144MXL Timing Belts | McMaster-Carr

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Belt Trade Size

MXL

XXH

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Shaft Diameter

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Belt Trade Number

Reinforcement Material

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Exempt

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

Yes

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362 Products

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.

Neoprene—Durable and weather resistant, but lose elasticity if exposed to oil and fuel. These belts are reinforced, so they're strong enough to transmit power without stretching. Plus, nylon-coated teeth minimize friction and protect the surface from wear.

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.	Outer Circle	No. of Teeth	Pitch	Reinforcement Material	Tooth Finish	Temp. Range, ° F	Belt Trade No.		Each
Neoprene







				MXL Trade Size

				1/8"	3.2"	40	0.080"	Fiberglass	Nylon Coated	-20 to 212	32MXL012	7887K211	00000


				1/8"	3.6"	45	0.080"	Fiberglass	Nylon Coated	-20 to 212	36MXL012	7887K11	0000
				1/8"	4"	50	0.080"	Fiberglass	Nylon Coated	-20 to 212	40MXL012	7887K12	0000
				1/8"	4.4"	55	0.080"	Fiberglass	Nylon Coated	-20 to 212	44MXL012	7887K13	0000
				1/8"	4.8"	60	0.080"	Fiberglass	Nylon Coated	-20 to 212	48MXL012	7887K14	0000
				1/8"	5.6"	70	0.080"	Fiberglass	Nylon Coated	-20 to 212	56MXL012	7887K15	0000
				1/8"	6.4"	80	0.080"	Fiberglass	Nylon Coated	-20 to 212	64MXL012	7887K16	0000
				1/8"	6.8"	85	0.080"	Fiberglass	Nylon Coated	-20 to 212	68MXL012	7887K17	0000
				1/8"	7.2"	90	0.080"	Fiberglass	Nylon Coated	-20 to 212	72MXL012	7887K18	0000
				1/8"	7.6"	95	0.080"	Fiberglass	Nylon Coated	-20 to 212	76MXL012	7887K19	0000
				1/8"	8"	100	0.080"	Fiberglass	Nylon Coated	-20 to 212	80MXL012	7887K2	0000


				1/8"	8.4"	105	0.080"	Fiberglass	Nylon Coated	-20 to 212	84MXL012	7887K212	0000
				1/8"	8.8"	110	0.080"	Fiberglass	Nylon Coated	-20 to 212	88MXL012	7887K21	0000
				1/8"	9.1"	114	0.080"	Fiberglass	Nylon Coated	-20 to 212	91MXL012	7887K213	0000
				1/8"	9.6"	120	0.080"	Fiberglass	Nylon Coated	-20 to 212	96MXL012	7887K22	0000
				1/8"	10.4"	130	0.080"	Fiberglass	Nylon Coated	-20 to 212	104MXL012	7887K23	0000
				1/8"	11.2"	140	0.080"	Fiberglass	Nylon Coated	-20 to 212	112MXL012	7887K24	0000
				1/8"	11.5"	144	0.080"	Fiberglass	Nylon Coated	-20 to 212	115MXL012	7887K214	0000
				1/8"	12"	150	0.080"	Fiberglass	Nylon Coated	-20 to 212	120MXL012	7887K25	0000
				1/8"	12.2"	153	0.080"	Fiberglass	Nylon Coated	-20 to 212	122MXL012	7887K215	0000
				1/8"	12.4"	155	0.080"	Fiberglass	Nylon Coated	-20 to 212	124MXL012	7887K216	0000


