Dimensions of Sprocket

Sprockets is often classified into typical sprockets, HK sprockets as well as other sprockets.
one. Regular sprocket
Standard sprockets are ANSI sprockets which can be engaged with common series roller chains. See P125 for dimensions.
There are two kinds of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets might be engaged with HK series roller chains, and these for single strand chains are identical to conventional sprockets. Nonetheless, sprockets for many strand chains are diverse from common sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are designed according to your following calculation formulas to suit respective specialty chains.
The sprockets utilised for that following chains are the same since the typical sprockets in tooth gap type, but unique in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of standard sprockets together with other common sprockets are calculated as follows. In the beginning, the diameters of sprockets are calculated from your following calculation formulas.
Up coming, sprocket tooth profile (the form of the tooth based on its thickness) is calculated in the following calculation formulas. (The values proven within the following pages were calculated by these formulas and thought to be the common values.)
Calculation formulas for diameters and tooth gap kinds 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 referred to as pitch diameter element, tip diameter component and caliper diameter element. The respective variables for respective numbers of teeth are listed under. If these components are multiplied by chain pitch, the fundamental dimensions on the corresponding sprocket can be obtained.
Example:
While in the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter issue
Calculation formulas for tooth gap varieties
Because the most rational tooth gap forms by which the strain angle adjustments in response on the elongation of a smoothly rotated roller chain together with the lapse of services time, ANSI specify two sorts of tooth profiles: U-type and S-type. On the whole, S-type tooth profiles are adopted in accordance with ANSI, and our conventional sprockets also have S-tooth profiles.