8 mm Shaft Diameter Chain and Belt Pulleys

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System of Measurement

Number of Teeth

For Maximum Belt Width

Pitch

Belt Trade Size

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Hub Type

Material

Number of Flanges

Hub Diameter

Width

Tooth Profile

Overall Width

Shaft Type

Inside Width

Pulley Type

Outside Width

Shaft Mount Type

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

Exempt

REACH

Compliant

RoHS

Compliant

Export Control Classification Number (ECCN)

EAR99

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70 Products

Performance

Corrosion Resistant

Won't rust when exposed to water

41 products

Bore Type

Finished

Mount onto the shaft—no machining necessary

34 products

Bore Type

Plain

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

36 products

For Shaft Type

Round

Secure to a round shaft with a set screw

34 products

Timing Belt Pulleys


Finished Bore	Plain 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.

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.

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







				Corrosion-Resistant Aluminum

				6 mm	0.080"	80	Finished	8	51.7 mm	—	Standard	1375K162	000000


				6 mm	0.080"	90	Finished	8	58.2 mm	—	Standard	1375K164	00000
				6 mm	0.080"	100	Finished	8	64.7 mm	—	Standard	1375K166	00000
				9 mm	0.080"	80	Finished	8	51.7 mm	—	Standard	1375K163	00000
				9 mm	0.080"	90	Finished	8	58.2 mm	—	Standard	1375K165	00000
				9 mm	0.080"	100	Finished	8	64.7 mm	—	Standard	1375K167	00000


				For XL Trade Size







								Corrosion-Resistant Aluminum

								3/8"	0.200"	14	Finished	8	0.89"	2	Flush	1277N778	00000


								3/8"	0.200"	14	Finished	8	0.89"	2	Standard	1277N714	00000
								3/8"	0.200"	15	Finished	8	0.96"	2	Flush	1277N779	00000
								3/8"	0.200"	15	Finished	8	0.96"	2	Standard	1277N715	00000
								3/8"	0.200"	16	Finished	8	1.02"	2	Flush	1277N781	00000
								3/8"	0.200"	16	Finished	8	1.02"	2	Standard	1277N716	00000
								3/8"	0.200"	18	Finished	8	1.15"	2	Flush	1277N782	00000
								3/8"	0.200"	18	Finished	8	1.15"	2	Standard	1277N717	00000
								3/8"	0.200"	20	Finished	8	1.27"	2	Flush	1277N783	00000
								3/8"	0.200"	20	Finished	8	1.27"	2	Standard	1277N718	00000
								3/8"	0.200"	22	Finished	8	1.4"	2	Flush	1277N784	00000


								3/8"	0.200"	22	Finished	8	1.4"	2	Standard	1277N719	00000
								3/8"	0.200"	24	Finished	8	1.53"	2	Flush	1277N785	00000
								3/8"	0.200"	24	Finished	8	1.53"	2	Standard	1277N721	00000
								3/8"	0.200"	28	Finished	8	1.78"	2	Flush	1277N786	00000
								3/8"	0.200"	28	Finished	8	1.79"	2	Standard	1277N722	00000
								3/8"	0.200"	30	Finished	8	1.91"	2	Flush	1277N787	00000
								3/8"	0.200"	32	Finished	8	2.04"	2	Standard	1277N724	00000


								For AT5 Trade Size







												Corrosion-Resistant Aluminum

												10 mm	5 mm	30	Plain	8	48 mm	2	Standard	3709N25	00000


10 mm	5 mm											42	Plain	8	67 mm	2	Standard	3709N29	00000
10 mm	5 mm											60	Plain	8	95.7 mm	—	Standard	3709N33	00000
16 mm	5 mm											27	Plain	8	43.2 mm	2	Standard	3709N46	00000
16 mm	5 mm	28										Plain	8	44.8 mm	2	Standard	3709N47	00000
16 mm	5 mm	30	Plain									8	48 mm	2	Standard	3709N48	00000
16 mm	5 mm	32	Plain									8	51.1 mm	2	Standard	3709N49	00000
16 mm	5 mm	36	Plain									8	57.5 mm	2	Standard	3709N51	00000
16 mm	5 mm	40	Plain									8	63.9 mm	2	Standard	3709N52	00000
16 mm	5 mm	42	Plain									8	67 mm	2	Standard	3709N53	00000
16 mm	5 mm	44	Plain									8	70.2 mm	—	Standard	3709N54	00000


