Dimensions of Sprocket

Sprockets may be classified into regular sprockets, HK sprockets and also other sprockets.
one. Typical sprocket
Regular sprockets are ANSI sprockets which could be engaged with normal series roller chains. See P125 for dimensions.
You will discover two varieties of tooth profiles: U-tooth and S-tooth.
two. HK sprocket
HK sprockets is usually engaged with HK series roller chains, and those for single strand chains are identical to conventional sprockets. Nonetheless, sprockets for several strand chains are distinct from normal sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are designed according to the following calculation formulas to suit respective specialty chains.
The sprockets applied for the following chains will be the exact same because the normal sprockets in tooth gap form, but unique in tooth thickness (sprocket tooth profile).
4. Calculation of sprocket dimensions
The dimensions of conventional sprockets and also other common sprockets are calculated as follows. Initially, the diameters of sprockets are calculated from your following calculation formulas.
Up coming, sprocket tooth profile (the shape on the tooth determined by its thickness) is calculated in the following calculation formulas. (The values shown within the following pages have been calculated by these formulas and regarded as the conventional 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 a sprocket appropriate for a chain pitch of 1 mm are respectively named pitch diameter element, tip diameter aspect and caliper diameter aspect. The respective variables for respective numbers of teeth are listed beneath. If these factors are multiplied by chain pitch, the fundamental dimensions of your corresponding sprocket can be obtained.
Illustration:
In the case of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter component
Calculation formulas for tooth gap varieties
As the most rational tooth gap types in which the strain angle changes in response for the elongation of the smoothly rotated roller chain with the lapse of service 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 typical sprockets also have S-tooth profiles.

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