				1/8"	13.2"	165	0.080"	Fiberglass	Nylon Coated	-20 to 212	132MXL012	7887K26	0000
				1/8"	14"	175	0.080"	Fiberglass	Nylon Coated	-20 to 212	140MXL012	7887K27	0000
				1/8"	14.7"	184	0.080"	Fiberglass	Nylon Coated	-20 to 212	147MXL012	7887K217	0000
				1/8"	15.2"	190	0.080"	Fiberglass	Nylon Coated	-20 to 212	152MXL012	7887K28	0000
				1/8"	16"	200	0.080"	Fiberglass	Nylon Coated	-20 to 212	160MXL012	7887K29	0000
				1/8"	16.8"	210	0.080"	Fiberglass	Nylon Coated	-20 to 212	168MXL012	7887K3	0000
				1/8"	17"	212	0.080"	Fiberglass	Nylon Coated	-20 to 212	170MXL012	7887K218	0000
				1/8"	18"	225	0.080"	Fiberglass	Nylon Coated	-20 to 212	180MXL012	7887K31	0000
				1/8"	20"	250	0.080"	Fiberglass	Nylon Coated	-20 to 212	200MXL012	7887K32	0000
				1/8"	20.8"	260	0.080"	Fiberglass	Nylon Coated	-20 to 212	208MXL012	7887K33	0000


				1/8"	23.6"	295	0.080"	Fiberglass	Nylon Coated	-20 to 212	236MXL012	7887K34	0000
				1/8"	24"	300	0.080"	Fiberglass	Nylon Coated	-20 to 212	240MXL012	7887K35	0000
				1/8"	32"	400	0.080"	Fiberglass	Nylon Coated	-20 to 212	320MXL012	7887K36	0000
				1/8"	39.8"	498	0.080"	Fiberglass	Nylon Coated	-20 to 212	398MXL012	7887K219	0000
				1/4"	3.2"	40	0.080"	Fiberglass	Nylon Coated	-20 to 212	32MXL025	7887K221	0000
				1/4"	3.6"	45	0.080"	Fiberglass	Nylon Coated	-20 to 212	36MXL025	7887K7	0000
				1/4"	4"	50	0.080"	Fiberglass	Nylon Coated	-20 to 212	40MXL025	7887K71	0000
				1/4"	4.4"	55	0.080"	Fiberglass	Nylon Coated	-20 to 212	44MXL025	7887K72	0000
				1/4"	4.8"	60	0.080"	Fiberglass	Nylon Coated	-20 to 212	48MXL025	7887K73	0000
				1/4"	5.6"	70	0.080"	Fiberglass	Nylon Coated	-20 to 212	56MXL025	7887K74	0000


