Sprockets can be classified into conventional sprockets, HK sprockets and also other sprockets.
1. Normal sprocket
Typical sprockets are ANSI sprockets which may be engaged with normal series roller chains. See P125 for dimensions.
You can find two sorts of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets might be engaged with HK series roller chains, and those for single strand chains are identical to standard sprockets. Even so, sprockets for many strand chains are distinctive from normal sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are created in accordance towards the following calculation formulas to suit respective specialty chains.
The sprockets applied for your following chains would be the exact same since the normal sprockets in tooth gap kind, but diverse in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of conventional sprockets together with other standard sprockets are calculated as follows. Initially, the diameters of sprockets are calculated from your following calculation formulas.
Following, sprocket tooth profile (the form of your tooth according to its thickness) is calculated in the following calculation formulas. (The values proven during the following pages had been calculated by these formulas and thought to be the standard values.)
Calculation formulas for diameters and tooth gap forms Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of the sprocket appropriate to get a chain pitch of 1 mm are respectively named pitch diameter aspect, tip diameter element and caliper diameter element. The respective things for respective numbers of teeth are listed beneath. If these aspects are multiplied by chain pitch, the essential dimensions in the corresponding sprocket might be obtained.
Instance:
During the case of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter component
Calculation formulas for tooth gap kinds
Because the most rational tooth gap varieties during which the stress angle alterations in response to your elongation of the smoothly rotated roller chain with all the lapse of service time, ANSI specify two kinds of tooth profiles: U-type and S-type. Usually, S-type tooth profiles are adopted in accordance with ANSI, and our standard sprockets also have S-tooth profiles.