Miniature Pulleys | McMaster-Carr

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System of Measurement

Inch

Metric

For Maximum Belt Width

Shaft Diameter

Number of Teeth

Width

Material

Number of Flanges

Overall Width

Pitch Diameter

Bore Type

Hub Diameter

Inside Width

Outside Width

Hub Type

REACH

RoHS

Fabrication

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Performance

142 Products

Performance

Corrosion Resistant

Won't rust when exposed to water

99 products

Bore Type

Finished

Mount onto the shaft—no machining necessary

99 products

Bore Type

Plain

Machine to your exact shaft size, or add a set screw or keyway

43 products

For Shaft Type

Round

Secure to a round shaft with a set screw

99 products

Timing Belt Pulleys


Finished Bore

Keep your drive system in sync. Trapezoidal teeth mesh with matching belts to synchronize motion. With the original tooth profile, these pulleys handle enough torque for most applications. If you need high torque or precise starts and stops, consider curved tooth profiles, such as GT and HTD pulleys.

Corrosion-Resistant Aluminum—Won't rust in wet environments and one-third the weight of steel and iron. However, aluminum pulleys are not as strong as iron and steel.

Finished Bore—Mount these pulleys onto the shaft and secure with a set screw—no machining required.

	For Max. Belt Wd.	Pitch	No. of Teeth	Bore Type	For Shaft Dia.	Pitch Dia.	No. of Flanges	Hub Type		Each
For MXL Trade Size







				Corrosion-Resistant Aluminum

				1/8"	0.080"	10	Finished	1/8"	0.255"	1	Standard	0000000	000000


				1/8"	0.080"	11	Finished	1/8"	0.28"	1	Standard	0000000	00000
				1/8"	0.080"	12	Finished	1/8"	0.306"	1	Standard	0000000	00000
				1/8"	0.080"	14	Finished	1/8"	0.357"	1	Standard	0000000	00000
				1/8"	0.080"	15	Finished	3/16"	0.382"	1	Standard	0000000	00000
				1/8"	0.080"	16	Finished	3/16"	0.407"	1	Standard	0000000	00000
				1/8"	0.080"	18	Finished	3/16"	0.458"	2	Standard	0000000	00000
				1/8"	0.080"	20	Finished	1/4"	0.509"	1	Standard	0000000	00000
				1/8"	0.080"	21	Finished	1/4"	0.535"	1	Standard	0000000	00000
				1/8"	0.080"	22	Finished	1/4"	0.56"	1	Standard	0000000	00000
				1/8"	0.080"	24	Finished	1/4"	0.611"	2	Standard	0000000	00000


				1/8"	0.080"	28	Finished	1/4"	0.713"	2	Standard	0000000	00000
				1/8"	0.080"	30	Finished	1/4"	0.764"	2	Standard	0000000	00000
				1/8"	0.080"	36	Finished	1/4"	0.917"	2	Standard	0000000	00000
				1/8"	0.080"	40	Finished	1/4"	1.019"	2	Standard	0000000	00000
				1/8"	0.080"	42	Finished	1/4"	1.07"	2	Standard	0000000	00000
				1/8"	0.080"	60	Finished	1/4"	1.53"	2	Standard	0000000	00000
				1/4"	0.080"	10	Finished	1/8"	0.255"	1	Standard	0000000	00000
				1/4"	0.080"	11	Finished	1/8"	0.28"	1	Standard	0000000	00000
				1/4"	0.080"	12	Finished	1/8"	0.306"	1	Standard	0000000	00000
				1/4"	0.080"	14	Finished	1/8"	0.357"	1	Standard	0000000	00000


				1/4"	0.080"	15	Finished	3/16"	0.382"	1	Standard	0000000	00000
				1/4"	0.080"	16	Finished	3/16"	0.407"	1	Standard	0000000	00000
				1/4"	0.080"	18	Finished	3/16"	0.458"	2	Standard	0000000	00000
				1/4"	0.080"	20	Finished	1/4"	0.509"	1	Standard	0000000	00000
				1/4"	0.080"	21	Finished	1/4"	0.535"	1	Standard	0000000	00000
				1/4"	0.080"	22	Finished	1/4"	0.56"	1	Standard	0000000	00000
				1/4"	0.080"	24	Finished	1/4"	0.611"	2	Standard	0000000	00000
				1/4"	0.080"	28	Finished	1/4"	0.713"	2	Standard	0000000	00000
				1/4"	0.080"	30	Finished	1/4"	0.764"	2	Standard	0000000	00000
				1/4"	0.080"	36	Finished	1/4"	0.917"	2	Standard	0000000	00000


