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Pulley H timing pulleys

12.7mm pitch · Trapezoidal, imperial · Dunlop / Optibelt

H timing pulleys are toothed pulleys for 12.7mm pitch imperial H timing belts, with the classic trapezoidal tooth. We stock Dunlop / Optibelt pulleys in a range of tooth counts and widths. Search by the pulley code, such as 18H100F (1210), and use the filters to narrow it down by teeth or width.

  • Pitch12.7mm
  • ToothTrapezoidal, imperial
  • Example18H100F (1210)
  • BorePilot bore or taper lock
  • BrandDunlop / Optibelt

Finding the right H pulley

Reading the code18H100F (1210) is 18 teeth, H profile, for a 1″ (100) wide belt, flanged (F), taking a 1210 taper lock bush.

Size and speedThe number of teeth sets the pulley size and the speed ratio. Count the teeth on the old pulley and match the width to your belt.

Imperial or metric?H pulleys only suit imperial H belts. Metric belts with a similar pitch won’t mesh properly, so match the pulley to the code on the belt.

Tip: For the belt, see our H timing belts. Taper lock pulleys show the bush size in brackets; choose a imperial taper lock bush in that size with a bore to fit your shaft.

  • Not sure of the size?Our how to measure guide shows you how to identify the belt section the pulley runs.
  • Other pulleysTry XL, L or XH imperial timing pulleys.
  • Still not sure?Call 020 8138 2848 with the pulley code, belt section or shaft size and we'll find the right part.
  • Buying for a business?Open a trade account for trade pricing on maintenance stock and repeat orders.
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