Dimensions of Sprocket

Sprockets might be classified into common sprockets, HK sprockets and various sprockets.
one. Standard sprocket
Conventional sprockets are ANSI sprockets which may be engaged with common series roller chains. See P125 for dimensions.
You’ll find two kinds 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 typical sprockets. Having said that, sprockets for numerous strand chains are distinct from typical sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are intended in accordance to the following calculation formulas to suit respective specialty chains.
The sprockets employed for your following chains will be the very same since the typical sprockets in tooth gap kind, but various in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of standard sprockets and various general sprockets are calculated as follows. At first, the diameters of sprockets are calculated from your following calculation formulas.
Next, sprocket tooth profile (the form in the tooth based on its thickness) is calculated from your following calculation formulas. (The values proven in the following pages had been calculated by these formulas and regarded as the normal values.)
Calculation formulas for diameters and tooth gap varieties Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of a sprocket appropriate for a chain pitch of 1 mm are respectively named pitch diameter issue, tip diameter element and caliper diameter factor. The respective elements for respective numbers of teeth are listed below. If these elements are multiplied by chain pitch, the fundamental dimensions with the corresponding sprocket is usually obtained.
Example:
While in the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter aspect
Calculation formulas for tooth gap types
As the most rational tooth gap forms during which the strain angle alterations in response for 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 normal sprockets also have S-tooth profiles.