Free printable · Measure parts
Variator roller size chart and measuring sheet
Diameter, width and weight are three separate things, and a roller set is only interchangeable on all three. A record sheet with true-size circles and a weighing block.
Layout preview of page one. The PDF itself is typeset text, not an image.
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3 pages. No account, no sign-up, no newsletter. Print it, copy it, hand it to somebody else.
Version v1.0 · September 2026. Opens in your browser's PDF viewer, where you can print directly.
The problem it solves
Roller listings quote a size like 16×13 and a weight in grams, and buyers routinely order the right weight in the wrong size. Worse, rollers wear flat on one side, so the diameter you measure off an old set is smaller than the size they were sold as — which sends people one size down and makes the problem worse.
Who it is for
- Anyone changing roller weight to alter how the machine pulls away
- Owners diagnosing a rattling or vibrating CVT
- Anyone who has taken a variator apart and cannot read the markings on the old rollers
What is on it
- What the two numbers in a roller size actually describe
- True-size circles from 15mm to 20mm to lay a roller against
- A width measuring block
- A weight record for all six rollers, because they wear unevenly
- A wear inspection checklist
How to use it
- 01Check the calibration rule first.
- 02Measure a roller across its widest point — worn rollers develop a flat, and measuring across the flat gives a false reading.
- 03Weigh rollers individually on a kitchen scale that reads to 0.1g if you have one.
Use it with the registry
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Free to print, copy, and share — including in forums, clubs and workshops. If you find a mistake on one of these sheets, tell us and it gets corrected. Every sheet carries a version so you can tell which one you have. All printables.