Dimensions of Sprocket

Sprockets could be classified into conventional sprockets, HK sprockets together with other sprockets.
one. Standard sprocket
Standard sprockets are ANSI sprockets which could be engaged with normal series roller chains. See P125 for dimensions.
There are actually two sorts of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets may be engaged with HK series roller chains, and people for single strand chains are identical to normal sprockets. Nevertheless, sprockets for multiple strand chains are various from normal sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are designed in accordance on the following calculation formulas to suit respective specialty chains.
The sprockets used to the following chains will be the same since the standard sprockets in tooth gap kind, but distinctive in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of standard sprockets and other standard sprockets are calculated as follows. Initially, the diameters of sprockets are calculated in the following calculation formulas.
Following, sprocket tooth profile (the shape on the tooth determined by its thickness) is calculated from your following calculation formulas. (The values proven during the following pages were calculated by these formulas and thought to be the common 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 the sprocket appropriate for any chain pitch of 1 mm are respectively named pitch diameter component, tip diameter component and caliper diameter issue. The respective elements for respective numbers of teeth are listed beneath. If these aspects are multiplied by chain pitch, the fundamental dimensions in the corresponding sprocket may be obtained.
Within the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap types
Because the most rational tooth gap types by which the strain angle changes in response to your elongation of the smoothly rotated roller chain with the lapse of service time, ANSI specify two forms of tooth profiles: U-type and S-type. Generally, S-type tooth profiles are adopted in accordance with ANSI, and our regular sprockets also have S-tooth profiles.


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