Diametral Pitch: Pinion & Gear Compatibility?

Thread starter Quadruple Bypass
Start date Nov 7, 2007
Tags

Gear Pitch

In summary, diametral pitch is a measure of the size of the teeth on a gear, calculated by dividing the number of teeth by the pitch diameter. It affects the compatibility of pinions and gears, which should have the same diametral pitch to work efficiently. It is not recommended to use pinions and gears with different diametral pitches, even if they have a common multiple. The diametral pitch can be determined by counting the teeth and measuring the pitch diameter or by referencing manufacturer information or gear engineering tables.

Nov 7, 2007

Quadruple Bypass

if the diametral pitch of the pinion is x, would the diametral pitch of the gear also be x?

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Nov 7, 2007

FredGarvin

Science Advisor

Mating pairs will have the same diametral pitch.

Nov 7, 2007

Quadruple Bypass

Thank you kind sir.

1. What is diametral pitch?

Diametral pitch is a term used in gear engineering to describe the number of teeth per inch of pitch diameter on a gear. In other words, it is a measure of the size of the teeth on a gear.

2. How is diametral pitch calculated?

Diametral pitch is calculated by dividing the number of teeth on a gear by its pitch diameter. The result is measured in inches.

3. How does diametral pitch affect pinion and gear compatibility?

The diametral pitch of a pinion and gear must be the same in order for them to be compatible. If the diametral pitches are different, the gears will not mesh properly and will not be able to transmit power efficiently.

4. Can pinions and gears with different diametral pitches be used together?

In some cases, pinions and gears with different diametral pitches can be used together if they have a common multiple. However, this is not recommended as it can lead to uneven power distribution and premature wear.

5. How can I determine the diametral pitch of a gear or pinion?

The diametral pitch of a gear or pinion can be determined by counting the number of teeth and measuring the pitch diameter. Alternatively, this information may be provided by the manufacturer or found in gear engineering tables.