L (3/8") timing pulleys

L timing pulleys work with L belts with a trapezoidal tooth and a pitch of 3/8" (9.525 mm). The L profile sits between the fine XL and the large H - it is chosen for medium-power drives in industrial machinery, presses and machine tools.

L timing pulleys - good load capacity with moderate diameters

The L profile gives good load capacity with moderate pulley diameters, so the drive stays compact. The pulleys comply with the standard and replace a worn pulley in the machine without modifications. A wide choice of tooth counts allows both small and large ratios. Smaller pulleys are made of C45 steel, and larger ones of grey cast iron. L belts are readily available, so servicing the drive does not mean a long wait for parts.

3/8 inch pitch L synchronous pulleys - selection by width and mounting

L pulleys divided by belt width, marked in hundredths of an inch (e.g. 050 means 1/2"), and within each width - by mounting method: Pilot bore or Taper-Lock. L belts can be found in the Timing belts category.

Questions and answers: L timing belt pulleys

Will an L pulley replace an H pulley?

No. The L profile has a pitch of 9.525 mm, and H - 12.7 mm. The belt and both pulleys must have the same profile.

How do I read the designation L 075?

L is the belt profile with a 3/8" pitch, and 075 is the width in hundredths of an inch, i.e. 3/4" (19.1 mm).