Sprockets can be classified into typical sprockets, HK sprockets and other sprockets.
one. Standard sprocket
Normal sprockets are ANSI sprockets which could be engaged with normal series roller chains. See P125 for dimensions.
You will discover two sorts of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets might be engaged with HK series roller chains, and those for single strand chains are identical to typical sprockets. Having said that, sprockets for multiple strand chains are distinctive from regular sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are intended in accordance to your following calculation formulas to suit respective specialty chains.
The sprockets used to the following chains would be the same as the typical sprockets in tooth gap kind, but various in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of regular sprockets together with other basic sprockets are calculated as follows. To start with, the diameters of sprockets are calculated from your following calculation formulas.
Following, sprocket tooth profile (the shape on the tooth determined by its thickness) is calculated from the following calculation formulas. (The values proven while in the following pages have been calculated by these formulas and thought to be the typical values.)
Calculation formulas for diameters and tooth gap kinds Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The basic dimensions of the sprocket suitable for a chain pitch of one mm are respectively named pitch diameter factor, tip diameter component and caliper diameter issue. The respective things for respective numbers of teeth are listed below. If these components are multiplied by chain pitch, the essential dimensions on the corresponding sprocket might be obtained.
Example:
Within the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter aspect
Calculation formulas for tooth gap varieties
Because the most rational tooth gap varieties in which the strain angle alterations in response on the elongation of the smoothly rotated roller chain together with the lapse of services time, ANSI specify two types of tooth profiles: U-type and S-type. Generally, S-type tooth profiles are adopted in accordance with ANSI, and our normal sprockets also have S-tooth profiles.