Dimensions of Sprocket

Sprockets might be classified into common sprockets, HK sprockets as well as other sprockets.
1. Conventional sprocket
Standard sprockets are ANSI sprockets which may be engaged with typical series roller chains. See P125 for dimensions.
You will find two forms of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets might be engaged with HK series roller chains, and people for single strand chains are identical to common sprockets. Even so, sprockets for several strand chains are unique from typical sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are built according to the following calculation formulas to suit respective specialty chains.
The sprockets used for your following chains would be the very same as the standard sprockets in tooth gap form, but unique in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of conventional sprockets as well as other standard sprockets are calculated as follows. At the outset, the diameters of sprockets are calculated in the following calculation formulas.
Up coming, sprocket tooth profile (the shape of your tooth determined by its thickness) is calculated through the following calculation formulas. (The values proven during the following pages had been calculated by these formulas and regarded as the common values.)
Calculation formulas for diameters and tooth gap forms Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of a sprocket ideal for any chain pitch of one mm are respectively identified as pitch diameter factor, tip diameter issue and caliper diameter aspect. The respective factors for respective numbers of teeth are listed under. If these components are multiplied by chain pitch, the basic dimensions of your corresponding sprocket is often obtained.
Within the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter issue
Calculation formulas for tooth gap types
Since the most rational tooth gap types during which the strain angle adjustments in response to your elongation of the smoothly rotated roller chain with all the lapse of service time, ANSI specify two sorts of tooth profiles: U-type and S-type. Usually, S-type tooth profiles are adopted in accordance with ANSI, and our typical sprockets also have S-tooth profiles.


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