Sprockets can be classified into standard sprockets, HK sprockets and various sprockets.
1. Typical sprocket
Common sprockets are ANSI sprockets which could be engaged with normal series roller chains. See P125 for dimensions.
There are actually two sorts of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets can be engaged with HK series roller chains, and those for single strand chains are identical to conventional sprockets. Nonetheless, sprockets for various strand chains are diverse from regular sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are built according to the following calculation formulas to suit respective specialty chains.
The sprockets made use of for the following chains would be the same as the typical sprockets in tooth gap type, but different in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of typical sprockets and other basic sprockets are calculated as follows. At first, the diameters of sprockets are calculated from your following calculation formulas.
Upcoming, sprocket tooth profile (the shape of the tooth depending on its thickness) is calculated through the following calculation formulas. (The values shown within the following pages had been calculated by these formulas and regarded as the common 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 ideal for a chain pitch of one mm are respectively named pitch diameter issue, tip diameter component and caliper diameter component. The respective aspects for respective numbers of teeth are listed under. If these factors are multiplied by chain pitch, the fundamental dimensions of your corresponding sprocket is often obtained.
In the case of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter aspect
Calculation formulas for tooth gap types
As the most rational tooth gap varieties in which the strain angle improvements in response to your elongation of a smoothly rotated roller chain using the lapse of services time, ANSI specify two kinds of tooth profiles: U-type and S-type. On the whole, S-type tooth profiles are adopted in accordance with ANSI, and our conventional sprockets also have S-tooth profiles.