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Sprockets is usually classified into standard sprockets, HK sprockets and also other sprockets.
one. Conventional sprocket
Regular sprockets are ANSI sprockets which can be engaged with regular series roller chains. See P125 for dimensions.
There are two sorts of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets is often engaged with HK series roller chains, and these for single strand chains are identical to standard sprockets. However, sprockets for a number of strand chains are different from regular 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 that following chains are the very same since the regular sprockets in tooth gap kind, but various in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of standard sprockets and also other general sprockets are calculated as follows. Initially, the diameters of sprockets are calculated from the following calculation formulas.
Up coming, sprocket tooth profile (the shape of your tooth based on its thickness) is calculated through the following calculation formulas. (The values proven while in the following pages have been calculated by these formulas and regarded as the normal values.)
Calculation formulas for diameters and tooth gap varieties Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The fundamental dimensions of the sprocket suitable for a chain pitch of one mm are respectively identified as pitch diameter aspect, tip diameter issue and caliper diameter component. The respective things for respective numbers of teeth are listed under. If these aspects are multiplied by chain pitch, the fundamental dimensions on the corresponding sprocket might be obtained.
Instance:
In the case of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap forms
As the most rational tooth gap types during which the stress angle adjustments in response to your elongation of a smoothly rotated roller chain with the lapse of support 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 conventional sprockets also have S-tooth profiles.