Dimensions of Sprocket

Sprockets is often classified into normal sprockets, HK sprockets and various sprockets.
one. Conventional sprocket
Conventional sprockets are ANSI sprockets which can be engaged with conventional series roller chains. See P125 for dimensions.
You’ll find two styles of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets may be engaged with HK series roller chains, and those for single strand chains are identical to conventional sprockets. Nevertheless, sprockets for multiple strand chains are distinctive from regular sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are designed according to your following calculation formulas to suit respective specialty chains.
The sprockets utilised for the following chains would be the very same as the common sprockets in tooth gap kind, but unique in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of regular sprockets and other general sprockets are calculated as follows. At the outset, the diameters of sprockets are calculated in the following calculation formulas.
Subsequent, sprocket tooth profile (the form of the tooth dependant upon its thickness) is calculated from your following calculation formulas. (The values proven from the following pages have been calculated by these formulas and regarded as the common values.)
Calculation formulas for diameters and tooth gap kinds Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of the sprocket ideal to get a chain pitch of one mm are respectively called pitch diameter element, tip diameter component and caliper diameter issue. The respective variables for respective numbers of teeth are listed below. If these elements are multiplied by chain pitch, the basic dimensions from the corresponding sprocket could be obtained.
Example:
During the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap varieties
As the most rational tooth gap types by which the pressure angle alterations in response to your elongation of the smoothly rotated roller chain with all the lapse of service time, ANSI specify two kinds of tooth profiles: U-type and S-type. On the whole, S-type tooth profiles are adopted in accordance with ANSI, and our standard sprockets also have S-tooth profiles.

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