Dimensions of Sprocket

Sprockets is usually classified into conventional sprockets, HK sprockets along with other sprockets.
1. Normal sprocket
Standard sprockets are ANSI sprockets which can be engaged with typical series roller chains. See P125 for dimensions.
You will find two varieties of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets is often engaged with HK series roller chains, and individuals for single strand chains are identical to standard sprockets. Nonetheless, sprockets for various strand chains are unique from typical sprockets in sprocket tooth profile.
three. Other sprockets
Other sprockets are developed in accordance to your following calculation formulas to suit respective specialty chains.
The sprockets applied for that following chains would be the exact same since the conventional sprockets in tooth gap type, but distinctive in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of standard sprockets and various basic sprockets are calculated as follows. To start with, the diameters of sprockets are calculated from your following calculation formulas.
Following, sprocket tooth profile (the form from the tooth according to its thickness) is calculated from your following calculation formulas. (The values shown inside the following pages had been calculated by these formulas and thought to be the typical values.)
Calculation formulas for diameters and tooth gap varieties 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 one mm are respectively named pitch diameter issue, tip diameter factor and caliper diameter element. The respective variables for respective numbers of teeth are listed under. If these things are multiplied by chain pitch, the fundamental dimensions with the corresponding sprocket may be obtained.
Example:
From the situation of 80 (25.40 mm pitch) with 35 teeth Pitch diameter (Dp) ＝ P×Pitch diameter issue
Calculation formulas for tooth gap forms
Since the most rational tooth gap forms during which the pressure angle adjustments in response on the elongation of the smoothly rotated roller chain together with the lapse of support time, ANSI specify two types of tooth profiles: U-type and S-type. On the whole, S-type tooth profiles are adopted in accordance with ANSI, and our conventional sprockets also have S-tooth profiles.