				1/4"	6.4"	80	0.080"	Fiberglass	Nylon Coated	-20 to 212	64MXL025	7887K75	0000
				1/4"	6.8"	85	0.080"	Fiberglass	Nylon Coated	-20 to 212	68MXL025	7887K76	0000
				1/4"	7.2"	90	0.080"	Fiberglass	Nylon Coated	-20 to 212	72MXL025	7887K77	0000
				1/4"	7.6"	95	0.080"	Fiberglass	Nylon Coated	-20 to 212	76MXL025	7887K78	0000
1/4"				8"	100	0.080"	Fiberglass	Nylon Coated	-20 to 212	80MXL025	7887K79	0000
1/4"	8.4"			105	0.080"	Fiberglass	Nylon Coated	-20 to 212	84MXL025	7887K222	0000
1/4"	8.8"			110	0.080"	Fiberglass	Nylon Coated	-20 to 212	88MXL025	7887K8	0000
1/4"	9.1"			114	0.080"	Fiberglass	Nylon Coated	-20 to 212	91MXL025	7887K223	0000
1/4"	9.6"			120	0.080"	Fiberglass	Nylon Coated	-20 to 212	96MXL025	7887K81	0000
1/4"	10.4"	130		0.080"	Fiberglass	Nylon Coated	-20 to 212	104MXL025	7887K82	0000
1/4"	11.2"	140	0.080"	Fiberglass	Nylon Coated	-20 to 212	112MXL025	7887K83	0000
1/4"	11.5"	144	0.080"	Fiberglass	Nylon Coated	-20 to 212	115MXL025	7887K224	0000
1/4"	12"	150	0.080"	Fiberglass	Nylon Coated	-20 to 212	120MXL025	7887K84	0000
1/4"	12.2"	153	0.080"	Fiberglass	Nylon Coated	-20 to 212	122MXL025	7887K225	0000
1/4"	12.4"	155	0.080"	Fiberglass	Nylon Coated	-20 to 212	124MXL025	7887K226	0000
1/4"	13.2"	165	0.080"	Fiberglass	Nylon Coated	-20 to 212	132MXL025	7887K85	0000
1/4"	14"	175	0.080"	Fiberglass	Nylon Coated	-20 to 212	140MXL025	7887K86	0000
1/4"	14.7"	184	0.080"	Fiberglass	Nylon Coated	-20 to 212	147MXL025	7887K227	0000
1/4"	15.2"	190	0.080"	Fiberglass	Nylon Coated	-20 to 212	152MXL025	7887K87	0000
1/4"	16"	200	0.080"	Fiberglass	Nylon Coated	-20 to 212	160MXL025	7887K88	0000
1/4"	16.8"	210	0.080"	Fiberglass	Nylon Coated	-20 to 212	168MXL025	7887K89	0000
1/4"	17"	212	0.080"	Fiberglass	Nylon Coated	-20 to 212	170MXL025	7887K228	0000
1/4"	18"	225	0.080"	Fiberglass	Nylon Coated	-20 to 212	180MXL025	7887K9	0000
1/4"	20"	250	0.080"	Fiberglass	Nylon Coated	-20 to 212	200MXL025	7887K91	00000
1/4"	20.8"	260	0.080"	Fiberglass	Nylon Coated	-20 to 212	208MXL025	7887K92	00000
1/4"	23.6"	295	0.080"	Fiberglass	Nylon Coated	-20 to 212	236MXL025	7887K93	00000
1/4"	24"	300	0.080"	Fiberglass	Nylon Coated	-20 to 212	240MXL025	7887K94	00000
1/4"	32"	400	0.080"	Fiberglass	Nylon Coated	-20 to 212	320MXL025	7887K95	00000
1/4"	39.8"	498	0.080"	Fiberglass	Nylon Coated	-20 to 212	398MXL025	7887K229	00000
3 mm	81 mm	40	0.080"	Fiberglass	Nylon Coated	-30 to 180	B40MXL3	5027N11	0000
3 mm	91 mm	45	0.080"	Fiberglass	Nylon Coated	-30 to 180	B45MXL3	5027N12	0000
3 mm	101 mm	50	0.080"	Fiberglass	Nylon Coated	-30 to 180	B50MXL3	5027N13	0000
3 mm	111 mm	55	0.080"	Fiberglass	Nylon Coated	-30 to 180	B55MXL3	5027N14	0000
3 mm	121 mm	60	0.080"	Fiberglass	Nylon Coated	-30 to 180	B60MXL3	5027N15	0000
3 mm	132 mm	65	0.080"	Fiberglass	Nylon Coated	-30 to 180	B65MXL3	5027N16	0000
3 mm	142 mm	70	0.080"	Fiberglass	Nylon Coated	-30 to 180	B70MXL3	5027N17	0000
3 mm	152 mm	75	0.080"	Fiberglass	Nylon Coated	-30 to 180	B75MXL3	5027N18	0000
3 mm	162 mm	80	0.080"	Fiberglass	Nylon Coated	-30 to 180	B80MXL3	5027N19	0000
3 mm	182 mm	90	0.080"	Fiberglass	Nylon Coated	-30 to 180	B90MXL3	5027N21	0000
3 mm	203 mm	100	0.080"	Fiberglass	Nylon Coated	-30 to 180	B100MXL3	5027N22	0000
