Dimensions of Sprocket

Sprockets may be classified into typical sprockets, HK sprockets and various sprockets.
one. Regular sprocket
Conventional sprockets are ANSI sprockets which may be engaged with conventional series roller chains. See P125 for dimensions.
You will find two kinds of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets could be engaged with HK series roller chains, and people for single strand chains are identical to standard sprockets. Nevertheless, sprockets for numerous strand chains are distinct from conventional sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are created according to the following calculation formulas to suit respective specialty chains.
The sprockets used for your following chains would be the identical as the conventional sprockets in tooth gap kind, but distinctive in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of typical sprockets and various general sprockets are calculated as follows. Initially, the diameters of sprockets are calculated through the following calculation formulas.
Upcoming, sprocket tooth profile (the shape of your tooth depending on its thickness) is calculated through the following calculation formulas. (The values shown during the following pages had been calculated by these formulas and regarded as the standard 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 a sprocket ideal for a chain pitch of 1 mm are respectively called pitch diameter factor, tip diameter issue and caliper diameter issue. The respective elements for respective numbers of teeth are listed beneath. If these components are multiplied by chain pitch, the basic dimensions on the corresponding sprocket may be obtained.
In the case of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap varieties
As the most rational tooth gap forms during which the pressure angle adjustments in response on the elongation of the smoothly rotated roller chain together with the lapse of service time, ANSI specify two types 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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