Sprockets could be classified into typical sprockets, HK sprockets along with other sprockets.
1. Regular sprocket
Conventional sprockets are ANSI sprockets which can be engaged with normal series roller chains. See P125 for dimensions.
You can find two varieties of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets is usually engaged with HK series roller chains, and people for single strand chains are identical to conventional sprockets. Having said that, sprockets for many strand chains are diverse from typical sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are intended in accordance to your following calculation formulas to suit respective specialty chains.
The sprockets made use of for that following chains will be the exact same since the normal sprockets in tooth gap form, but different in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of regular sprockets and other standard sprockets are calculated as follows. At first, the diameters of sprockets are calculated in the following calculation formulas.
Upcoming, sprocket tooth profile (the form with the tooth according to its thickness) is calculated through the following calculation formulas. (The values shown from the following pages have been calculated by these formulas and thought to be the conventional values.)
Calculation formulas for diameters and tooth gap kinds Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of a sprocket ideal for any chain pitch of one mm are respectively known as pitch diameter factor, tip diameter element and caliper diameter component. The respective aspects for respective numbers of teeth are listed beneath. If these aspects are multiplied by chain pitch, the essential dimensions with the corresponding sprocket can be obtained.
Instance:
While in the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter issue
Calculation formulas for tooth gap types
Because the most rational tooth gap forms by which the strain angle alterations in response for the elongation of a smoothly rotated roller chain with the lapse of service time, ANSI specify two kinds of tooth profiles: U-type and S-type. Generally, S-type tooth profiles are adopted in accordance with ANSI, and our standard sprockets also have S-tooth profiles.