5 mm Gears | McMaster-Carr

Filter by

Number of Teeth

System of Measurement

Inch

Metric

For Maximum Belt Width

Pitch

Belt Trade Size

Shaft Diameter

Teeth Shape

Material

Inside Width

Shaft Type

Bore Type

Pitch Diameter

Outside Width

Mount Type

Number of Flanges

Overall Width

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Fabrication

Bushing Trade Number

Finish

138 Products

XL Series Lightweight Timing Belt Pulleys

Acetal and aluminum construction makes these pulleys useful in weight-sensitive applications. All are XL series (extra light) and have trapezoidal teeth. 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

Without Flanges

With Two Flanges

Without Flanges

												Hub
OD	Number of Teeth	Pitch	For Shaft Dia.	Bore Type	Inside Wd.	Outside Wd.	Overall Wd.	Pitch Dia.	Number of Flanges	Fabrication	Material	Material	Dia.		Each
For 3/8" Max. Belt Wd.
Metric
22mm	10	5.000mm	6mm	Finished	13mm	16mm	22mm	16.18mm	2	Molded	Acetal	Aluminum	13mm	0000000	000000
24mm	11	5.000mm	6mm	Finished	13mm	16mm	22mm	17.78mm	2	Molded	Acetal	Aluminum	13mm	0000000	00000
25mm	12	5.000mm	6mm	Finished	13mm	16mm	22mm	19.41mm	2	Molded	Acetal	Aluminum	13mm	0000000	00000
28mm	14	5.000mm	8mm	Finished	13mm	16mm	22mm	22.63mm	2	Molded	Acetal	Aluminum	19mm	0000000	00000
30mm	15	5.000mm	8mm	Finished	13mm	16mm	22mm	24.26mm	2	Molded	Acetal	Aluminum	19mm	0000000	00000
32mm	16	5.000mm	8mm	Finished	13mm	16mm	22mm	25.88mm	2	Molded	Acetal	Aluminum	19mm	0000000	00000
35mm	18	5.000mm	8mm	Finished	13mm	16mm	22mm	29.11mm	2	Molded	Acetal	Aluminum	19mm	0000000	00000
38mm	20	5.000mm	8mm	Finished	13mm	16mm	22mm	32.33mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
40mm	21	5.000mm	8mm	Finished	13mm	16mm	22mm	33.96mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
41mm	22	5.000mm	8mm	Finished	13mm	16mm	22mm	35.59mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
44mm	24	5.000mm	8mm	Finished	13mm	16mm	22mm	38.81mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
48mm	26	5.000mm	8mm	Finished	13mm	16mm	22mm	42.04mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
51mm	28	5.000mm	8mm	Finished	13mm	16mm	22mm	45.29mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
54mm	30	5.000mm	10mm	Finished	13mm	16mm	22mm	48.51mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
57mm	32	5.000mm	10mm	Finished	13mm	16mm	22mm	51.74mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
64mm	36	5.000mm	10mm	Finished	13mm	16mm	22mm	58.22mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
70mm	40	5.000mm	10mm	Finished	13mm	16mm	22mm	64.67mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
74mm	42	5.000mm	10mm	Finished	13mm	16mm	22mm	67.92mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
77mm	44	5.000mm	10mm	Finished	13mm	16mm	22mm	71.15mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
83mm	48	5.000mm	12mm	Finished	13mm	16mm	22mm	77.62mm	2	Molded	Acetal	Aluminum	22mm	0000000	00000
97mm	60	5.000mm	12mm	Finished	__	13mm	22mm	97.03mm	__	Molded	Acetal	Aluminum	22mm	0000000	00000

AT Series Timing Belt Pulleys

Made of aluminum, these pulleys have good corrosion resistance. 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. Choose pulleys that have a diameter to match your shaft. Pulleys without a shaft diameter have a pilot bore, so you can customize them to your needs.

