Sprockets could be classified into typical sprockets, HK sprockets together with other sprockets.
1. Standard sprocket
Regular sprockets are ANSI sprockets which may be engaged with regular series roller chains. See P125 for dimensions.
You will find two types of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets can be engaged with HK series roller chains, and individuals for single strand chains are identical to conventional sprockets. Having said that, sprockets for numerous strand chains are various from regular sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are made in accordance on the following calculation formulas to suit respective specialty chains.
The sprockets employed for the following chains are the identical as the regular sprockets in tooth gap type, but diverse in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of regular sprockets and other standard sprockets are calculated as follows. Initially, the diameters of sprockets are calculated through the following calculation formulas.
Following, sprocket tooth profile (the shape of your tooth based on its thickness) is calculated through the following calculation formulas. (The values shown while in the following pages were calculated by these formulas and regarded as the regular 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 the sprocket suitable for any chain pitch of one mm are respectively named pitch diameter issue, tip diameter factor and caliper diameter element. The respective components for respective numbers of teeth are listed beneath. If these components are multiplied by chain pitch, the basic dimensions of the corresponding sprocket is often obtained.
Illustration:
Inside the situation of 80 (25.forty mm pitch) with 35 
teeth Pitch diameter (Dp) ＝ P×Pitch diameter component
Calculation formulas for tooth gap varieties
Because the most rational tooth gap kinds during which the stress angle alterations in response to the elongation of a smoothly rotated roller chain using the lapse of support time, ANSI specify two types of tooth profiles: U-type and S-type. In general, S-type tooth profiles are adopted in accordance with ANSI, and our normal sprockets also have S-tooth profiles.
