JIS UDC 621.825:621.85.055.25 JAPANESEINDUSTRIALSTANDARD Roller ChainShaft Couplings JISB1456-9 TranslatedandPublished by JapaneseStandardsAssociation 49 Printed in Japan
In the event of any doubt arising the original Standard in Japanese is to be final auithority.
113 UDC 621.825:621.85.055.25 JAPANESE INDUSTRIAL STANDARD JIS Roller Chain Shaft Couplings B1456-1989 Scope This Japanese Industrial Standard specifies the roller chain shaft couplings （hereafter referred to as the*couplings") to be used for general machinery. 2. Classification The couplings shallbe divided into 15 classes as given in the Attached Table， figures or three figures) of the roller chain and the number of sprocket teeth (the last two figures). 3. Quality 3.1 On the sprockets roller chains as well as joint pins there shall be no harmful flaws cracks or the like. 3.2 Tolerances on deflections ofeach part of sprocket relative to the center of shaft hole shall be as specified in Table 1. Applicable Standards: JIS B 0401-System of Limits and Fits JIS B 0405-Permissible Machining Deviations in Dimensions.without Tolerance Indication JIS B 0903-Cylindrical Shaft Ends JIS B 1301-Sunk Keys and Their Corresponding Keyways JIS B 1801-Transmission Roller Chains JIS B 1802-Sprocket Tooth Form for Transmission Roller Chains JIS B 7502-Micrometer Callipers for External Measurement JIS B 7503-Dial Gauges Reading in 0.01 mm JIS B 7507-Vernier Callipers JIS B 7508-Micrometer Callipers for Internal Measurement (Tubular Type) JIS G 4051-Carbon Steels for Machine Structural Use |
2 B 1456-1989 Table 1.Tolerances on Deflections of Each Part A （Vicinity of tooth bottom) shafthole Center of A Unit:mm Designation b c P 4012 4014 4016 5014 5016 5018 0.05 0.10 6018 6022 8018 9022 0.06 0.12 10020 12018 12022 16018 16022 0.06 0.15 3.3The balance of couplings shall be adequate and an imbalance shall be tolerated to the extent of not causing a vibration. 4. Shapes Dimension and Construction 4.1 The shapes dimension...
JIS B1456-1989 英文版 Roller Chain Shaft Couplings.pdf
