AT5 Pulleys | McMaster-Carr

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68 Products

Timing Belt Pulleys


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.

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

	Bore Type	For Shaft Dia., mm	Pitch Dia., mm	No. of Flanges	Hub Type		Each
For AT5 Trade Size







	Corrosion-Resistant Aluminum

	10	5	12	Plain	—	19.3	2	Standard	0000000	000000


	10	5	15	Plain	—	24.1	2	Standard	0000000	00000
	10	5	20	Plain	—	32	2	Standard	0000000	00000
	10	5	22	Plain	—	35.3	2	Standard	0000000	00000
	10	5	24	Plain	—	38.4	2	Standard	0000000	00000
	10	5	27	Plain	—	43.2	2	Standard	0000000	00000
	10	5	30	Plain	8	48	2	Standard	0000000	00000
	10	5	42	Plain	8	67	2	Standard	0000000	00000
	10	5	60	Plain	8	95.7	—	Standard	0000000	00000
	16	5	12	Plain	—	19.3	2	Standard	0000000	00000
	16	5	18	Plain	—	28.8	2	Standard	0000000	00000


	16	5	20	Plain	—	32	2	Standard	0000000	00000
	16	5	22	Plain	—	35.3	2	Standard	0000000	00000
	16	5	24	Plain	—	38.4	2	Standard	0000000	00000
	16	5	25	Plain	—	40	2	Standard	0000000	00000
	16	5	26	Plain	—	41.6	2	Standard	0000000	00000
	16	5	27	Plain	8	43.2	2	Standard	0000000	00000
	16	5	28	Plain	8	44.8	2	Standard	0000000	00000
	16	5	30	Plain	8	48	2	Standard	0000000	00000
	16	5	32	Plain	8	51.1	2	Standard	0000000	00000
	16	5	36	Plain	8	57.5	2	Standard	0000000	00000


	16	5	40	Plain	8	63.9	2	Standard	0000000	00000
	16	5	42	Plain	8	67	2	Standard	0000000	00000
	16	5	44	Plain	8	70.2	—	Standard	0000000	00000
	16	5	60	Plain	8	95.7	—	Standard	0000000	000000
	25	5	16	Plain	—	25.6	2	Standard	0000000	00000
	25	5	20	Plain	—	32	2	Standard	0000000	00000
	25	5	22	Plain	—	35.3	2	Standard	0000000	00000
	25	5	24	Plain	—	38.4	2	Standard	0000000	00000
	25	5	25	Plain	—	40	2	Standard	0000000	00000
	25	5	26	Plain	—	41.6	2	Standard	0000000	00000


	25	5	27	Plain	8	43.2	2	Standard	0000000	00000
	25	5	30	Plain	8	48	2	Standard	0000000	00000
	25	5	32	Plain	8	51.1	2	Standard	0000000	00000
	25	5	40	Plain	8	63.9	2	Standard	0000000	00000
	25	5	48	Plain	8	76.6	—	Standard	0000000	000000

Timing Belts

Keep your drive system in sync. Trapezoidal teeth mesh with matching pulleys to transmit power without slipping. With the original tooth profile, these timing belts handle enough torque and synchronization for most applications. If you need high torque or precise starts and stops, consider curved tooth profiles, such as GT and HTD belts.

Abrasion-Resistant Urethane Rubber—Won’t break down or create dust while they run. Plus, they last longer than neoprene belts. Aramid or steel reinforcements provide very high strength and low stretch.

	Pitch, mm	Reinforcement Material	Temp. Range, ° F	Belt Trade No.		Each
Abrasion-Resistant Urethane Rubber







	AT5 Trade Size

	10	300	60	5	Steel	-20 to 175	10-AT5-300	0000000	000000


	10	340	68	5	Steel	-20 to 175	10-AT5-340	0000000	00000
	10	375	75	5	Steel	-20 to 175	10-AT5-375	0000000	00000
	10	390	78	5	Steel	-20 to 175	10-AT5-390	0000000	00000
	10	420	84	5	Steel	-20 to 175	10-AT5-420	0000000	00000
	10	450	90	5	Steel	-20 to 175	10-AT5-450	0000000	00000
	10	455	91	5	Steel	-20 to 175	10-AT5-455	0000000	00000
	10	480	96	5	Steel	-20 to 175	10-AT5-480	0000000	00000
	10	500	100	5	Steel	-20 to 175	10-AT5-500	0000000	00000
	10	525	105	5	Steel	-20 to 175	10-AT5-525	0000000	00000
	10	545	109	5	Steel	-20 to 175	10-AT5-545	0000000	00000


	10	600	120	5	Steel	-20 to 175	10-AT5-600	0000000	00000
	16	300	60	5	Steel	-20 to 175	16-AT5-300	0000000	00000
	16	375	75	5	Steel	-20 to 175	16-AT5-375	0000000	00000
	16	390	78	5	Steel	-20 to 175	16-AT5-390	0000000	00000
	16	420	84	5	Steel	-20 to 175	16-AT5-420	0000000	00000
	16	450	90	5	Steel	-20 to 175	16-AT5-450	0000000	00000
	16	455	91	5	Steel	-20 to 175	16-AT5-455	0000000	00000
	16	480	96	5	Steel	-20 to 175	16-AT5-480	0000000	00000
	16	525	105	5	Steel	-20 to 175	16-AT5-525	0000000	00000
	16	545	109	5	Steel	-20 to 175	16-AT5-545	0000000	00000


	16	600	120	5	Steel	-20 to 175	16-AT5-600	0000000	00000
	25	300	60	5	Steel	-20 to 175	25-AT5-300	0000000	00000
	25	375	75	5	Steel	-20 to 175	25-AT5-375	0000000	00000
	25	390	78	5	Steel	-20 to 175	25-AT5-390	0000000	00000
	25	420	84	5	Steel	-20 to 175	25-AT5-420	0000000	00000
	25	450	90	5	Steel	-20 to 175	25-AT5-450	0000000	00000
	25	455	91	5	Steel	-20 to 175	25-AT5-455	0000000	00000
	25	480	96	5	Steel	-20 to 175	25-AT5-480	0000000	00000
	25	525	105	5	Steel	-20 to 175	25-AT5-525	0000000	00000
	25	545	109	5	Steel	-20 to 175	25-AT5-545	0000000	00000


	25	600	120	5	Steel	-20 to 175	25-AT5-600	0000000	00000