockets.

Step 4 – Documentation Preparation

Technical, factory and quality-control documents are prepared.

Step 5 – Sample Preparation

The BIS Product Manual specifies a sample size of:

2 Nos.

One sample is lubricated and one sample is without lubrication for the length validation test.

Step 6 – Laboratory Testing

The samples are tested against the applicable requirements of IS 2403:2014 / ISO 606:2004.

Step 7 – BIS Application

The manufacturer submits the BIS application with the required technical and factory documentation.

Step 8 – Factory Assessment

BIS assesses the manufacturing facility, machinery, testing laboratory and quality-control system.

Step 9 – Observation Closure

If BIS raises observations, the manufacturer completes corrective actions and submits the required evidence.

Step 10 – BIS Licence Grant

After successful conformity assessment, BIS grants the licence for the approved scope.

Step 11 – ISI Marking

The manufacturer can mark products covered by the BIS licence according to applicable BIS Standard Mark requirements.

Testing Requirements for Roller and Bush Chains

Testing is an important part of BIS certification for transmission chains.

The BIS Product Manual identifies major testing areas including:

Dimensions

Dimensions are checked against the applicable tables and figures.

The Product Manual identifies equipment such as:

Micrometer
Vernier caliper
Steel scale
Radius gauges
Pitch gauges

Tensile Testing

Tensile strength is evaluated according to the applicable chain requirements.

The Product Manual identifies a Universal Testing Machine for tensile testing.

Preloading

Preloading is another applicable chain test.

The BIS Product Manual specifies this as part of the inspection and testing scheme.

Length Validation

Length validation checks the change in length of the chain under the specified test conditions.

The Product Manual requires a suitable Universal Testing Machine arrangement for measuring the change in length.

Dynamic Testing

Dynamic testing may be required according to the applicable provisions of IS 2403 and IS 15790.

The Product Manual identifies suitable arrangements according to IS 15790 for this test.

Attachment Dimensions

Dimensions of K, M and extended-pin attachments are checked according to the applicable tables.

Chain Sprocket Dimensions

Applicable sprocket dimensions are also covered by the certification framework.

Product Grouping for Chains

Product grouping is one of the most important parts of BIS certification for roller and bush chains.

The BIS Product Manual identifies:

Chain Grouping

Chains are designated by ISO Chain Number and divided into:

Table 1
Table 2 – ANSI heavy series

Chain assembly types include:

Simplex
Duplex
Triplex

For grouping purposes, the Product Manual states that a sample having the highest tensile strength from any ISO chain number from each table can be used to cover chains of all tensile strengths for the ISO chain numbers in that table.

If a triplex chain is tested, duplex and simplex chains may also be covered, subject to the stated grouping conditions.

For certain chain numbers such as 081, 083, 084 and 085, the grouping is restricted to simplex chain where the specified condition applies.

Grouping for Attachments

The Product Manual identifies three attachment categories:

K Attachments
M Attachments
Extended Pins

One sample of an attachment from each type can cover the applicable sub-types for the relevant ISO chain numbers, subject to the grouping requirements.

Grouping for Chain Sprockets

Chain sprockets are grouped into:

Even number of teeth
Odd number of teeth

The Product Manual states that one sample of chain sprocket from the applicable category can cover the varieties within the grouping requirements.

BIS Factory Inspection for Roller and Bush Chains

Factory assessment is an important part of BIS certification under Scheme-I.

During factory inspection, BIS may assess:

Manufacturing Machinery

Machinery used for:

Plate manufacturing
Pin and bush production
Roller manufacturing
Chain assembly
Heat treatment
Finishing
Sprocket manufacturing

Raw Material Storage

Proper identification, storage and traceability of raw materials.

Manufacturing Process

Controls maintained throughout chain and sprocket manufacturing.

Testing Laboratory

The BIS Product Manual requires a suitably equipped laboratory where applicable tests can be carried out according to the standard.

Calibration

The manufacturer must prepare a calibration plan for test equipment.

Quality Control

Incoming, in-process and final inspection procedures should be implemented.