16 mm	5 mm	60	Plain									8	95.7 mm	—	Standard	3709N56	000000
25 mm	5 mm	27	Plain									8	43.2 mm	2	Standard	3709N69	00000
25 mm	5 mm	30	Plain									8	48 mm	2	Standard	3709N72	00000
25 mm	5 mm	32	Plain									8	51.1 mm	2	Standard	3709N73	00000
25 mm	5 mm	40	Plain									8	63.9 mm	2	Standard	3709N75	00000
25 mm	5 mm	48	Plain									8	76.6 mm	—	Standard	3709N78	000000

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.

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

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., mm	Pitch Dia.	No. of Flanges	Hub Type		Each
For MXL Trade Size







	Polycarbonate

	6 mm	0.080"	18	Plain	8	11.6 mm	1	Standard	7717N26	00000


	6 mm	0.080"	18	Plain	8	11.6 mm	2	Standard	7717N24	00000
	6 mm	0.080"	20	Plain	8	12.9 mm	1	Standard	7717N29	00000
	6 mm	0.080"	20	Plain	8	12.9 mm	2	Standard	7717N28	00000
	6 mm	0.080"	26	Plain	8	16.8 mm	2	Standard	7717N47	00000
	6 mm	0.080"	30	Plain	8	19.4 mm	1	Standard	7717N58	00000
	6 mm	0.080"	30	Plain	8	19.4 mm	2	Standard	7717N56	00000
	6 mm	0.080"	32	Plain	8	20.7 mm	1	Standard	7717N62	00000
	6 mm	0.080"	36	Plain	8	23.3 mm	2	Flush	7717N64	00000
	6 mm	0.080"	36	Plain	8	23.3 mm	2	Standard	7717N65	00000
	6 mm	0.080"	40	Plain	8	25.9 mm	2	Flush	7717N68	00000


	6 mm	0.080"	40	Plain	8	25.9 mm	2	Standard	7717N69	00000
	6 mm	0.080"	60	Plain	8	38.8 mm	2	Standard	7717N83	00000
	6 mm	0.080"	65	Plain	8	42 mm	2	Standard	7717N85	00000
	6 mm	0.080"	90	Plain	8	58.2 mm	2	Standard	7717N89	00000
	6 mm	0.080"	100	Plain	8	64.7 mm	1	Standard	7717N93	00000
	6 mm	0.080"	120	Plain	8	77.6 mm	2	Standard	7717N96	00000
	6 mm	0.080"	130	Plain	8	84.1 mm	1	Standard	7717N99	00000
	6 mm	0.080"	130	Plain	8	84.1 mm	2	Standard	7717N98	00000


	For XL Trade Size







					Acetal

					3/8"	0.200"	14	Finished	8	0.89"	2	Standard	3563N14	00000


					3/8"	0.200"	15	Finished	8	0.96"	2	Standard	3563N15	00000
					3/8"	0.200"	16	Finished	8	1.02"	2	Standard	3563N16	00000
					3/8"	0.200"	18	Finished	8	1.15"	2	Standard	3563N17	00000
					3/8"	0.200"	20	Finished	8	1.27"	2	Standard	3563N18	00000
					3/8"	0.200"	21	Finished	8	1.34"	2	Standard	3563N19	00000
					3/8"	0.200"	22	Finished	8	1.4"	2	Standard	3563N21	00000
					3/8"	0.200"	24	Finished	8	1.53"	2	Standard	3563N22	00000
					3/8"	0.200"	26	Finished	8	1.66"	2	Standard	3563N23	00000
					3/8"	0.200"	28	Finished	8	1.78"	2	Standard	3563N24	00000