Try our new
Pulley-Belt Distance Calculator! Pick from our available pulley and belt sizes and it will tell you how far apart they will be, OR plug in your desired distance and it will tell you which belt to use!
Our specialty Timing Pulleys and Belts are the perfect solution for transmitting power from motors to wheels or shafts.
While O-Rings and round belts will slip under tension, timing belts have teeth that ensure a positive lock to the pulleys.
A range of nine pulley sizes means there are 45 different ratio combinations to choose from!
Use with our selection of
FingerTech timing belts, or any other 3mm pitch belt (4mm wide or less).
Pitch (distance between tooth centers): 3mm
Belt Width (maximum): 4mm
Material: 6061 Aluminum
Sizes: 15 Teeth - 42 Teeth
Bore: 3mm (15T and 16T bores can be drilled up to 5/32", larger pulleys can be drilled up to 1/4")
Includes 4-40 setscrew for fastening to shaft
Setscrew requires
0.050" hex wrench 
| # Teeth |
Pitch Diameter (for calculating centers) |
Outside Tooth Diameter |
Weight |
| 15T |
14.32mm (.564") |
13.56mm (.534") |
3.3g (0.10oz) |
| 16T |
15.28mm (.602") |
14.52mm (.572") |
4.0g (0.13oz) |
| 18T |
17.19mm (.677") |
16.43mm (.647") |
5.3g (0.18oz) |
| 22T |
21.01mm (.827") |
20.25mm (.797") |
7.8g (0.28oz) |
| 26T |
24.83mm (.977") |
24.07mm (.947") |
10.5g (0.38oz) |
| 30T |
28.65mm (1.128") |
27.89mm (1.098") |
13.5g (0.48oz) |
| 34T |
32.47mm (1.278") |
31.71mm (1.248") |
16.3g (0.55oz) |
| 38T |
36.29mm (1.429") |
35.53mm (1.399") |
21.0g (0.73oz) |
| 42T |
40.11mm (1.579") |
39.34mm (1.549") |
26.3g (0.90oz) |
Pulley Size Chart (mm)