Test Records

The manufacturer must maintain records for tests carried out to demonstrate conformity.

Testing Equipment for IS 2403:2014

The BIS Product Manual identifies major equipment such as:

Micrometer
Vernier caliper
Steel scale
Radius gauges
Pitch gauges
Universal Testing Machine
Suitable length-validation arrangement
Dynamic testing arrangement as per IS 15790

The Product Manual states that the equipment list is indicative and should not be treated as exhaustive.

Scheme of Inspection and Testing

The BIS Product Manual specifies a Scheme of Inspection and Testing for roller and bush chains, attachments and chain sprockets.

The manufacturer is required to maintain:

Suitable laboratory facilities
Calibration plan
Test records
Control units
Routine testing
Marking arrangements
Control over non-conforming products

The control unit is defined as:

The entire quantity of chains, attachments or sprockets of the same ISO Chain Number and type manufactured in a day.

Routine Inspection and Testing Requirements

The Product Manual specifies routine controls for chains.

Dimensions

Five samples are required every four hours of production of the components on each machine.

Tensile Testing

One sample is required from every heat-treatment batch.

Preloading

Preloading is applicable to all chains as specified in the inspection scheme.

Length Validation

Two samples are required once per eight-hour shift.

Dynamic Testing

One chain is subject to dynamic testing once a year under the Product Manual's scheme.

Attachments

Five attachment samples are tested every four hours according to the applicable requirements.

Chain Sprockets

Five chain sprocket samples are tested every four hours according to the specified inspection scheme.

Marking Requirements

Marking is an important part of BIS compliance.

The BIS Product Manual requires labelling and marking according to IS 2403:2014.

All production conforming to the Indian Standard and covered by the licence should bear the BIS Standard Mark according to the applicable requirements.

Manufacturers should ensure that product identification allows traceability of the applicable ISO Chain Number and product type.

Documents Required for BIS Certification

Typical documents may include:

Company registration documents
Factory address proof
Factory layout
Manufacturing process flow chart
Machinery list
Product drawings
Chain specifications
ISO Chain Number details
Product type details
Attachment details
Sprocket details
Raw-material specifications
Material test certificates
Supplier details
Testing equipment list
Calibration certificates
Quality-control plan
Inspection records
Production records
Test reports
Product photographs
Packing details
Marking details
Authorised signatory documents
Trademark documents, where applicable

The final document list depends on the applicant's manufacturing setup and intended BIS licence scope.

Raw Material Requirements

Raw-material control is an important part of transmission-chain manufacturing.

Manufacturers should maintain proper records for:

Material grade
Supplier details
Purchase records
Material test certificates
Incoming inspection
Heat-treatment records
Batch identification
Lot traceability

The manufacturer should ensure that the raw material and manufacturing process are suitable for achieving the mechanical and dimensional requirements of the applicable chain specification.

Manufacturing Process for Roller and Bush Chains

A typical manufacturing process may include:

Raw-material receiving
Material inspection
Plate preparation
Pin manufacturing
Bush manufacturing
Roller manufacturing
Heat treatment
Component finishing
Chain assembly
Preloading
Lubrication, where applicable
Length validation
Dimensional inspection
Tensile testing
Dynamic testing, where applicable
Final inspection
Packing
Marking

The exact manufacturing process can vary according to the chain type, ISO Chain Number, attachment configuration and production technology.

Common Reasons for BIS Certification Delays

Manufacturers may face delays because of:

Incorrect ISO Chain Number
Incorrect chain type
Incorrect product classification
Incorrect grouping
Incomplete technical drawings
Dimensional non-conformity
Tensile-strength failure
Length-validation failure
Preloading issues
Dynamic-test failure
Attachment dimensional defects
Sprocket dimensional non-conformity
Inadequate testing equipment
Missing calibration records
Incomplete production records
Incorrect sample selection
Factory not ready for assessment
Documentation deficiencies
Incorrect BIS marking

A detailed product-scope and factory assessment before submitting the BIS application can help reduce avoidable delays.

