Sprockets might be classified into regular sprockets, HK sprockets along with other sprockets.
one. Regular sprocket
Normal sprockets are ANSI sprockets which might be engaged with conventional series roller chains. See P125 for dimensions.
You will find two sorts of tooth profiles: U-tooth and S-tooth.
2. HK sprocket
HK sprockets can be engaged with HK series roller chains, and individuals for single strand chains are identical to conventional sprockets. Having said that, sprockets for several strand chains are different from normal sprockets in sprocket tooth profile.
3. Other sprockets
Other sprockets are developed in accordance towards the following calculation formulas to suit respective specialty chains.
The sprockets employed for your following chains will be the very same as the common sprockets in tooth gap kind, but distinctive in tooth thickness (sprocket tooth profile).
four. Calculation of sprocket dimensions
The dimensions of conventional sprockets as well as other basic sprockets are calculated as follows. At first, the diameters of sprockets are calculated through the following calculation formulas.
Upcoming, sprocket tooth profile (the shape from the tooth based upon its thickness) is calculated through the following calculation formulas. (The values proven during the following pages were calculated by these formulas and regarded as the conventional values.)
Calculation formulas for diameters and tooth gap kinds Calculation formulas for diameters
Calculation of pitch diameter, tip diameter and caliper diameter
The essential dimensions of the sprocket ideal for any chain pitch of 1 mm are respectively referred to as pitch diameter element, tip diameter factor and caliper diameter aspect. The respective aspects for respective numbers of teeth are listed under. If these components are multiplied by chain pitch, the essential dimensions on the corresponding sprocket can be obtained.
Instance:
Within the situation of 80 (25.forty mm pitch) with 35 teeth Pitch diameter (Dp) = P×Pitch diameter issue
Calculation formulas for tooth gap forms
Because the most rational tooth gap kinds through which the strain angle adjustments in response to your elongation of a smoothly rotated roller chain using the lapse of support 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.