Dimensions of Sprocket

Sprockets is usually classified into typical sprockets, HK sprockets as well as other sprockets.
one. Common sprocket
Regular sprockets are ANSI sprockets which could be engaged with standard series roller chains. See P125 for dimensions.
There are actually two styles of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets is usually engaged with HK series roller chains, and those for single strand chains are identical to standard sprockets. Nonetheless, sprockets for several strand chains are unique from regular sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are made according on the following calculation formulas to suit respective specialty chains.
The sprockets used for your following chains will be the identical because the standard sprockets in tooth gap form, but diverse in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of regular sprockets and also other basic sprockets are calculated as follows. At the outset, the diameters of sprockets are calculated from your following calculation formulas.
Subsequent, sprocket tooth profile (the shape in the tooth according to its thickness) is calculated from your following calculation formulas. (The values proven in the following pages were calculated by these formulas and thought to be the standard 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 a sprocket appropriate to get a chain pitch of one mm are respectively called pitch diameter component, tip diameter issue and caliper diameter aspect. The respective aspects for respective numbers of teeth are listed under. If these elements are multiplied by chain pitch, the fundamental dimensions with the corresponding sprocket might be obtained.
Example:
While in the case of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter element
Calculation formulas for tooth gap kinds
Since the most rational tooth gap types through which the stress angle improvements in response towards the elongation of the 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 normal sprockets also have S-tooth profiles.