Dimensions of Sprocket

Sprockets may be classified into common sprockets, HK sprockets along with other sprockets.
1. Regular sprocket
Typical sprockets are ANSI sprockets which may be engaged with conventional series roller chains. See P125 for dimensions.
There are actually two sorts of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets is often engaged with HK series roller chains, and individuals for single strand chains are identical to normal sprockets. Even so, sprockets for various strand chains are diverse from common sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are developed in accordance to your following calculation formulas to suit respective specialty chains.
The sprockets utilized to the following chains are the very same as the common sprockets in tooth gap kind, but diverse in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of normal sprockets together with other basic sprockets are calculated as follows. At first, the diameters of sprockets are calculated through the following calculation formulas.
Upcoming, sprocket tooth profile (the shape of the tooth based on its thickness) is calculated from your following calculation formulas. (The values proven in the following pages were calculated by these formulas and regarded as the typical values.)
Calculation formulas for diameters and tooth gap types 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 1 mm are respectively referred to as pitch diameter aspect, tip diameter component and caliper diameter issue. The respective components for respective numbers of teeth are listed under. If these things are multiplied by chain pitch, the fundamental dimensions in the corresponding sprocket might be obtained.
Example:
While in the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter issue
Calculation formulas for tooth gap varieties
Because the most rational tooth gap forms during which the pressure angle improvements in response to your elongation of the smoothly rotated roller chain with the lapse of support time, ANSI specify two forms of tooth profiles: U-type and S-type. Usually, S-type tooth profiles are adopted in accordance with ANSI, and our standard sprockets also have S-tooth profiles.