Dimensions of Sprocket

Sprockets can be classified into standard sprockets, HK sprockets as well as other sprockets.
one. Normal sprocket
Conventional sprockets are ANSI sprockets which may be engaged with conventional series roller chains. See P125 for dimensions.
There are two varieties of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets could be engaged with HK series roller chains, and people for single strand chains are identical to conventional sprockets. Having said that, sprockets for various strand chains are distinctive from common 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 employed for that following chains will be the similar since the regular sprockets in tooth gap kind, but distinct in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of conventional sprockets together with other general sprockets are calculated as follows. At the outset, the diameters of sprockets are calculated through the following calculation formulas.
Next, sprocket tooth profile (the shape of your tooth based upon its thickness) is calculated from your following calculation formulas. (The values shown during the following pages had been calculated by these formulas and thought to be the conventional values.)
Calculation formulas for diameters and tooth gap kinds Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of the sprocket ideal for a chain pitch of one mm are respectively termed pitch diameter issue, tip diameter factor and caliper diameter factor. The respective variables for respective numbers of teeth are listed under. If these aspects are multiplied by chain pitch, the fundamental dimensions in the corresponding sprocket might be obtained.
Illustration:
In the case of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter issue
Calculation formulas for tooth gap varieties
Since the most rational tooth gap types during which the strain angle modifications in response on the elongation of the smoothly rotated roller chain using the lapse of service 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 standard sprockets also have S-tooth profiles.

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