Dimensions of Sprocket

Sprockets could be classified into common sprockets, HK sprockets and other sprockets.
one. Regular sprocket
Common sprockets are ANSI sprockets which can be engaged with regular series roller chains. See P125 for dimensions.
You can find two forms of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets may be engaged with HK series roller chains, and those for single strand chains are identical to standard sprockets. However, sprockets for numerous strand chains are distinctive from typical 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 the following chains are the same because the standard sprockets in tooth gap type, but distinct in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of standard sprockets along with other general sprockets are calculated as follows. At first, the diameters of sprockets are calculated in the following calculation formulas.
Up coming, sprocket tooth profile (the shape from the tooth based upon its thickness) is calculated from your following calculation formulas. (The values shown while in the following pages have been calculated by these formulas and regarded as the typical values.)
Calculation formulas for diameters and tooth gap forms Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of the sprocket appropriate for a chain pitch of 1 mm are respectively called pitch diameter aspect, tip diameter aspect and caliper diameter issue. The respective elements for respective numbers of teeth are listed under. If these components are multiplied by chain pitch, the essential dimensions of your corresponding sprocket is usually obtained.
Example:
From the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter factor
Calculation formulas for tooth gap varieties
Because the most rational tooth gap varieties in which the stress angle improvements in response to your elongation of the smoothly rotated roller chain using the lapse of services time, ANSI specify two varieties of tooth profiles: U-type and S-type. Normally, S-type tooth profiles are adopted in accordance with ANSI, and our common sprockets also have S-tooth profiles.

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