5 mm Pitch Sprockets | McMaster-Carr

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For Maximum Belt Width

3/8"

9 mm

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Number of Flanges

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47 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.

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

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).

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.

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.

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