1 Scope
This standard specifies the characteristics of short-pitch precision roller and bush chains with associated sprockets suitable for the mechanical transmission of power and allied applications. It covers dimensions, tolerances, length measurement, preloading, minimum tensile strengths and minimum dynamic strength.
Although Chapter 5 applies to chain sprockets for cycles and motor cycles, this standard is not applicable to their chains, which are covered by GB/T 3579 and GB/T 14212, respectively.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the referenced document applies.
GB/T 1800.4 "Limits and Fits Tables of Standard Tolerance Grades and Limit Deviations for Holes and Shafts" (GB/T 1800.4-1999, eqv ISO 286-2: 1988)
GB/T 1801 "Limits and Fits--Selection of Tolerance Zones and Fits" (GB/T 1801-1999, eqv ISO 1829: 1975)
GB/T 3579-2006 "Cycle Chains - Characteristics and Test Methods" (ISO 9633: 2001, IDT)
GB/T 14212-2003 "Motor Cycle Chains—Characteristics and Test methods" (ISO 10190: 1992, IDT)
GB/T 18150-2006 "Guidelines for the Selection of Roller Chain Drives" (ISO 10823: 2004, IDT)
GB/T 20736-2006 "Fatigue Test Method for Transmission Precision Roller Chain" (ISO 15654: 2004, IDT)
Contents
Foreword I
ISO Introduction III
1 Scope 1
2 Normative References 1
3 Chains 1
4 Attachments 13
5 Chain Sprockets 17
Annex A (Normative) Pitch Circle Diameters 23
Annex B (Informative) Equivalent Chain Designations 24
Annex C (Informative) Method of Calculating Chain Minimum Dynamic Strength 25
Annex D (Informative) Method of Determining Maximum Test Force Fmax When Conducting Dynamic Strength Conformance Test 27
Bibliography 28
