Dimensions of Sprocket

Sprockets is often classified into conventional sprockets, HK sprockets as well as other sprockets.
one. Conventional sprocket
Standard sprockets are ANSI sprockets which can be engaged with typical series roller chains. See P125 for dimensions.
There are 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 normal sprockets. Having said that, sprockets for several strand chains are distinctive from normal sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are developed in accordance to your following calculation formulas to suit respective specialty chains.
The sprockets made use of for the following chains will be the exact same as the regular sprockets in tooth gap type, but various in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of typical sprockets and other general sprockets are calculated as follows. Initially, the diameters of sprockets are calculated in the following calculation formulas.
Upcoming, sprocket tooth profile (the form in the tooth according to its thickness) is calculated from the following calculation formulas. (The values shown while in the following pages have been calculated by these formulas and regarded as 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 basic dimensions of the sprocket suitable for any chain pitch of one mm are respectively called pitch diameter aspect, tip diameter component and caliper diameter component. The respective elements for respective numbers of teeth are listed under. If these factors are multiplied by chain pitch, the essential dimensions in the corresponding sprocket is usually obtained.
Instance:
Inside the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter aspect
Calculation formulas for tooth gap forms
Since the most rational tooth gap forms by which the pressure angle changes in response to your elongation of the smoothly rotated roller chain using the lapse of services time, ANSI specify two forms of tooth profiles: U-type and S-type. Generally, S-type tooth profiles are adopted in accordance with ANSI, and our typical sprockets also have S-tooth profiles.