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

Press-Fit Mount

With Two Flanges

Without Flanges

With Two Flanges

Without Flanges

For 10 mm Max. Belt Wd.
OD, mm	Number of Teeth	Pitch, mm	For Shaft Dia., mm	Bore Type	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication	Material	Hub Dia., mm		Each
23	12	5	__	Plain	10	15	21	19.25	2	Machined	Aluminum	11	0000000	000000
28	15	5	__	Plain	10	15	21	24.05	2	Machined	Aluminum	16	0000000	00000
36	20	5	__	Plain	10	15	21	32	2	Machined	Aluminum	23	0000000	00000
38	22	5	__	Plain	10	15	21	35.25	2	Machined	Aluminum	24	0000000	00000
42	24	5	__	Plain	10	15	21	38.4	2	Machined	Aluminum	26	0000000	00000
48	27	5	__	Plain	10	15	21	43.2	2	Machined	Aluminum	30	0000000	00000
51	30	5	8	Plain	10	15	21	47.95	2	Machined	Aluminum	34	0000000	00000
70	42	5	8	Plain	10	15	21	67	2	Machined	Aluminum	40	0000000	00000
94.25	60	5	8	Plain	__	15	21	95.65	__	Machined	Aluminum	65	0000000	00000
For 16 mm Max. Belt Wd.
23	12	5	__	Plain	16	21	27	19.25	2	Machined	Aluminum	11	0000000	00000
32	18	5	__	Plain	16	21	27	28.8	2	Machined	Aluminum	20	0000000	00000
36	20	5	__	Plain	16	21	27	32	2	Machined	Aluminum	23	0000000	00000
38	22	5	__	Plain	16	21	27	35.25	2	Machined	Aluminum	24	0000000	00000
42	24	5	__	Plain	16	21	27	38.4	2	Machined	Aluminum	26	0000000	00000
44	25	5	__	Plain	16	21	27	40	2	Machined	Aluminum	26	0000000	00000
44	26	5	__	Plain	16	21	27	41.6	2	Machined	Aluminum	26	0000000	00000
48	27	5	8	Plain	16	21	27	43.2	2	Machined	Aluminum	30	0000000	00000
48	28	5	8	Plain	16	21	27	44.75	2	Machined	Aluminum	32	0000000	00000
51	30	5	8	Plain	16	21	27	47.95	2	Machined	Aluminum	34	0000000	00000
54	32	5	8	Plain	16	21	27	51.1	2	Machined	Aluminum	38	0000000	00000
64	36	5	8	Plain	16	21	27	57.45	2	Machined	Aluminum	38	0000000	00000
66	40	5	8	Plain	16	21	27	63.85	2	Machined	Aluminum	40	0000000	00000
68.8	44	5	8	Plain	__	21	27	70.2	__	Machined	Aluminum	45	0000000	00000
70	42	5	8	Plain	16	21	27	67	2	Machined	Aluminum	40	0000000	00000
94.25	60	5	8	Plain	__	21	27	95.65	__	Machined	Aluminum	65	0000000	000000
For 25 mm Max. Belt Wd.
32	16	5	__	Plain	25	30	36	25.6	2	Machined	Aluminum	18	0000000	00000
36	20	5	__	Plain	25	30	36	32	2	Machined	Aluminum	23	0000000	00000
38	22	5	__	Plain	25	30	36	35.25	2	Machined	Aluminum	24	0000000	00000
42	24	5	__	Plain	25	30	36	38.4	2	Machined	Aluminum	26	0000000	00000
44	25	5	__	Plain	25	30	36	40	2	Machined	Aluminum	26	0000000	00000
44	26	5	__	Plain	25	30	36	41.6	2	Machined	Aluminum	26	0000000	00000
48	27	5	8	Plain	25	30	36	43.2	2	Machined	Aluminum	30	0000000	00000
51	30	5	8	Plain	25	30	36	47.95	2	Machined	Aluminum	34	0000000	00000
54	32	5	8	Plain	25	30	36	51.1	2	Machined	Aluminum	38	0000000	00000
66.5	40	5	8	Plain	25	30	36	63.85	2	Machined	Aluminum	40	0000000	00000
75.15	48	5	8	Plain	__	30	36	76.55	__	Machined	Aluminum	50	0000000	000000

T Series Timing Belt Pulleys

Made of aluminum, these pulleys have good corrosion resistance. 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. Pulleys without a shaft diameter have a pilot bore, so you can customize them to your needs.

