Dimensions of Sprocket

Sprockets may be classified into typical sprockets, HK sprockets together with other sprockets.
one. Typical sprocket
Normal sprockets are ANSI sprockets which might be engaged with common series roller chains. See P125 for dimensions.
You can find two sorts of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets may be engaged with HK series roller chains, and these for single strand chains are identical to conventional sprockets. However, sprockets for multiple strand chains are distinct from common sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are created in accordance to the following calculation formulas to suit respective specialty chains.
The sprockets used to the following chains would be the identical since the normal sprockets in tooth gap type, but unique in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of normal sprockets and also other general sprockets are calculated as follows. At first, the diameters of sprockets are calculated from your following calculation formulas.
Following, sprocket tooth profile (the shape on the tooth based upon its thickness) is calculated from your following calculation formulas. (The values shown inside the following pages have been calculated by these formulas and regarded as the common values.)
Calculation formulas for diameters and tooth gap types Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of a sprocket ideal to get a chain pitch of one mm are respectively termed pitch diameter component, tip diameter factor and caliper diameter element. The respective components for respective numbers of teeth are listed under. If these things are multiplied by chain pitch, the basic dimensions on the corresponding sprocket could be obtained.
Illustration:
In the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter factor
Calculation formulas for tooth gap types
As the most rational tooth gap kinds during which the stress angle adjustments in response on the 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 normal sprockets also have S-tooth profiles.