Dimensions of Sprocket

Sprockets could be classified into normal sprockets, HK sprockets and various sprockets.
one. Typical sprocket
Normal sprockets are ANSI sprockets which may be engaged with regular series roller chains. See P125 for dimensions.
You will find two varieties of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets may be engaged with HK series roller chains, and these for single strand chains are identical to typical sprockets. Nevertheless, sprockets for numerous strand chains are distinct from regular sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are developed in accordance towards the following calculation formulas to suit respective specialty chains.
The sprockets applied for that following chains would be the exact same because the normal sprockets in tooth gap form, but diverse in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of normal sprockets along with other general sprockets are calculated as follows. At first, the diameters of sprockets are calculated from your following calculation formulas.
Upcoming, sprocket tooth profile (the shape on the tooth based upon its thickness) is calculated from your following calculation formulas. (The values shown inside the following pages had been calculated by these formulas and regarded as the normal values.)
Calculation formulas for diameters and tooth gap forms Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The fundamental dimensions of the sprocket ideal to get a chain pitch of one mm are respectively termed pitch diameter component, tip diameter factor and caliper diameter element. The respective aspects for respective numbers of teeth are listed under. If these things are multiplied by chain pitch, the basic dimensions on the corresponding sprocket may be obtained.
Illustration:
In the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter factor
Calculation formulas for tooth gap types
As the most rational tooth gap kinds during which the stress angle alterations in response on the elongation of a smoothly rotated roller chain using the lapse of services time, ANSI specify two types of tooth profiles: U-type and S-type. Normally, S-type tooth profiles are adopted in accordance with ANSI, and our regular sprockets also have S-tooth profiles.