December 30, 2020

Sprockets could be classified into conventional sprockets, HK sprockets as well as other sprockets.
1. Typical sprocket
Normal sprockets are ANSI sprockets which may be engaged with conventional series roller chains. See P125 for dimensions.
You’ll find two sorts of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets is usually engaged with HK series roller chains, and these for single strand chains are identical to common sprockets. Nonetheless, sprockets for multiple strand chains are unique from standard sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are made according for the following calculation formulas to suit respective specialty chains.
The sprockets utilized for your following chains will be the identical because the common sprockets in tooth gap kind, but unique in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of common sprockets and other standard sprockets are calculated as follows. At the outset, the diameters of sprockets are calculated from the following calculation formulas.
Up coming, sprocket tooth profile (the form of the tooth based upon its thickness) is calculated from the following calculation formulas. (The values proven inside the following pages were calculated by these formulas and regarded as the typical values.)
Calculation formulas for diameters and tooth gap forms Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The basic dimensions of a sprocket suitable for any chain pitch of one mm are respectively termed pitch diameter component, tip diameter component and caliper diameter element. The respective variables for respective numbers of teeth are listed under. If these elements are multiplied by chain pitch, the fundamental dimensions on the corresponding sprocket is often obtained.
During the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter element
Calculation formulas for tooth gap types
As the most rational tooth gap varieties through which the pressure angle alterations in response to your elongation of a smoothly rotated roller chain with the lapse of support time, ANSI specify two sorts of tooth profiles: U-type and S-type. Normally, S-type tooth profiles are adopted in accordance with ANSI, and our normal sprockets also have S-tooth profiles.