Dimensions of Sprocket

Sprockets is often classified into conventional sprockets, HK sprockets and various sprockets.
1. Common sprocket
Normal sprockets are ANSI sprockets which can be engaged with standard series roller chains. See P125 for dimensions.
You will discover two styles of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets could be engaged with HK series roller chains, and those for single strand chains are identical to typical sprockets. On the other hand, sprockets for many strand chains are diverse from typical sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are made in accordance to the following calculation formulas to suit respective specialty chains.
The sprockets utilised to the following chains will be the very same since the common sprockets in tooth gap form, but diverse in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of standard sprockets together with other basic sprockets are calculated as follows. At the outset, the diameters of sprockets are calculated through the following calculation formulas.
Following, sprocket tooth profile (the form of the tooth determined by its thickness) is calculated from your following calculation formulas. (The values shown inside the following pages were 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 appropriate for any chain pitch of one mm are respectively identified as pitch diameter issue, tip diameter element and caliper diameter component. The respective things for respective numbers of teeth are listed below. If these factors are multiplied by chain pitch, the basic dimensions from the corresponding sprocket may be obtained.
Instance:
From the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter aspect
Calculation formulas for tooth gap types
Since the most rational tooth gap kinds in which the stress angle changes in response to the elongation of the smoothly rotated roller chain with all the lapse of services time, ANSI specify two types of tooth profiles: U-type and S-type. Usually, S-type tooth profiles are adopted in accordance with ANSI, and our standard sprockets also have S-tooth profiles.