Dimensions of Sprocket

Sprockets is often classified into common sprockets, HK sprockets as well as other sprockets.
1. Standard sprocket
Standard sprockets are ANSI sprockets which can be engaged with conventional series roller chains. See P125 for dimensions.
You will discover two styles of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets can be engaged with HK series roller chains, and individuals for single strand chains are identical to standard sprockets. However, sprockets for multiple strand chains are different from normal sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are made according towards the following calculation formulas to suit respective specialty chains.
The sprockets used for your following chains are the same as the common sprockets in tooth gap form, but various in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of typical sprockets as well as other basic sprockets are calculated as follows. At the outset, the diameters of sprockets are calculated from the following calculation formulas.
Following, sprocket tooth profile (the shape of your tooth based upon its thickness) is calculated in the following calculation formulas. (The values shown in the following pages were calculated by these formulas and regarded as the regular values.)
Calculation formulas for diameters and tooth gap varieties Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The basic dimensions of the sprocket ideal for any chain pitch of one mm are respectively termed pitch diameter aspect, tip diameter issue and caliper diameter issue. The respective things for respective numbers of teeth are listed below. If these things are multiplied by chain pitch, the fundamental dimensions of your corresponding sprocket may be obtained.
Instance:
During the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter aspect
Calculation formulas for tooth gap types
Because the most rational tooth gap types during which the pressure angle changes in response towards the elongation of the smoothly rotated roller chain with the lapse of service time, ANSI specify two kinds of tooth profiles: U-type and S-type. Normally, S-type tooth profiles are adopted in accordance with ANSI, and our normal sprockets also have S-tooth profiles.

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