AT Series Timing Belt Pulleys

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AT5

AT10

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For Maximum Belt Width

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Shaft Diameter

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Overall Width

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Number of Flanges

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125 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.

	For Max. Belt Wd., mm	Pitch, mm	No. of Teeth	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


				For AT10 Trade Size







								Corrosion-Resistant Aluminum

16	10							18	Plain	10	57.3	2	Standard	00000000	00000


16	10							20	Plain	12	63.7	2	Standard	00000000	00000
16	10	22						Plain	12	70	2	Standard	00000000	00000
16	10	24	Plain					12	76.4	2	Standard	00000000	00000
16	10	25	Plain					12	79.6	2	Standard	00000000	00000
16	10	27	Plain					12	86	2	Standard	00000000	00000
16	10	30	Plain					12	95.5	2	Standard	00000000	00000
16	10	32	Plain					12	101.9	2	Standard	00000000	00000
16	10	36	Plain					16	114.6	2	Standard	00000000	00000
16	10	40	Plain					16	127.3	2	Standard	00000000	000000
16	10	44	Plain					16	140.1	2	Standard	00000000	000000


16	10	48	Plain					16	152.8	—	Standard	00000000	000000
16	10	60	Plain					16	191	—	Standard	00000000	000000
25	10	18	Plain					10	57.3	2	Standard	0000000	00000
25	10	20	Plain					12	63.7	2	Standard	0000000	00000
25	10	22	Plain					12	70	2	Standard	0000000	00000
25	10	24	Plain					12	76.4	2	Standard	0000000	00000
25	10	25	Plain					12	79.6	2	Standard	0000000	00000
25	10	27	Plain					12	86	2	Standard	0000000	00000
25	10	30	Plain					12	95.5	2	Standard	0000000	00000
25	10	32	Plain					12	101.9	2	Standard	0000000	00000


25	10	36	Plain					16	114.6	2	Standard	0000000	000000
25	10	40	Plain					16	127.3	2	Standard	0000000	000000
25	10	44	Plain					16	140.1	2	Standard	0000000	000000
25	10	48	Plain					16	152.8	—	Standard	0000000	000000
25	10	60	Plain					16	191	—	Standard	0000000	000000
50	10	18	Plain					10	57.3	2	Standard	00000000	00000
50	10	20	Plain					12	63.7	2	Standard	00000000	00000
50	10	22	Plain					12	70	2	Standard	00000000	00000
50	10	24	Plain					12	76.4	2	Standard	00000000	000000
50	10	25	Plain					12	79.6	2	Standard	00000000	000000


50	10	27	Plain					12	86	2	Standard	00000000	000000
50	10	30	Plain					12	95.5	2	Standard	00000000	000000
50	10	32	Plain					12	101.9	2	Standard	00000000	000000
50	10	36	Plain					16	114.6	2	Standard	00000000	000000
50	10	40	Plain					16	127.3	2	Standard	00000000	000000
50	10	44	Plain					16	140.1	2	Standard	00000000	000000
50	10	48	Plain					16	152.8	—	Standard	00000000	000000
50	10	60	Plain					16	191	—	Standard	00000000	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.

	Wd., mm	Outer Circle, mm	No. of Teeth	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




						AT10 Trade Size

						16	500	50	10	Steel	-20 to 175	16-AT10-500	0000000	00000


						16	560	56	10	Steel	-20 to 175	16-AT10-560	0000000	00000
						16	660	66	10	Steel	-20 to 175	16-AT10-660	0000000	00000
						16	700	70	10	Steel	-20 to 175	16-AT10-700	0000000	00000
						16	780	78	10	Steel	-20 to 175	16-AT10-780	0000000	00000
						16	800	80	10	Steel	-20 to 175	16-AT10-800	0000000	00000
						16	840	84	10	Steel	-20 to 175	16-AT10-840	0000000	00000
16						890	89	10	Steel	-20 to 175	16-AT10-890	0000000	00000
25	500					50	10	Steel	-20 to 175	25-AT10-500	0000000	00000
25	560					56	10	Steel	-20 to 175	25-AT10-560	0000000	00000
25	660					66	10	Steel	-20 to 175	25-AT10-660	0000000	00000


25	700	70	10			Steel	-20 to 175	25-AT10-700	0000000	00000
25	780	78	10			Steel	-20 to 175	25-AT10-780	0000000	00000
25	800	80	10			Steel	-20 to 175	25-AT10-800	0000000	00000
25	840	84	10			Steel	-20 to 175	25-AT10-840	0000000	00000
25	890	89	10			Steel	-20 to 175	25-AT10-890	0000000	00000

Cut-to-Length Timing Belts

Use these timing belts for linear applications or join the ends to create a custom belt. Their 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 a GT tooth profile.

End Plates—Interlock with belt teeth to clamp them tightly in place without slippage.

	Timing Belts							End Plates
	Wd., mm	Pitch, mm	Reinforcement Material	Temp. Range, ° F	Max. Continuous Lg., ft.		Per Ft.		Each
Abrasion-Resistant Urethane Rubber







				AT10 Trade Size

				25	10	Steel	32 to 176	82	000000	000000	0000000	000000