Dimensions of Sprocket

Sprockets can be classified into regular sprockets, HK sprockets and also other sprockets.
1. Regular sprocket
Conventional sprockets are ANSI sprockets which could be engaged with normal series roller chains. See P125 for dimensions.
You can find two styles of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets is often engaged with HK series roller chains, and these for single strand chains are identical to conventional sprockets. Nevertheless, sprockets for several strand chains are various from standard sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are created according on the following calculation formulas to suit respective specialty chains.
The sprockets employed to the following chains will be the very same since the regular sprockets in tooth gap form, but unique 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. In the beginning, the diameters of sprockets are calculated through the following calculation formulas.
Up coming, sprocket tooth profile (the form of your tooth depending on its thickness) is calculated through the following calculation formulas. (The values proven inside the following pages had 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 basic dimensions of a sprocket ideal to get a chain pitch of 1 mm are respectively referred to as pitch diameter element, tip diameter element and caliper diameter aspect. The respective components for respective numbers of teeth are listed beneath. If these things are multiplied by chain pitch, the fundamental dimensions on the corresponding sprocket could be obtained.
Illustration:
While in the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap kinds
Because the most rational tooth gap types through which the stress angle improvements in response to the elongation of a smoothly rotated roller chain with 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 typical sprockets also have S-tooth profiles.

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