Sprockets could be classified into regular sprockets, HK sprockets together with other sprockets.
one. Conventional sprocket
Common sprockets are ANSI sprockets which can be engaged with regular series roller chains. See P125 for dimensions.
You can find two kinds of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets might be engaged with HK series roller chains, and individuals for single strand chains are identical to standard sprockets. Nonetheless, sprockets for multiple strand chains are distinctive from normal sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are intended according to the following calculation formulas to suit respective specialty chains.
The sprockets employed for the following chains are the very same as the normal sprockets in tooth gap form, but diverse in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of conventional sprockets along with other standard sprockets are calculated as follows. To start with, the diameters of sprockets are calculated from your following calculation formulas.
Upcoming, sprocket tooth profile (the shape in the tooth based upon its thickness) is calculated from your following calculation formulas. (The values proven within the following pages were calculated by these formulas and thought to be the typical 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 the sprocket suitable for any chain pitch of 1 mm are respectively named pitch diameter issue, tip diameter issue and caliper diameter issue. The respective elements for respective numbers of teeth are listed below. If these aspects are multiplied by chain pitch, the basic dimensions from the corresponding sprocket may be obtained.
Instance:
While 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 varieties during which the stress angle improvements in response for the elongation of the smoothly rotated roller chain together with the lapse of support time, ANSI specify two varieties of tooth profiles: U-type and S-type. On the whole, S-type tooth profiles are adopted in accordance with ANSI, and our regular sprockets also have S-tooth profiles.