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

Press-Fit Mount

With Two Flanges

Without Flanges

With Two Flanges

Without Flanges

For 10 mm Max. Belt Wd.
OD, mm	Number of Teeth	Pitch, mm	Bore Type	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication	Material	Hub Dia., mm		Each
20	10	5	Plain	12	15	21	16.05	2	Machined	Aluminum	8	000000	000000
22.2	12	5	Plain	12	15	21	19.25	2	Machined	Aluminum	12	0000000	00000
25.4	14	5	Plain	12	15	21	22.45	2	Machined	Aluminum	14	0000000	00000
28	15	5	Plain	12	15	21	24.05	2	Machined	Aluminum	16	0000000	00000
32	16	5	Plain	12	15	21	25.6	2	Machined	Aluminum	18	0000000	00000
32	18	5	Plain	12	15	21	28.8	2	Machined	Aluminum	20	0000000	00000
35	19	5	Plain	12	15	21	30.4	2	Machined	Aluminum	22	0000000	00000
36	20	5	Plain	12	15	21	32	2	Machined	Aluminum	24	0000000	00000
38	22	5	Plain	12	15	21	35.25	2	Machined	Aluminum	25	0000000	00000
41.3	24	5	Plain	12	15	21	38.4	2	Machined	Aluminum	26	0000000	00000
44	25	5	Plain	12	15	21	40	2	Machined	Aluminum	26	000000	00000
44.5	26	5	Plain	12	15	21	41.6	2	Machined	Aluminum	26	0000000	00000
48	27	5	Plain	12	15	21	43.2	2	Machined	Aluminum	30	0000000	00000
51	30	5	Plain	12	15	21	47.76	2	Machined	Aluminum	34	0000000	00000
54	32	5	Plain	12	15	21	50.94	2	Machined	Aluminum	38	0000000	00000
63	36	5	Plain	12	15	21	57.31	2	Machined	Aluminum	38	0000000	00000
66.7	40	5	Plain	12	15	21	63.66	2	Machined	Aluminum	40	0000000	00000
75.55	48	5	Plain	__	15	21	76.42	__	Machined	Aluminum	50	0000000	00000
94.65	60	5	Plain	__	15	21	95.52	__	Machined	Aluminum	65	0000000	00000
For 16 mm Max. Belt Wd.
20	10	5	Plain	18.5	21	27	16.05	2	Machined	Aluminum	8	000000	00000
22.2	12	5	Plain	18.5	21	27	19.25	2	Machined	Aluminum	12	0000000	00000
25.4	14	5	Plain	18.5	21	27	22.45	2	Machined	Aluminum	14	0000000	00000
28	15	5	Plain	18.5	21	27	24.05	2	Machined	Aluminum	16	0000000	00000
32	16	5	Plain	18.5	21	27	25.6	2	Machined	Aluminum	18	0000000	00000
32	18	5	Plain	18.5	21	27	28.8	2	Machined	Aluminum	20	0000000	00000
35	19	5	Plain	18.5	21	27	30.4	2	Machined	Aluminum	22	0000000	00000
36	20	5	Plain	18.5	21	27	32	2	Machined	Aluminum	24	0000000	00000
38	22	5	Plain	18.5	21	27	35.25	2	Machined	Aluminum	25	0000000	00000
41.3	24	5	Plain	18.5	21	27	38.4	2	Machined	Aluminum	26	0000000	00000
44	25	5	Plain	18.5	21	27	40	2	Machined	Aluminum	26	000000	00000
44.5	26	5	Plain	18.5	21	27	41.6	2	Machined	Aluminum	26	0000000	00000
48	27	5	Plain	18.5	21	27	43.2	2	Machined	Aluminum	30	0000000	00000
51	30	5	Plain	18.5	21	27	47.95	2	Machined	Aluminum	34	0000000	00000
54	32	5	Plain	18.5	21	27	51.1	2	Machined	Aluminum	38	0000000	00000
63	36	5	Plain	18.5	21	27	57.45	2	Machined	Aluminum	38	0000000	00000
66.7	40	5	Plain	18.5	21	27	63.85	2	Machined	Aluminum	40	0000000	00000
75.55	48	5	Plain	__	21	27	76.55	__	Machined	Aluminum	50	0000000	00000
94.65	60	5	Plain	__	21	27	95.65	__	Machined	Aluminum	65	0000000	00000
For 25 mm Max. Belt Wd.
20	10	5	Plain	27	30	36	16.05	2	Machined	Aluminum	8	000000	00000
25.4	14	5	Plain	27	30	36	22.45	2	Machined	Aluminum	14	0000000	00000
28	15	5	Plain	27	30	36	24.05	2	Machined	Aluminum	16	0000000	00000
32	16	5	Plain	27	30	36	25.6	2	Machined	Aluminum	18	0000000	00000
32	18	5	Plain	27	30	36	28.8	2	Machined	Aluminum	20	0000000	00000
36	20	5	Plain	27	30	36	32	2	Machined	Aluminum	24	0000000	00000
38	22	5	Plain	27	30	36	35.25	2	Machined	Aluminum	25	0000000	00000
41.3	24	5	Plain	27	30	36	38.4	2	Machined	Aluminum	26	0000000	00000
44	25	5	Plain	27	30	36	40	2	Machined	Aluminum	26	000000	00000
44.5	26	5	Plain	27	30	36	41.6	2	Machined	Aluminum	26	0000000	00000
48	27	5	Plain	27	30	36	43.2	2	Machined	Aluminum	30	0000000	00000
51	30	5	Plain	27	30	36	47.95	2	Machined	Aluminum	34	0000000	00000
54	32	5	Plain	27	30	36	51.1	2	Machined	Aluminum	38	0000000	00000
63	36	5	Plain	27	30	36	57.45	2	Machined	Aluminum	38	0000000	00000
66.7	40	5	Plain	27	30	36	63.85	2	Machined	Aluminum	40	0000000	00000
75.55	48	5	Plain	__	30	36	76.55	__	Machined	Aluminum	50	0000000	00000
94.65	60	5	Plain	__	30	36	95.65	__	Machined	Aluminum	65	0000000	00000

