12mm Shaft Diameter Chain and Belt Pulleys

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

REACH

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Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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30 Products

Performance

Corrosion Resistant

Won't rust when exposed to water

28 products

Bore Type

Finished

Mount onto the shaft—no machining necessary

9 products

Bore Type

Plain

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

21 products

For Shaft Type

Round

Secure to a round shaft with a set screw

9 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.

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







		Corrosion-Resistant Aluminum

		3/8"	0.200"	32	Finished	12	2.04"	2	Standard	1277N725	000000


		3/8"	0.200"	40	Finished	12	2.55"	—	Standard	1277N728	00000
		3/8"	0.200"	48	Finished	12	3.06"	—	Standard	1277N732	00000
		3/8"	0.200"	60	Finished	12	3.82"	—	Standard	1277N733	00000
		3/8"	0.200"	72	Finished	12	4.58"	—	Standard	1277N734	00000


		For L Trade Size







						Corrosion-Resistant Aluminum

						1/2"	0.375"	14	Finished	12	1.67"	2	Standard	3567N14	00000


						1/2"	0.375"	15	Finished	12	1.79"	2	Standard	3567N15	00000


						For AT10 Trade Size







										Corrosion-Resistant Aluminum

										16 mm	10 mm	20	Plain	12	63.7 mm	2	Standard	3709N802	00000


										16 mm	10 mm	22	Plain	12	70 mm	2	Standard	3709N803	00000
										16 mm	10 mm	24	Plain	12	76.4 mm	2	Standard	3709N804	00000
										16 mm	10 mm	25	Plain	12	79.6 mm	2	Standard	3709N805	00000
										16 mm	10 mm	27	Plain	12	86 mm	2	Standard	3709N806	00000
										16 mm	10 mm	30	Plain	12	95.5 mm	2	Standard	3709N807	00000
										16 mm	10 mm	32	Plain	12	101.9 mm	2	Standard	3709N808	00000
										25 mm	10 mm	20	Plain	12	63.7 mm	2	Standard	1326N52	00000
										25 mm	10 mm	22	Plain	12	70 mm	2	Standard	1326N53	00000
										25 mm	10 mm	24	Plain	12	76.4 mm	2	Standard	1326N54	00000
										25 mm	10 mm	25	Plain	12	79.6 mm	2	Standard	1326N55	00000


										25 mm	10 mm	27	Plain	12	86 mm	2	Standard	1326N56	00000
										25 mm	10 mm	30	Plain	12	95.5 mm	2	Standard	1326N57	00000
										25 mm	10 mm	32	Plain	12	101.9 mm	2	Standard	1326N58	00000
										50 mm	10 mm	20	Plain	12	63.7 mm	2	Standard	3709N816	00000
										50 mm	10 mm	22	Plain	12	70 mm	2	Standard	3709N817	00000
50 mm										10 mm	24	Plain	12	76.4 mm	2	Standard	3709N818	000000
50 mm	10 mm									25	Plain	12	79.6 mm	2	Standard	3709N819	000000
50 mm	10 mm									27	Plain	12	86 mm	2	Standard	3709N821	000000
50 mm	10 mm									30	Plain	12	95.5 mm	2	Standard	3709N822	000000
50 mm	10 mm									32	Plain	12	101.9 mm	2	Standard	3709N823	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.

	Bore Type	For Shaft Dia., mm	Pitch Dia.	No. of Flanges	Hub Type		Each
For XL Trade Size







	Acetal

	3/8"	0.200"	48	Finished	12	3.06"	2	Standard	3563N32	000000


	3/8"	0.200"	60	Finished	12	3.82"	—	Standard	3563N33	00000