BIS Certification Cost for Roller and Bush Chains

There is no single fixed BIS certification cost applicable to every manufacturer.

The total cost can depend on:

BIS application fees
Laboratory testing charges
ISO Chain Number
Chain type
Attachments
Chain sprockets
Product grouping
Number of samples
Factory assessment
Testing equipment
Calibration
Documentation
Retesting, if required
Consultancy charges

BIS LIMS currently lists testing facilities and charges for IS 2403:2014. One current BIS laboratory listing shows a ₹10,000 testing charge entry for IS 2403:2014, while the current BIS laboratory database also contains detailed clause-wise testing entries.

These laboratory charges should not be considered the complete BIS certification cost because the overall project can include application, factory assessment, equipment, calibration, documentation and consultancy expenses.

For an accurate quotation, the manufacturer's ISO Chain Number, chain type, attachment and sprocket scope should be assessed first.

BIS Certification Timeline

The certification timeline can vary depending on:

Product category
ISO Chain Number
Chain type
Product grouping
Documentation readiness
Sample availability
Laboratory testing
Test results
BIS application scrutiny
Factory readiness
Factory assessment
Observation closure

Manufacturers can reduce unnecessary delays by finalising their licence scope, grouping, documentation and testing arrangements before submitting the application.

Benefits of BIS Certification for Roller and Bush Chains

Regulatory Compliance

Helps manufacturers meet applicable BIS and QCO requirements.

ISI Mark

Allows eligible manufacturers to use the BIS Standard Mark on products covered by the approved licence.

Reliable Power Transmission

Dimensional and mechanical requirements help support reliable chain operation.

Consistent Product Quality

Regular dimensional, tensile and performance testing supports production consistency.

Customer Confidence

BIS certification can strengthen confidence among machinery manufacturers and industrial buyers.

Market Acceptance

Certification supports legal market access where BIS certification is mandatory.

Better Quality Control

The inspection and testing framework encourages systematic manufacturing controls.

Business Credibility

A valid BIS licence can strengthen the manufacturer's position in the power-transmission and industrial-machinery market.

Why Choose Qualitance India?

Qualitance India provides professional BIS Certification Consultancy for manufacturers seeking BIS and ISI Mark certification.

For Short-Pitch Transmission Precision Roller and Bush Chains as per IS 2403:2014 / ISO 606:2004, our consultancy support can include:

Product applicability assessment
IS 2403:2014 requirement review
ISO Chain Number assessment
Chain type assessment
Attachment assessment
Sprocket assessment
Product grouping guidance
Documentation preparation
Sample selection guidance
Laboratory testing coordination
BIS application assistance
Factory inspection preparation
Testing equipment guidance
Quality-control documentation
Observation closure support
BIS licence assistance

Our support is designed to help manufacturers manage the certification process from product assessment and grouping through laboratory testing, BIS application, factory assessment and licence approval.

Contact Qualitance India

Phone: +91 93106 15170 Email: info@qualitanceindia.com Website: qualitanceindia.com

BIS Certification Process – Quick Flow

Product Identification ↓ IS 2403:2014 / ISO 606:2004 Requirement Review ↓ ISO Chain Number Assessment ↓ Chain / Attachment / Sprocket Type Assessment ↓ Product Grouping & Scope Finalisation ↓ Documentation Preparation ↓ Sample Preparation – 2 Nos. ↓ Laboratory Testing ↓ BIS Application ↓ Application Scrutiny ↓ Factory Assessment ↓ Observation Closure ↓ BIS Licence Grant ↓ ISI Mark on Approved Products

Frequently Asked Questions

1. What is IS 2403:2014?

IS 2403:2014 is the Indian Standard for Short-Pitch Transmission Precision Roller and Bush Chains, Attachments and Associated Chain Sprockets and is aligned with ISO 606:2004.

2. Is BIS certification mandatory for roller and bush chains?

Yes. The products covered by IS 2403:2014 / ISO 606:2004 are included in the applicable Precision Roller and Bush Chains, Attachments and Associated Chains Sprockets (Quality Control) Order, 2024.

