3mm Shaft Diameter Chain and Belt Pulleys

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17 Products

MXL Series Corrosion-Resistant Timing Belt Pulleys

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 One Flange

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
10.8mm	10	2.030mm	3mm	Finished	4mm	5.1mm	11.1mm	6.5mm	1	Machined	Anodized Aluminum	10.8mm	00000000	000000
11.4mm	11	2.030mm	3mm	Finished	4mm	5.1mm	11.1mm	7.1mm	1	Machined	Anodized Aluminum	11.4mm	00000000	00000
12.2mm	12	2.030mm	3mm	Finished	4mm	5.1mm	11.1mm	7.8mm	1	Machined	Anodized Aluminum	12.2mm	00000000	00000
13.5mm	14	2.030mm	3mm	Finished	4mm	5.1mm	11.1mm	9.1mm	1	Machined	Anodized Aluminum	13.5mm	00000000	00000
For 6 mm Max. Belt Wd.
10.8mm	10	2.030mm	3mm	Finished	7.2mm	8.3mm	14.3mm	6.5mm	1	Machined	Anodized Aluminum	10.8mm	00000000	00000
12.2mm	12	2.030mm	3mm	Finished	7.2mm	8.3mm	14.3mm	7.8mm	1	Machined	Anodized Aluminum	12.2mm	00000000	00000
13.5mm	14	2.030mm	3mm	Finished	7.2mm	8.3mm	14.3mm	9.1mm	1	Machined	Anodized Aluminum	13.5mm	00000000	00000
For 9 mm Max. Belt Wd.
10.8mm	10	2.030mm	3mm	Finished	10.4mm	11.5mm	17.5mm	6.5mm	1	Machined	Anodized Aluminum	10.8mm	00000000	00000
13.5mm	14	2.030mm	3mm	Finished	10.4mm	11.5mm	17.5mm	9.1mm	1	Machined	Anodized Aluminum	13.5mm	00000000	00000

MXL Series Lightweight Timing Belt Pulleys

Made from polycarbonate, these pulleys are useful in applications with weight constraints. All 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 Hub and One Flange (10-16 Teeth)

With Hub and Two Flanges (10–16 Teeth)

With Hub and One Flange (10–16 Teeth)

With Hub and Two Flanges (10–16 Teeth)

1 Flange
OD	Number of Teeth	Pitch	For Shaft Dia.	Bore Type	Inside Wd.	Outside Wd.	Overall Wd.	Pitch Dia.	Fabrication	Material	Hub Dia.		Each
For 6 mm Max. Belt Wd.
11mm	10	2.030mm	3mm	Finished	9.5mm	15.9mm	17.5mm	6.5mm	Molded	Polycarbonate	11mm	0000000	00000
2 Flanges
For 6 mm Max. Belt Wd.
11mm	10	2.030mm	3mm	Finished	9.5mm	15.9mm	17.5mm	6.5mm	Molded	Polycarbonate	11mm	0000000	00000

High-Strength HTD Timing Belt Idler Pulleys

Keep high torque drive (HTD) timing belt systems running tightly with these idler pulleys. Made with built-in, free-spinning ball bearings, they're installed on shafts or belt tensioners (not included) to remove slack from timing belts. By maintaining tension on the belt, these pulleys reduce wear and vibration in 3D printing, machine tool drives, robotics, and other linear motion applications that require precise positioning.

When replacing an idler pulley, be sure the pulley matches your belt's trade size.

Toothed pulleys are shaped to mesh with the teeth on a timing belt, which reduces wear on the belt's teeth.

Smooth pulleys have no teeth; they're used with the smooth side of the belt.

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

Toothed

For 6 mm Max. Belt Wd.
Manufacturer Series	OD	Number of Teeth	For Shaft Dia.	Dia.	Wd.	Groove Dp.	Shaft Mount Type	Bore Type	Number of Flanges	Fabrication	Material	Bearing Type		Each
Gates PowerGrip 2GT	15mm	20	3mm	12.22mm	10mm	1.39 mm	Slip Fit	Finished	2	Machined	Aluminum	Ball	00000000	00000
For 9 mm Max. Belt Wd.
Gates PowerGrip 2GT	15mm	20	3mm	12.22mm	14mm	1.39 mm	Slip Fit	Finished	2	Machined	Aluminum	Ball	00000000	0000
For 12 mm Max. Belt Wd.
Gates PowerGrip 2GT	15mm	20	3mm	12.22mm	16mm	1.39 mm	Slip Fit	Finished	2	Machined	Aluminum	Ball	00000000	0000

Smooth

For 6 mm Max. Belt Wd.
Manufacturer Series	OD, mm	For Shaft Dia., mm	Dia., mm	Wd., mm	Groove Dp., mm	Shaft Mount Type	Bore Type	Number of Flanges	Fabrication	Material	Bearing Type		Each
Gates PowerGrip 2GT	15	3	12	10	1.5	Slip Fit	Finished	2	Machined	Aluminum	Ball	00000000	00000
For 9 mm Max. Belt Wd.
Gates PowerGrip 2GT	15	3	12	14	1.5	Slip Fit	Finished	2	Machined	Aluminum	Ball	00000000	0000
For 12 mm Max. Belt Wd.
Gates PowerGrip 2GT	15	3	12	16	1.5	Slip Fit	Finished	2	Machined	Aluminum	Ball	00000000	0000