Table of Contents

Introduction
1 Scope
2 Normative references
3 Definitions
4 Name
5 Models
6 Dimensions of pulley grooves
6.1 H-type tooth profile
6.2 P-type tooth profile
6.3 R-type tooth profile
6.4 S-type tooth profile
7 Performance
7.1 Tolerances of pulley outside diameters
7.2 Pitch-to-pitch tolerances
7.3 Parallelism between teeth and the axis of the bore
7.4 Axial circular runout
7.5 Radial circular runout
7.6 Taper accuracy of the tip cylinder
7.7 Surface finish of teeth
7.8 Static balance
8 Flange dimensions
9 Test method
9.1 General
9.2 Groove profiles
9.3 Pitch-to-pitch tolerances
9.4 Parallelism between teeth and the axis of the bore
9.5 Axial circular runout
9.6 Radial circular runout
9.7 Outside diameter
9.8 Taper accuracy of the tip cylinder
10 Product nomenclature
11 Marking
Annex (informative) - Comparison table between JIS and corresponding
International standard

Abstract

Describes the synchronous pulley that engages with the curvilinear toothed synchronous belt.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Japanese Standards Association
Pages
ISBN
Supersedes	JIS B 1857-2:2001