3. What is the applicable BIS certification scheme?

Certification is operated under Scheme-I / ISI Mark Scheme.

4. What products are covered?

The certification framework covers:

Short-Pitch Transmission Precision Roller and Bush Chains
Attachments
Associated Chain Sprockets

5. What chain types are covered?

The Product Manual identifies:

Simplex
Duplex
Triplex

6. What attachments are covered?

The Product Manual identifies:

K1
K2
M1
M2
Extended Pin Type X
Extended Pin Type Y

7. What is the sample size for BIS certification?

The BIS Product Manual specifies 2 Nos., with one lubricated and one without lubrication for the length validation test.

8. What tests are required for roller chains?

Important tests include dimensions, tensile testing, preloading, length validation and dynamic testing, where applicable.

9. Is factory inspection required?

Yes. Factory assessment forms part of the BIS Scheme-I certification process.

10. What testing equipment is required?

The Product Manual identifies equipment such as micrometers, vernier calipers, steel scales, radius gauges, pitch gauges, Universal Testing Machines and arrangements for dynamic testing.

11. What is product grouping for IS 2403?

Grouping is based on ISO Chain Number, assembly type, attachment type and chain sprocket configuration.

12. What is the control unit under IS 2403?

The control unit is the entire quantity of chains, attachments or sprockets of the same ISO Chain Number and type manufactured in a day.

13. What are the QCO implementation dates?

The 2024 QCO specifies 1 October 2024 for general manufacturers, 1 January 2025 for small enterprises and 1 April 2025 for micro enterprises.

14. How much does BIS certification for roller chains cost?

The total cost depends on the product scope, ISO Chain Number, testing, BIS application, factory assessment, equipment, documentation and other expenses. Current BIS LIMS listings show testing charges for IS 2403:2014 depending on the laboratory and scope.

15. Can Qualitance India help with IS 2403:2014 certification?

Yes. Qualitance India provides support for product assessment, grouping, documentation, sample selection, laboratory testing coordination, BIS application and factory inspection preparation.

Related BIS Certification Services

BIS Certification for Chain Sprockets
BIS Certification for Industrial Chains
BIS Certification for Transmission Chains
BIS Certification for Conveyor Chains
BIS Certification for Mechanical Power Transmission Components
BIS Certification for Engineering Products
BIS & ISI Mark Certification
BIS Factory Inspection Assistance
BIS Testing Coordination
BIS Certification Consultancy

Conclusion

IS 2403:2014 / ISO 606:2004 – Short-Pitch Transmission Precision Roller and Bush Chains, Attachments and Associated Chain Sprockets establishes requirements for precision transmission chains, attachments and associated sprockets used in mechanical power-transmission applications. The BIS Product Manual identifies chains by ISO Chain Number and assembly type, along with K, M and extended-pin attachments and associated chain sprockets.

The product is covered under the Precision Roller and Bush Chains, Attachments and Associated Chains Sprockets (Quality Control) Order, 2024, which requires covered products to conform to the applicable Indian Standard and bear the Standard Mark under a BIS licence according to Scheme-I. The phased implementation dates are 1 October 2024 for general manufacturers, 1 January 2025 for small enterprises and 1 April 2025 for micro enterprises.

Manufacturers should therefore carefully finalise their ISO Chain Number, chain type, attachment configuration, sprocket scope, product grouping, testing facilities, calibration arrangements and quality-control system before applying for BIS certification.

Qualitance India provides end-to-end BIS Certification Consultancy for Short-Pitch Transmission Precision Roller and Bush Chains as per IS 2403:2014 / ISO 606:2004, including product assessment, scope and grouping guidance, documentation, sample preparation, laboratory testing coordination, BIS application support and factory inspection preparation.

For BIS Certification and ISI Mark Consultancy for Roller & Bush Chains, contact Qualitance India today.

Phone: +91 93106 15170 Email: info@qualitanceindia.com Website: qualitanceindia.com