3 mm	223 mm	110	0.080"	Fiberglass	Nylon Coated	-30 to 180	B110MXL3	5027N23	0000
3 mm	243 mm	120	0.080"	Fiberglass	Nylon Coated	-30 to 180	B120MXL3	5027N24	0000
3 mm	264 mm	130	0.080"	Fiberglass	Nylon Coated	-30 to 180	B130MXL3	5027N25	0000
3 mm	284 mm	140	0.080"	Fiberglass	Nylon Coated	-30 to 180	B140MXL3	5027N26	0000
3 mm	304 mm	150	0.080"	Fiberglass	Nylon Coated	-30 to 180	B150MXL3	5027N27	0000
3 mm	325 mm	160	0.080"	Fiberglass	Nylon Coated	-30 to 180	B160MXL3	5027N28	0000
3 mm	355 mm	175	0.080"	Fiberglass	Nylon Coated	-30 to 180	B175MXL3	5027N29	0000
3 mm	406 mm	200	0.080"	Fiberglass	Nylon Coated	-30 to 180	B200MXL3	5027N31	0000
3 mm	508 mm	250	0.080"	Fiberglass	Nylon Coated	-30 to 180	B250MXL3	5027N34	0000
3 mm	568 mm	280	0.080"	Fiberglass	Nylon Coated	-30 to 180	B280MXL3	5027N35	0000
3 mm	609 mm	300	0.080"	Fiberglass	Nylon Coated	-30 to 180	B300MXL3	5027N36	0000
3 mm	711 mm	350	0.080"	Fiberglass	Nylon Coated	-30 to 180	B350MXL3	5027N37	0000
3 mm	812 mm	400	0.080"	Fiberglass	Nylon Coated	-30 to 180	B400MXL3	5027N38	0000
6 mm	81 mm	40	0.080"	Fiberglass	Nylon Coated	-30 to 180	B40MXL6	5027N39	0000
6 mm	91 mm	45	0.080"	Fiberglass	Nylon Coated	-30 to 180	B45MXL6	5027N41	0000
6 mm	101 mm	50	0.080"	Fiberglass	Nylon Coated	-30 to 180	B50MXL6	5027N42	0000
6 mm	111 mm	55	0.080"	Fiberglass	Nylon Coated	-30 to 180	B55MXL6	5027N43	0000
6 mm	121 mm	60	0.080"	Fiberglass	Nylon Coated	-30 to 180	B60MXL6	5027N44	0000
6 mm	132 mm	65	0.080"	Fiberglass	Nylon Coated	-30 to 180	B65MXL6	5027N45	0000
6 mm	142 mm	70	0.080"	Fiberglass	Nylon Coated	-30 to 180	B70MXL6	5027N46	0000
6 mm	152 mm	75	0.080"	Fiberglass	Nylon Coated	-30 to 180	B75MXL6	5027N47	0000
6 mm	162 mm	80	0.080"	Fiberglass	Nylon Coated	-30 to 180	B80MXL6	5027N48	0000
6 mm	182 mm	90	0.080"	Fiberglass	Nylon Coated	-30 to 180	B90MXL6	5027N49	0000
6 mm	203 mm	100	0.080"	Fiberglass	Nylon Coated	-30 to 180	B100MXL6	5027N51	0000
6 mm	223 mm	110	0.080"	Fiberglass	Nylon Coated	-30 to 180	B110MXL6	5027N52	0000
6 mm	243 mm	120	0.080"	Fiberglass	Nylon Coated	-30 to 180	B120MXL6	5027N53	0000
6 mm	264 mm	130	0.080"	Fiberglass	Nylon Coated	-30 to 180	B130MXL6	5027N54	0000
6 mm	284 mm	140	0.080"	Fiberglass	Nylon Coated	-30 to 180	B140MXL6	5027N55	0000
6 mm	304 mm	150	0.080"	Fiberglass	Nylon Coated	-30 to 180	B150MXL6	5027N56	0000
6 mm	325 mm	160	0.080"	Fiberglass	Nylon Coated	-30 to 180	B160MXL6	5027N57	0000
6 mm	355 mm	175	0.080"	Fiberglass	Nylon Coated	-30 to 180	B175MXL6	5027N58	0000
6 mm	406 mm	200	0.080"	Fiberglass	Nylon Coated	-30 to 180	B200MXL6	5027N59	0000
6 mm	457 mm	225	0.080"	Fiberglass	Nylon Coated	-30 to 180	B225MXL6	5027N61	0000
6 mm	467 mm	230	0.080"	Fiberglass	Nylon Coated	-30 to 180	B230MXL6	5027N62	0000
6 mm	508 mm	250	0.080"	Fiberglass	Nylon Coated	-30 to 180	B250MXL6	5027N63	0000
6 mm	568 mm	280	0.080"	Fiberglass	Nylon Coated	-30 to 180	B280MXL6	5027N64	0000
6 mm	609 mm	300	0.080"	Fiberglass	Nylon Coated	-30 to 180	B300MXL6	5027N65	0000
6 mm	711 mm	350	0.080"	Fiberglass	Nylon Coated	-30 to 180	B350MXL6	5027N66	00000
6 mm	812 mm	400	0.080"	Fiberglass	Nylon Coated	-30 to 180	B400MXL6	5027N67	00000



