Anodized aluminum has good corrosion resistance. Pulleys are MXL series (miniature extra light) and have trapezoidal teeth. The teeth match up with the grooves along the inside diameter of a timing belt in order to move components forward or backward. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.

For technical drawings and 3-D models, click on a part number.

Press-Fit Mount with Set Screw

With Two Flanges

For 3 mm Max. Belt Wd.
OD	Number of Teeth	Pitch	For Shaft Dia.	Bore Type	Inside Wd.	Outside Wd.	Overall Wd.	Pitch Dia.	Number of Flanges	Fabrication	Material	Hub Dia.		Each
30.7mm	40	2.030mm	6mm	Finished	4mm	7mm	13.5mm	25.9mm	2	Machined	Anodized Aluminum	19.2mm	00000000	000000
32mm	42	2.030mm	6mm	Finished	4mm	7mm	13.5mm	27.2mm	2	Machined	Anodized Aluminum	20.5mm	00000000	00000
33.4mm	44	2.030mm	6mm	Finished	4mm	7mm	13.5mm	28.5mm	2	Machined	Anodized Aluminum	21.8mm	00000000	00000
36.1mm	48	2.030mm	6mm	Finished	4mm	7mm	13.5mm	31mm	2	Machined	Anodized Aluminum	23.8mm	00000000	00000
43.9mm	60	2.030mm	6mm	Finished	4mm	7mm	13.5mm	38.8mm	2	Machined	Anodized Aluminum	31mm	00000000	00000

Plastic Gears and Gear Racks—20° Pressure Angle

The current industry standard, these 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re also known as spur gears.

Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion.

For components to mesh correctly, they must have the same pressure angle and pitch/module.

Acetal gears are best suited for use in light duty machines or for prototyping. Gears with a clamping bore secure to shafts with a clamping screw. They’re easily removed or adjusted without marring your shaft.

For technical drawings and 3-D models, click on a part number.

Metric Gears

Clamping Bore

										Hub
Module	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Material	Fabrication	Color	Dia., mm	Wd., mm	Clamping Screw Thread Size		Each
Clamping Bore
0.5	36	18	19	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	000000
0.5	40	20	21	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000
0.5	45	22.5	23.5	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000
0.5	48	24	25	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000
0.5	50	25	26	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000
0.5	60	30	31	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000
0.5	64	32	33	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000
0.5	70	35	36	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000
0.5	80	40	41	5	13.5	5	Acetal Plastic	Molded	White	14	8.5	M2.5	00000000	00000