How to measure sprockets for chain size

Written by mary lougee
  • Share
  • Tweet
  • Share
  • Pin
  • Email
How to measure sprockets for chain size
Bicycle sprockets guide the chain in a circle for momentum. (bicycle image by Chepko Danil from Fotolia.com)

A sprocket is a round metal wheel with teeth spaced evenly around it to support a chain in the same size as the sprocket. Sprockets power manual machines such as bicycles and motor-driven machines such as ATVs, motorcycles and electric scooters. Conveyor belts and agricultural equipment use sprockets with chains to turn belts and cultivate crops. Measuring the sprocket for its chain pitch and width allows you to buy the correct replacement chain.

Skill level:
Easy

Other People Are Reading

Things you need

  • Digital calipers

Show MoreHide

Instructions

  1. 1

    Press the "On/Off" button on the digital calipers to turn on the LCD display screen. Press the "mm/inch" button to select standard or metric measurements. Push the large jaws closed on the calipers, and press the "Zero" button to zero out the display.

  2. 2

    Pull the large jaws apart, and place them in the centre of the lower area on each side of one tooth on the sprocket. Read the digital display on the screen for the chain pitch.

  3. 3

    Push the large caliper jaws back together, and press the "Zero" button to clear the measurement.

  4. 4

    Pull the large caliper jaws apart, and place them horizontally on one tooth of the sprocket. Read the measurement on the screen for the sprocket width.

Tips and warnings

  • Chain pitch is the thickness of the chain that sits inside the teeth of a sprocket.
  • Chain width is the horizontal width of a chain that fits on a sprocket in the same width.

Don't Miss

Filter:
  • All types
  • Articles
  • Slideshows
  • Videos
Sort:
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the eHow.co.uk site, you consent to the use of cookies. For more information, please see our Cookie policy.