		L Trade Size

		1/2"	54"	144	0.375"	Fiberglass	Nylon Coated	-22 to 212	540L050	6484K162	00000


		3/4"	54"	144	0.375"	Fiberglass	Nylon Coated	-22 to 212	540L075	6484K262	00000
		1"	54"	144	0.375"	Fiberglass	Nylon Coated	-22 to 212	540L100	6484K362	00000




				XH Trade Size

				2"	126"	144	0.875"	Fiberglass	Nylon Coated	-30 to 140	1260XH200	5845N19	000000


				3"	126"	144	0.875"	Fiberglass	Nylon Coated	-30 to 140	1260XH300	5845N34	000000




						XXH Trade Size

						2"	180"	144	1.25"	Fiberglass	Nylon Coated	-30 to 140	1800XXH200	5458N18	000000


						3"	180"	144	1.25"	Fiberglass	Nylon Coated	-30 to 140	1800XXH300	5458N27	000000
						4"	180"	144	1.25"	Fiberglass	Nylon Coated	-30 to 140	1800XXH400	5458N36	00000000


						Abrasion-Resistant Urethane Rubber







										MXL Trade Size

										1/8"	2.8"	35	0.080"	Aramid	—	-30 to 180	28MXL012	1679K161	0000


										1/8"	3.2"	40	0.080"	Aramid	—	-30 to 180	32MXL012	1679K164	0000
										1/8"	3.6"	45	0.080"	Aramid	—	-30 to 180	36MXL012	1679K167	0000
										1/8"	4"	50	0.080"	Aramid	—	-30 to 180	40MXL012	1679K61	0000
										1/8"	4.8"	60	0.080"	Aramid	—	-30 to 180	48MXL012	1679K64	0000
										1/8"	5.2"	65	0.080"	Aramid	—	-30 to 180	52MXL012	1679K67	0000
										1/8"	5.6"	70	0.080"	Aramid	—	-30 to 180	56MXL012	1679K71	0000
										1/8"	6"	75	0.080"	Aramid	—	-30 to 180	60MXL012	1679K74	0000
										1/8"	6.4"	80	0.080"	Aramid	—	-30 to 180	64MXL012	1679K77	0000
										1/8"	6.8"	85	0.080"	Aramid	—	-30 to 180	68MXL012	1679K81	0000
										1/8"	7.2"	90	0.080"	Aramid	—	-30 to 180	70MXL012	1679K84	0000