High-Strength Corrosion-Resistant HTD Timing Belt Pulleys

Move belts forward and backward or stop and start them in precise positions, especially in areas where rust is a concern. The curved teeth on these high-torque drive (HTD) pulleys have more surface contact with belts than traditional trapezoidal teeth, which allows you to apply more torque without damaging belts. These teeth fit together seamlessly to prevent backlash, or unwanted movement of the belt on the pulley, for a smooth, quiet cycle. These pulleys are often used in 3D printing, machine tool drives, robotics, and other applications where precision is essential. They are also known as curvilinear belt pulleys.

Pair pulleys with an HTD timing belt that has the same pitch. The width of your belt should not be larger than the maximum belt width listed.

Aluminum pulleys will not rust in damp or humid environments, but water left on the surface will cause them to corrode. Stainless steel pulleys can be wetted repeatedly without rusting or staining.

Bushing-mount pulleys grip the shaft more securely than press-fit pulleys, but require a quick-disconnect (QD) bushing or a split-tapered bushing (not included).

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

Aluminum—Press-Fit Mount

With Two Flanges

Without Flanges

With Two Flanges

Without Flanges

For 9 mm Max. Belt Wd.
OD, mm	Number of Teeth	Pitch, mm	For Shaft Dia.	Bore Type	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication	Hub Dia., mm		Each
27.79	16	5	1/4"	Finished	11.68	13.89	20.24	25.48	2	Machined	14.3	00000000	000000
31.75	18	5	1/4"	Finished	11.68	13.89	20.24	28.65	2	Machined	17.45	00000000	00000
34.93	20	5	1/4"	Finished	11.68	13.72	20.07	31.83	2	Machined	20.62	00000000	00000
41.28	24	5	1/4"	Finished	11.68	13.72	21.64	38.2	2	Machined	25.4	00000000	00000
47.63	28	5	1/4"	Finished	11.68	13.72	21.64	44.55	2	Machined	30.15	00000000	00000
53.98	32	5	1/4"	Finished	11.68	13.72	21.64	50.93	2	Machined	31.75	00000000	00000
56.16	36	5	5/16"	Finished	__	13.87	23.8	57.3	0	Machined	38.1	00000000	00000
62.51	40	5	5/16"	Finished	__	13.87	23.8	63.65	0	Machined	38.1	00000000	00000

Stainless Steel—Press-Fit Mount

For 15 mm Max. Belt Wd.
OD, mm	Number of Teeth	Pitch, mm	For Shaft Dia.	Bore Type	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication	Hub Dia., mm		Each
53.98	32	5	1/2"	Plain	17.78	21.34	47.63	49.784	2	Machined	39.37	0000000	0000000
58.17	34	5	1/2"	Plain	16.51	21.34	47.63	52.959	2	Machined	42.68	0000000	000000
66.37	36	5	1/2"	Plain	16.51	21.34	47.63	56.159	2	Machined	45.72	0000000	000000

Stainless Steel—Bushing Mount

For 15 mm Max. Belt Wd.
OD, mm	Number of Teeth	Pitch, mm	ID	Bore Type	For Bushing Style	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication		Each
67.57	40	5	1.375"	Finished	Quick Disconnect Style JA	16.51	21.34	21.34	62.509	2	Machined	0000000	0000000

High-Strength HTD Timing Belt Pulleys

These HTD (high torque drive) pulleys have a curved tooth shape that provides higher strength than trapezoidal teeth. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.

