Dimensions of Sprocket

Sprockets is often classified into normal sprockets, HK sprockets together with other sprockets.
one. Regular sprocket
Conventional sprockets are ANSI sprockets which may be engaged with conventional series roller chains. See P125 for dimensions.
There are two sorts of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets may be engaged with HK series roller chains, and those for single strand chains are identical to common sprockets. Nonetheless, sprockets for various strand chains are various from typical sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are made in accordance to the following calculation formulas to suit respective specialty chains.
The sprockets employed for that following chains would be the very same as the standard sprockets in tooth gap kind, but unique in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of typical sprockets and various standard sprockets are calculated as follows. To start with, the diameters of sprockets are calculated in the following calculation formulas.
Up coming, sprocket tooth profile (the form on the tooth dependant upon its thickness) is calculated from the following calculation formulas. (The values shown inside the following pages have been calculated by these formulas and regarded as the regular values.)
Calculation formulas for diameters and tooth gap types Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The fundamental dimensions of the sprocket appropriate for any chain pitch of 1 mm are respectively called pitch diameter issue, tip diameter element and caliper diameter element. The respective things for respective numbers of teeth are listed beneath. If these variables are multiplied by chain pitch, the essential dimensions with the corresponding sprocket could be obtained.
Instance:
In the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap forms
Because the most rational tooth gap varieties during which the pressure angle modifications in response to your elongation of a smoothly rotated roller chain with all the lapse of services time, ANSI specify two sorts 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.

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