										1/8"	7.6"	95	0.080"	Aramid	—	-30 to 180	76MXL012	1679K171	0000
										1/8"	8"	100	0.080"	Aramid	—	-30 to 180	80MXL012	1679K87	0000
										1/8"	8.2"	103	0.080"	Aramid	—	-30 to 180	82MXL012	1679K91	0000
										1/8"	8.8"	110	0.080"	Aramid	—	-30 to 180	88MXL012	1679K94	0000
										1/8"	9"	112	0.080"	Aramid	—	-30 to 180	90MXL012	1679K97	0000
										1/8"	9.1"	114	0.080"	Aramid	—	-30 to 180	91MXL012	1679K611	0000
										1/8"	9.6"	120	0.080"	Aramid	—	-30 to 180	96MXL012	1679K614	0000
1/8"										10"	125	0.080"	Aramid	—	-30 to 180	100MXL012	1679K617	0000
1/8"	10.4"									130	0.080"	Aramid	—	-30 to 180	104MXL012	1679K621	0000
1/8"	10.8"									135	0.080"	Aramid	—	-30 to 180	108MXL012	1679K624	0000


1/8"	11.2"									140	0.080"	Aramid	—	-30 to 180	112MXL012	1679K627	0000
1/8"	11.5"									144	0.080"	Aramid	—	-30 to 180	115MXL012	1679K631	0000
1/8"	12"									150	0.080"	Aramid	—	-30 to 180	120MXL012	1679K634	0000
1/8"	12.4"									155	0.080"	Aramid	—	-30 to 180	124MXL012	1679K637	0000
1/8"	12.8"									160	0.080"	Aramid	—	-30 to 180	128MXL012	1679K641	0000
1/8"	13.2"									165	0.080"	Aramid	—	-30 to 180	132MXL012	1679K644	0000
1/8"	13.6"	170								0.080"	Aramid	—	-30 to 180	136MXL012	1679K647	0000
1/8"	14.4"	180	0.080"							Aramid	—	-30 to 180	144MXL012	1679K651	0000
1/8"	15.2"	190	0.080"							Aramid	—	-30 to 180	152MXL012	1679K654	0000
1/8"	17.2"	215	0.080"							Aramid	—	-30 to 180	172MXL012	1679K657	0000


1/8"	17.6"	220	0.080"							Aramid	—	-30 to 180	176MXL012	1679K661	0000
1/8"	18"	225	0.080"							Aramid	—	-30 to 180	180MXL012	1679K664	0000
1/8"	18.8"	235	0.080"							Aramid	—	-30 to 180	188MXL012	1679K174	0000
1/8"	19.2"	240	0.080"							Aramid	—	-30 to 180	192MXL012	1679K667	0000
1/8"	21.2"	265	0.080"	Aramid						—	-30 to 180	212MXL012	1679K177	0000
1/8"	22.4"	280	0.080"	Aramid	—					-30 to 180	224MXL012	1679K671	0000
1/8"	25.6"	320	0.080"	Aramid	—					-30 to 180	256MXL012	1679K674	0000
1/8"	30.4"	380	0.080"	Aramid	—					-30 to 180	304MXL012	1679K677	0000
1/8"	38.5"	482	0.080"	Aramid	—					-30 to 180	385MXL012	1679K681	0000
1/8"	77"	962	0.080"	Aramid	—					-30 to 180	770MXL012	1679K684	00000