				1/4"	0.080"	40	Finished	1/4"	1.019"	2	Standard	0000000	00000
				1/4"	0.080"	42	Finished	1/4"	1.07"	2	Standard	0000000	00000
				1/4"	0.080"	60	Finished	1/4"	1.53"	2	Standard	0000000	00000
				3 mm	0.080"	10	Finished	3 mm	6.5 mm	1	Standard	00000000	00000
				3 mm	0.080"	11	Finished	3 mm	7.1 mm	1	Standard	00000000	00000
				3 mm	0.080"	12	Finished	3 mm	7.8 mm	1	Standard	00000000	00000
				3 mm	0.080"	14	Finished	3 mm	9.1 mm	1	Standard	00000000	00000
				3 mm	0.080"	15	Finished	4 mm	9.7 mm	1	Standard	00000000	00000
				3 mm	0.080"	16	Finished	4 mm	10.3 mm	1	Standard	00000000	00000
				3 mm	0.080"	18	Finished	4 mm	11.6 mm	2	Standard	00000000	00000


				3 mm	0.080"	18	Finished	6 mm	11.6 mm	1	Standard	00000000	00000
				3 mm	0.080"	20	Finished	4 mm	12.9 mm	2	Standard	00000000	00000
				3 mm	0.080"	20	Finished	6 mm	12.9 mm	1	Standard	00000000	00000
				3 mm	0.080"	22	Finished	4 mm	14.2 mm	2	Standard	00000000	00000
3 mm				0.080"	22	Finished	6 mm	14.2 mm	1	Standard	00000000	00000
3 mm	0.080"			24	Finished	6 mm	15.5 mm	2	Standard	00000000	00000
3 mm	0.080"			25	Finished	6 mm	16.2 mm	2	Standard	00000000	00000
3 mm	0.080"			28	Finished	6 mm	18.1 mm	2	Standard	00000000	00000
3 mm	0.080"			30	Finished	6 mm	19.4 mm	2	Standard	00000000	00000
3 mm	0.080"	32		Finished	6 mm	20.7 mm	2	Standard	00000000	00000
3 mm	0.080"	36	Finished	6 mm	23.3 mm	2	Standard	00000000	00000
3 mm	0.080"	40	Finished	6 mm	25.9 mm	2	Standard	00000000	00000
3 mm	0.080"	42	Finished	6 mm	27.2 mm	2	Standard	00000000	00000
3 mm	0.080"	44	Finished	6 mm	28.5 mm	2	Standard	00000000	00000
3 mm	0.080"	60	Finished	6 mm	38.8 mm	2	Standard	00000000	00000
6 mm	0.080"	10	Finished	3 mm	6.5 mm	1	Standard	00000000	00000
6 mm	0.080"	12	Finished	3 mm	7.8 mm	1	Standard	00000000	00000
6 mm	0.080"	14	Finished	3 mm	9.1 mm	1	Standard	00000000	00000
6 mm	0.080"	15	Finished	4 mm	9.7 mm	1	Standard	00000000	00000
6 mm	0.080"	16	Finished	4 mm	10.3 mm	1	Standard	00000000	00000
6 mm	0.080"	18	Finished	4 mm	11.6 mm	2	Standard	00000000	00000
6 mm	0.080"	18	Finished	6 mm	11.6 mm	1	Standard	00000000	00000
6 mm	0.080"	20	Finished	4 mm	12.9 mm	2	Standard	00000000	00000
6 mm	0.080"	20	Finished	6 mm	12.9 mm	1	Standard	00000000	00000
6 mm	0.080"	22	Finished	4 mm	14.2 mm	2	Standard	00000000	00000
6 mm	0.080"	22	Finished	6 mm	14.2 mm	1	Standard	00000000	00000
6 mm	0.080"	24	Finished	6 mm	15.5 mm	2	Standard	00000000	00000