Press-fit mount pulleys come machined to the for shaft diameter size and are machinable up to the for maximum shaft diameter size.

Bushing-mount pulleys grip the shaft more securely than pulleys that press fit. Quick-disconnect (QD) bushings and split-tapered bushings sold separately.

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

Press-Fit Mount

For 15 mm Max. Belt Wd.
For Belt Trade Size	OD, mm	Number of Teeth	Pitch, mm	For Shaft Dia.	For Max. Shaft Dia.	Bore Type	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication	Material	Hub Dia., mm		Each
H5M	54.11	32	5	1/2"	7/8"	Plain	16.51	21.34	34.04	50.927	2	Machined	Black-Oxide Iron	39.37	0000000	000000
H5M	60.46	34	5	1/2"	1"	Plain	16.51	21.34	34.04	54.102	2	Machined	Black-Oxide Iron	42.67	0000000	00000
H5M	60.46	36	5	1/2"	1 1/8"	Plain	16.51	21.34	34.04	57.302	2	Machined	Black-Oxide Iron	45.72	0000000	00000

Bushing Mount

For 15 mm Max. Belt Wd.
For Belt Trade Size	OD, mm	Number of Teeth	Pitch, mm	ID	Bore Type	For Bushing Style	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication	Material		Each
H5M	69.85	40	5	1.375"	Finished	Quick Disconnect Style JA	16.51	21.34	21.34	63.652	2	Machined	Black-Oxide Iron	0000000	000000
H5M	96.52	56	5	1.871"	Finished	Quick Disconnect Style SH	16.51	21.34	21.34	89.128	2	Machined	Black-Oxide Iron	0000000	00000

High-Strength HTD Timing Belt Pulleys with Hex Bore

Mount these high torque drive (HTD) pulleys onto a hex shaft. They have curved teeth for greater contact with belts than trapezoidal teeth, so you can apply more torque without damaging the belt. The teeth fit together seamlessly to prevent unwanted belt movement for a smooth, quiet cycle. Made of aluminum, these pulleys won’t corrode in damp or humid environments. However, prolonged direct contact with water will cause corrosion over time.

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

For 9 mm Max. Belt Wd.
OD, mm	Number of Teeth	Pitch, mm	Hex Wd.	Bore Type	Inside Wd., mm	Outside Wd., mm	Overall Wd., mm	Pitch Dia., mm	Number of Flanges	Fabrication	Material		Each
32	18	5	1/2"	Finished	10.29	13.03	14.29	28.65	2	Machined	Black-Anodized Aluminum	0000000	000000
42	24	5	1/2"	Finished	10.29	12.95	14.29	38.2	2	Machined	Black-Anodized Aluminum	0000000	00000
51	30	5	1/2"	Finished	10.29	13.03	14.29	47.75	2	Machined	Black-Anodized Aluminum	0000000	00000
60	36	5	1/2"	Finished	10.29	12.95	14.29	57.3	2	Machined	Black-Anodized Aluminum	0000000	00000
For 15 mm Max. Belt Wd.
28	15	5	1/2"	Finished	19.05	20.96	22.23	23.87	2	Machined	Black-Anodized Aluminum	0000000	00000
32	18	5	1/2"	Finished	18.23	20.96	22.23	28.65	2	Machined	Black-Anodized Aluminum	0000000	00000
42	24	5	1/2"	Finished	18.23	20.96	22.23	38.2	2	Machined	Black-Anodized Aluminum	0000000	00000
51	30	5	1/2"	Finished	18.23	20.96	22.23	47.75	2	Machined	Black-Anodized Aluminum	0000000	00000
60	36	5	1/2"	Finished	18.23	20.96	22.23	57.3	2	Machined	Black-Anodized Aluminum	0000000	00000