Sprockets might be classified into conventional sprockets, HK 
sprockets and also other sprockets.
one. Standard sprocket
Regular sprockets are ANSI sprockets which can be engaged with common series roller chains. See P125 for dimensions.
You can find two sorts of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets might be engaged with HK series roller chains, and these for single strand chains are identical to regular sprockets. Nevertheless, sprockets for various strand chains are distinct from standard sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are made in accordance for the following calculation formulas to suit respective specialty chains.
The sprockets made use of for your following chains are the very same because the normal sprockets in tooth gap kind, but diverse in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of typical sprockets and various basic sprockets are calculated as follows. In the beginning, the diameters of sprockets are calculated in the following calculation formulas.
Next, sprocket tooth profile (the form of the tooth based on its thickness) is calculated from your following calculation formulas. (The values shown while in the following pages were calculated by these formulas and regarded as the typical values.)
Calculation formulas for diameters and tooth gap kinds Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The fundamental dimensions of a sprocket ideal for any chain pitch of 1 mm are respectively named pitch diameter factor, tip diameter factor and caliper diameter factor. The respective elements for respective numbers of teeth are listed beneath. If these components are multiplied by chain pitch, the basic dimensions of the corresponding sprocket may be obtained.
Instance:
Inside the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter issue
Calculation formulas for tooth gap varieties
Because the most rational tooth gap types in which the stress angle improvements in response to your elongation of the smoothly rotated roller chain together with the lapse of services 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 regular sprockets also have S-tooth profiles.
