# How is sprocket size measured?

## How is sprocket size measured?

If You Have The Sprocket and Need The Chain Size To measure the chain size, if you have just the sprocket, use calipers to measure between the teeth. Measure from center to center of where the chain roller would set between the teeth that will give you the pitch.

**How wide is a 420 sprocket?**

420 Non-Standard Roller Chain

Part No. | 420 |
---|---|

Plate Thickness (T) | 0.060 |

Overall Width (F) | 0.288 |

Overall Width (G) | 0.344 |

Unit of Measure (Inches or Millimeters) | in |

### How thick is a 420 sprocket?

Bicycle and Motorcycle Chain Dimensions

Chain No. | Pitch | Sprocket thickness |
---|---|---|

420 | 1/2″ | 0.227″ |

425 | 1/2″ | 0.284″ |

428 | 1/2″ | 0.284″ |

520 | 5/8″ | 0.227″ |

**What is sprocket diameter?**

The sprocket pitch diameter is an imaginary circle through which the chain pin centers move around the sprocket. The pitch diameter is the fundamental design geometry that determines the size shape and form of the sprocket teeth dimensions.

## What do the numbers mean on a sprocket?

The sprocket size represents the first two digits in the chain designation. Example: 40A14 is size 40. The number of teeth represents the last two digits in the chain designation. Count the number of teeth. Example: 40A14-14 teeth.

**Is 40 41 and 420 chain the same?**

Both 420 and 40 chains have the same tensile strength and pitch, the only major difference is the width between the inner plates of #40 is larger than #420 by 1/16″. 40, 41, and 420 chains all have the same pitch (1/2″) and use the same sprocket, even though the roller width is not identical.

### What is the difference between a 40 41 and 420 chain?

#420 will have more strength than the #41 chain because the side plates will be taller. #40 will be the beefiest chain in this class. This will help with thicker sprockets since there is more room between the side plates. #41 will look just like the #420 chain, but will stand shorter.

**What is roller diameter of sprocket?**

The sprocket halves are held together by bolts on either side of the hub. This particular style is normally available in chain pitch sizes of 40 through 240, and bore diameters of 3/4” through 6”, depending on chain pitch selected.

## What is PCD in sprocket?

Pitch of Circle Diameter (P.C.D.)

**What is PCD of a sprocket?**

Pitch of Circle Diameter

Pitch of Circle Diameter (P.C.D.)

### What is the diameter of a 72 tooth sprocket?

The tooth width is 0.459” nominal. The maximum bore size will accommodate standard keyseat and setscrew over keyseat….

Bore Diameter | 1.25 inches |
---|---|

Number of Teeth | 72 |

Outside Diameter | 17.63 inches |

Part Number | 60A72 |

Pitch | 0.75 inches |

**How wide is a #40 sprocket?**

Dimensions: Inches

Chain Size → | #25 | #35 |
---|---|---|

Tooth Count ↓ | 1/4″ Pitch | 3/8″ Pitch |

40 | 3.327 | 4.990 |

41 | 3.406 | 5.109 |

42 | 3.486 | 5.229 |

## Can 420 chains work on 41 sprockets?

40, 41, and 420 chains all have the same pitch (1/2″) and use the same sprocket, even though the roller width is not identical. The difference is minute and won’t cause any failure.

**Is 41 chain the same as 415?**

He says the difference is that the #41 is 1/16th inch wider than a factory 415 chain. He told me that the additional width will actually add life to the chain and sprockets because of lessened “chain side wear”. He said no swingarm alignment is perfect.

### What is the diameter of a 14 tooth sprocket?

Dimensions: Inches

Chain Size → | #25 | #120 |
---|---|---|

Tooth Count ↓ | 1/4″ Pitch | 1-1/2″ Pitch |

13 | 1.164 | 6.986 |

14 | 1.245 | 7.472 |

15 | 1.326 | 7.956 |

**How do you calculate PCD?**

The easiest way to calculate the PCD is as follows:

- Identify the size of the rim or tyre size.
- Measure the distance ‘S’ between two adjacent studs from the centre of each hole.
- Using the relevant diagram depending on the number of studs you have you should be able to identify the correct PCD.

## How big is a 60 tooth sprocket?

Product Overview Inside Diameter: 1.1245 in. Thickness: 0.086-0.092 in.

**What is the diameter of a 42 tooth sprocket?**

Chainring Diameter by Tooth Count

Tooth Count | Diameter (mm) | Diameter (in) |
---|---|---|

42T | 176.5mm | 6.97in |

44T | 184.6mm | 7.28in |

46T | 192.7mm | 7.60in |

48T | 200.8mm | 7.92in |

### What is the diameter of a 48 tooth sprocket?

3.955 in.

Outside Diameter: 3.955 in. Pitch Diameter: 3.822 in.