Sprockets is usually classified into typical sprockets, HK sprockets as well as other sprockets.
one. Normal sprocket
Standard sprockets are ANSI sprockets which can be engaged with typical series roller chains. See P125 for dimensions.
You will find two types of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets can be engaged with HK series roller chains, and these for single strand chains are identical to conventional sprockets. Having said that, sprockets for many strand chains are distinct from standard sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are intended in accordance for the following calculation formulas to suit respective specialty chains.
The sprockets made use of to the following chains will be the exact same as the conventional sprockets in tooth gap kind, but various in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of common sprockets and various common sprockets are calculated as follows. In the beginning, the diameters of sprockets are calculated from your following calculation formulas.
Following, sprocket tooth profile (the form of the tooth according to its thickness) is calculated from your following calculation formulas. (The values proven during the following pages have been calculated by these formulas and regarded as the common values.)
Calculation formulas for diameters and tooth gap forms Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The fundamental dimensions of the sprocket appropriate to get a chain pitch of 1 mm are respectively known as pitch diameter aspect, tip diameter aspect and caliper diameter aspect. The respective factors for respective numbers of teeth are listed under. If these factors are multiplied by chain pitch, the fundamental dimensions of your corresponding sprocket is usually obtained.
Within the case of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter issue
Calculation formulas for tooth gap varieties
Since the most rational tooth gap types in which the pressure angle adjustments in response to the elongation of a smoothly rotated roller chain using 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 standard sprockets also have S-tooth profiles.