Dimensions of Sprocket

Sprockets is often classified into regular sprockets, HK sprockets and various sprockets.
1. Conventional sprocket
Standard sprockets are ANSI sprockets which might be engaged with standard series roller chains. See P125 for dimensions.
You will find two types of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets could be engaged with HK series roller chains, and people for single strand chains are identical to regular sprockets. On the other hand, sprockets for a number of strand chains are diverse from typical sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are created in accordance for the following calculation formulas to suit respective specialty chains.
The sprockets applied for the following chains are the very same because the regular sprockets in tooth gap kind, but unique in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of typical sprockets along with other basic sprockets are calculated as follows. In the beginning, the diameters of sprockets are calculated in the following calculation formulas.
Up coming, sprocket tooth profile (the shape from the tooth based on its thickness) is calculated through the following calculation formulas. (The values shown in the following pages had been calculated by these formulas and thought to be the common values.)
Calculation formulas for diameters and tooth gap types Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of a sprocket suitable for any chain pitch of 1 mm are respectively referred to as pitch diameter component, tip diameter aspect and caliper diameter element. The respective components for respective numbers of teeth are listed beneath. If these elements are multiplied by chain pitch, the fundamental dimensions of the corresponding sprocket can be obtained.
Instance:
From the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap kinds
Since the most rational tooth gap types through which the stress angle adjustments in response for the elongation of the smoothly rotated roller chain using the lapse of support time, ANSI specify two varieties of tooth profiles: U-type and S-type. On the whole, S-type tooth profiles are adopted in accordance with ANSI, and our conventional sprockets also have S-tooth profiles.

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