Dimensions of Sprocket

Sprockets may be classified into conventional sprockets, HK sprockets as well as other sprockets.
one. Typical sprocket
Regular sprockets are ANSI sprockets which may be engaged with common series roller chains. See P125 for dimensions.
You will 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 people for single strand chains are identical to normal sprockets. Having said that, sprockets for numerous strand chains are different from normal sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are made according for the following calculation formulas to suit respective specialty chains.
The sprockets utilised for your following chains will be the same as the normal sprockets in tooth gap type, but diverse in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of standard sprockets and also other basic sprockets are calculated as follows. Initially, the diameters of sprockets are calculated in the following calculation formulas.
Following, sprocket tooth profile (the form with the tooth based on its thickness) is calculated from the following calculation formulas. (The values shown within the following pages were calculated by these formulas and thought to be the standard values.)
Calculation formulas for diameters and tooth gap types Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The fundamental dimensions of a sprocket suitable to get a chain pitch of 1 mm are respectively known as pitch diameter factor, tip diameter element and caliper diameter factor. The respective components for respective numbers of teeth are listed under. If these elements are multiplied by chain pitch, the basic dimensions in the corresponding sprocket may be obtained.
Example:
Inside the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter aspect
Calculation formulas for tooth gap forms
As the most rational tooth gap kinds during which the strain angle adjustments in response to your elongation of a smoothly rotated roller chain together with the lapse of service time, ANSI specify two varieties of tooth profiles: U-type and S-type. Generally, S-type tooth profiles are adopted in accordance with ANSI, and our regular sprockets also have S-tooth profiles.