Split_20240630_0658.pdf

PHILIPPINE AGRICULTURAL ENGINEERING STANDARD PAES 303:2000 Engineering Materials –Roller Chains and Sprockets for Agricultural Machines – Specifications and Applications 1 Scope This Standard establishes specifications and provides technical information...

PHILIPPINE AGRICULTURAL ENGINEERING STANDARD PAES 303:2000 Engineering Materials –Roller Chains and Sprockets for Agricultural Machines – Specifications and Applications 1 Scope This Standard establishes specifications and provides technical information for the proper application roller chains and sprockets for drives in agricultural machinery. 2 Reference The following normative references contains provisions which, through reference in this text, constitute provisions of this Standard: PAES 304:2000, Engineering Materials – Keys and Keyways for Agricultural Machines – Specifications and Applications 3 Application Roller chains are used to transmit power at high torque and low speed without slippage. 4 Definitions 4.1 chain pitch distance between adjacent joint members 4.2 pitch diameter the diameter of the pitch circle that passes through the centers of the link pins as the chain is wrapped on the sprocket 4.3 bottom diameter the diameter of a circle tangent to the curve (called the seating curve) at the bottom of the tooth gap 4.4 caliper diameter for a sprocket with an odd number of teeth, it is the distance from the bottom of the tooth gap to that of the nearest opposite tooth gap NOTE: The caliper diameter is the same as the bottom diameter for a sprocket with an even number of teeth. 4.5 PAES 303:2000 outside diameter it is the diameter over the tips of the teeth 5 Chains 5.1 Nomenclature Figure 1 shows the type of chain according number of strands, either single strand or multiple-strand. Figure 2 shows the designation of dimensions of chains. Dimensions of chains are given in Table 1. Figure 3 shows the different types of links. Single-strand Multiple-strand Figure 1 – Types of chains Roller width Roller diam. Pitch Figure 2 – Designation of dimensions of chains C-38