6 mm	0.080"	28	Finished	6 mm	18.1 mm	2	Standard	00000000	00000
6 mm	0.080"	30	Finished	6 mm	19.4 mm	2	Standard	00000000	00000
6 mm	0.080"	32	Finished	6 mm	20.7 mm	2	Standard	00000000	00000
6 mm	0.080"	36	Finished	6 mm	23.3 mm	2	Standard	00000000	00000
6 mm	0.080"	40	Finished	6 mm	25.9 mm	2	Standard	00000000	00000
6 mm	0.080"	42	Finished	6 mm	27.2 mm	2	Standard	00000000	00000
6 mm	0.080"	48	Finished	6 mm	31 mm	2	Standard	00000000	00000
6 mm	0.080"	60	Finished	6 mm	38.8 mm	—	Standard	00000000	00000
6 mm	0.080"	60	Finished	6 mm	38.8 mm	2	Standard	00000000	00000
6 mm	0.080"	80	Finished	8 mm	51.7 mm	—	Standard	00000000	00000
6 mm	0.080"	90	Finished	8 mm	58.2 mm	—	Standard	00000000	00000
6 mm	0.080"	100	Finished	8 mm	64.7 mm	—	Standard	00000000	00000
6 mm	0.080"	120	Finished	10 mm	77.6 mm	—	Standard	00000000	00000
9 mm	0.080"	10	Finished	3 mm	6.5 mm	1	Standard	00000000	00000
9 mm	0.080"	14	Finished	3 mm	9.1 mm	1	Standard	00000000	00000
9 mm	0.080"	15	Finished	4 mm	9.7 mm	1	Standard	00000000	00000
9 mm	0.080"	16	Finished	4 mm	10.3 mm	1	Standard	00000000	00000
9 mm	0.080"	18	Finished	6 mm	11.6 mm	1	Standard	00000000	00000
9 mm	0.080"	20	Finished	6 mm	12.9 mm	1	Standard	00000000	00000
9 mm	0.080"	21	Finished	6 mm	13.6 mm	1	Standard	00000000	00000
9 mm	0.080"	22	Finished	6 mm	14.2 mm	1	Standard	00000000	00000
9 mm	0.080"	30	Finished	6 mm	19.4 mm	2	Standard	00000000	00000
9 mm	0.080"	32	Finished	6 mm	20.7 mm	2	Standard	00000000	00000
9 mm	0.080"	48	Finished	6 mm	31 mm	2	Standard	00000000	00000
9 mm	0.080"	60	Finished	6 mm	38.8 mm	—	Standard	00000000	00000
9 mm	0.080"	60	Finished	6 mm	38.8 mm	2	Standard	00000000	00000
9 mm	0.080"	72	Finished	6 mm	46.6 mm	—	Standard	00000000	00000
9 mm	0.080"	80	Finished	8 mm	51.7 mm	—	Standard	00000000	00000
9 mm	0.080"	90	Finished	8 mm	58.2 mm	—	Standard	00000000	00000
9 mm	0.080"	100	Finished	8 mm	64.7 mm	—	Standard	00000000	00000
9 mm	0.080"	120	Finished	10 mm	77.6 mm	—	Standard	00000000	00000

Plastic Timing Belt Pulleys

Naturally rust resistant and lightweight, these plastic pulleys are ideal for machines that require frequent washdowns. Trapezoidal teeth, the original tooth profile, mesh with matching belts to transmit power without slipping.

Plain Bore—Do it your way—machine the bore to your exact shaft size or add a set screw or keyway.

Flush Hub—Ideal in tight spots where a raised hub would get in the way.

