IS 1281 : 2025 Bicycles - Cranks and Chain Wheels - Specification
1 SCOPE
This standard covers the requirements for cranks and chain wheels intended for the chain drive and fitted on the bottom bracket axle of bicycles.
2 REFERENCES
The standards listed in Annex A contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards.
| IS No. | Title |
| IS 734 : 1975 | Specification for wrought aluminium and aluminium alloy forging stock and forgings (for general engineering purposes) (second revision) |
| IS 1068 : 2025 | Metallic and other inorganic coatings- Electrodeposited coatings of nickel, nickel plus chromium, copper plus nickel and of copper plus nickel plus chromium (fourth revision) |
| IS 1570 (Part 1) : 1978 | Schedules for wrought steels: Part 1 Steels specified by tensile and/or yield properties (first revision) |
| IS 2062 : 2011 | Hot rolledmediumand high tensile structural steel - Specification (seventh revision) |
| IS 2403 : 2024 | Short-pitch transmission precision roller and bush chains, attachments and associated chain sprockets (fourth revision) |
| IS 3203 : 1982 | Methods for testing local thickness of electroplated coatings (first revision) |
| IS 10613 : 2023 | Cycles - Safety and performance requirements for bicycles (third revision) |
| IS 19034 : 2024 | BMX bicycles - Safety requirements and methods of test |
| IS 15533 : 2024/ISO 8098 : 2023 | Cycles - Safety requirements for bicycles for young children (second revision) |
| IS 19305 (Part 1) : 2025 | Cycles - Electrically power assisted cycles (EPAC) - Pedal assisted bicycles |