Sprockets could be classified into typical sprockets, HK sprockets and various sprockets.
one. Regular sprocket
Regular sprockets are ANSI sprockets which can be engaged with standard series roller chains. See P125 for dimensions.
You will find two styles of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets is usually engaged with HK series roller chains, and individuals for single strand chains are identical to standard sprockets. On the other hand, sprockets for multiple strand chains are different from regular sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are made according on the following calculation formulas to suit respective specialty chains.
The sprockets employed for your following chains are the identical as the standard sprockets in tooth gap type, but diverse in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of regular sprockets and various basic sprockets are calculated as follows. Initially, the diameters of sprockets are calculated from your following calculation formulas.
Upcoming, sprocket tooth profile (the shape of your tooth based on its thickness) is calculated through the following calculation formulas. (The values proven inside the following pages were calculated by these formulas and regarded as 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 the sprocket suitable for any chain pitch of one mm are respectively identified as pitch diameter component, tip diameter factor and caliper diameter aspect. The respective components for respective numbers of teeth are listed under. If these things are multiplied by chain pitch, the basic dimensions of the corresponding sprocket might be obtained.
Illustration:
Within the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter component
Calculation formulas for tooth gap kinds
As the most rational tooth gap types during which the stress angle adjustments in response towards 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.