	Bore Type	For Shaft Dia.	Pitch Dia.	No. of Flanges	Hub Type		Each
For MXL Trade Size







	Polycarbonate

	1/4"	0.080"	10	Plain	3/32"	0.255"	1	Standard	0000000	00000


	1/4"	0.080"	12	Plain	3/32"	0.306"	1	Standard	0000000	0000
	1/4"	0.080"	14	Plain	1/8"	0.357"	1	Standard	0000000	0000
	1/4"	0.080"	15	Plain	1/8"	0.382"	1	Standard	0000000	0000
	1/4"	0.080"	16	Plain	1/8"	0.407"	1	Standard	0000000	0000
	1/4"	0.080"	18	Plain	3/16"	0.458"	2	Standard	0000000	0000
	1/4"	0.080"	20	Plain	3/16"	0.509"	2	Standard	0000000	0000
	1/4"	0.080"	21	Plain	3/16"	0.535"	2	Standard	0000000	0000
	1/4"	0.080"	22	Plain	3/16"	0.56"	2	Standard	000000	0000
	1/4"	0.080"	24	Plain	3/16"	0.611"	2	Standard	0000000	0000
	1/4"	0.080"	28	Plain	1/4"	0.713"	2	Standard	0000000	0000


	1/4"	0.080"	30	Plain	1/4"	0.764"	2	Standard	0000000	0000
	1/4"	0.080"	36	Plain	1/4"	0.917"	2	Standard	0000000	0000
	1/4"	0.080"	40	Plain	1/4"	1.019"	2	Standard	0000000	0000
	1/4"	0.080"	42	Plain	1/4"	1.07"	2	Standard	0000000	0000
	1/4"	0.080"	60	Plain	1/4"	1.53"	2	Standard	0000000	0000
	6 mm	0.080"	10	Plain	3 mm	6.5 mm	1	Standard	0000000	0000
	6 mm	0.080"	10	Plain	3 mm	6.5 mm	2	Standard	0000000	00000
	6 mm	0.080"	14	Plain	4 mm	9.1 mm	1	Standard	0000000	0000
	6 mm	0.080"	14	Plain	4 mm	9.1 mm	2	Standard	0000000	00000
	6 mm	0.080"	15	Plain	4 mm	9.7 mm	2	Standard	0000000	00000


	6 mm	0.080"	16	Plain	4 mm	10.3 mm	2	Standard	0000000	00000
	6 mm	0.080"	18	Plain	6 mm	11.6 mm	1	Standard	0000000	0000
	6 mm	0.080"	18	Plain	6 mm	11.6 mm	2	Standard	0000000	00000
	6 mm	0.080"	18	Plain	8 mm	11.6 mm	1	Standard	0000000	0000
	6 mm	0.080"	18	Plain	8 mm	11.6 mm	2	Standard	0000000	00000
	6 mm	0.080"	20	Plain	8 mm	12.9 mm	1	Standard	0000000	00000
	6 mm	0.080"	20	Plain	8 mm	12.9 mm	2	Standard	0000000	00000
	6 mm	0.080"	26	Plain	8 mm	16.8 mm	2	Standard	0000000	00000
	6 mm	0.080"	30	Plain	8 mm	19.4 mm	1	Standard	0000000	00000
	6 mm	0.080"	30	Plain	8 mm	19.4 mm	2	Standard	0000000	00000


	6 mm	0.080"	32	Plain	8 mm	20.7 mm	1	Standard	0000000	00000
	6 mm	0.080"	36	Plain	8 mm	23.3 mm	2	Flush	0000000	00000
	6 mm	0.080"	36	Plain	8 mm	23.3 mm	2	Standard	0000000	00000
	6 mm	0.080"	40	Plain	8 mm	25.9 mm	2	Flush	0000000	00000
	6 mm	0.080"	40	Plain	8 mm	25.9 mm	2	Standard	0000000	00000
	6 mm	0.080"	60	Plain	8 mm	38.8 mm	2	Standard	0000000	00000
	6 mm	0.080"	65	Plain	8 mm	42 mm	2	Standard	0000000	00000
	6 mm	0.080"	90	Plain	8 mm	58.2 mm	2	Standard	0000000	00000
	6 mm	0.080"	100	Plain	8 mm	64.7 mm	1	Standard	0000000	00000
	6 mm	0.080"	120	Plain	8 mm	77.6 mm	2	Standard	0000000	00000


	6 mm	0.080"	130	Plain	8 mm	84.1 mm	1	Standard	0000000	00000
	6 mm	0.080"	130	Plain	8 mm	84.1 mm	2	Standard	0000000	00000