1/4"	2.8"	35	0.080"	Aramid	—					-30 to 180	28MXL025	1679K163	0000
1/4"	3.2"	40	0.080"	Aramid	—					-30 to 180	32MXL025	1679K166	0000
1/4"	3.6"	45	0.080"	Aramid	—					-30 to 180	36MXL025	1679K169	0000
1/4"	4"	50	0.080"	Aramid	—					-30 to 180	40MXL025	1679K63	0000
1/4"	4.8"	60	0.080"	Aramid	—	-30 to 180				48MXL025	1679K66	0000
1/4"	5.2"	65	0.080"	Aramid	—	-30 to 180	52MXL025			1679K69	0000
1/4"	5.6"	70	0.080"	Aramid	—	-30 to 180	56MXL025			1679K73	0000
1/4"	6"	75	0.080"	Aramid	—	-30 to 180	60MXL025			1679K76	0000
1/4"	6.8"	85	0.080"	Aramid	—	-30 to 180	68MXL025			1679K83	0000
1/4"	7.2"	90	0.080"	Aramid	—	-30 to 180	72MXL025	1679K86		0000
1/4"	7.6"	95	0.080"	Aramid	—	-30 to 180	76MXL025	1679K173	0000
1/4"	8"	100	0.080"	Aramid	—	-30 to 180	80MXL025	1679K89	0000
1/4"	8.2"	103	0.080"	Aramid	—	-30 to 180	82MXL025	1679K93	0000
1/4"	8.8"	110	0.080"	Aramid	—	-30 to 180	88MXL025	1679K96	0000
1/4"	9"	112	0.080"	Aramid	—	-30 to 180	90MXL025	1679K99	0000
1/4"	9.1"	114	0.080"	Aramid	—	-30 to 180	91MXL025	1679K613	0000
1/4"	9.6"	120	0.080"	Aramid	—	-30 to 180	96MXL025	1679K616	0000
1/4"	10"	125	0.080"	Aramid	—	-30 to 180	100MXL025	1679K619	0000
1/4"	10.4"	130	0.080"	Aramid	—	-30 to 180	104MXL025	1679K623	0000
1/4"	10.8"	135	0.080"	Aramid	—	-30 to 180	108MXL025	1679K626	0000
1/4"	11.2"	140	0.080"	Aramid	—	-30 to 180	112MXL025	1679K629	0000
1/4"	11.5"	144	0.080"	Aramid	—	-30 to 180	115MXL025	1679K633	0000
1/4"	12"	150	0.080"	Aramid	—	-30 to 180	120MXL025	1679K636	0000
1/4"	12.4"	155	0.080"	Aramid	—	-30 to 180	124MXL025	1679K639	0000
1/4"	12.8"	160	0.080"	Aramid	—	-30 to 180	128MXL025	1679K643	0000
1/4"	13.2"	165	0.080"	Aramid	—	-30 to 180	132MXL025	1679K646	0000
1/4"	13.6"	170	0.080"	Aramid	—	-30 to 180	136MXL025	1679K649	0000
1/4"	14.4"	180	0.080"	Aramid	—	-30 to 180	144MXL025	1679K653	0000
1/4"	15.2"	190	0.080"	Aramid	—	-30 to 180	152MXL025	1679K656	0000
1/4"	17.2"	215	0.080"	Aramid	—	-30 to 180	172MXL025	1679K659	0000
1/4"	17.6"	220	0.080"	Aramid	—	-30 to 180	176MXL025	1679K663	0000
1/4"	18"	225	0.080"	Aramid	—	-30 to 180	180MXL025	1679K666	0000
1/4"	18.8"	235	0.080"	Aramid	—	-30 to 180	188MXL025	1679K176	0000
1/4"	19.2"	240	0.080"	Aramid	—	-30 to 180	192MXL025	1679K669	0000
1/4"	21.2"	265	0.080"	Aramid	—	-30 to 180	212MXL025	1679K179	0000
1/4"	22.4"	280	0.080"	Aramid	—	-30 to 180	224MXL025	1679K673	0000
1/4"	25.6"	320	0.080"	Aramid	—	-30 to 180	256MXL025	1679K676	0000
1/4"	30.4"	380	0.080"	Aramid	—	-30 to 180	304MXL025	1679K679	0000
1/4"	38.5"	482	0.080"	Aramid	—	-30 to 180	385MXL025	1679K683	0000
1/4"	77"	962	0.080"	Aramid	—	-30 to 180	770MXL025	1679K686	00000



		XL Trade Size

		1/4"	28.8"	144	0.200"	Steel	—	-13 to 176	288XL025	1679K219	00000


		3/8"	28.8"	144	0.200"	Steel	—	-13 to 176	288XL037	1679K221	00000




				L Trade Size

				1/2"	54"	144	0.375"	Steel	—	-13 to 176	540L050	1679K334	00000


				3/4"	54"	144	0.375"	Steel	—	-13 to 176	540L075	1679K335	00000
				1"	54"	144	0.375"	Steel	—	-13 to 176	540L100	1679K336	00000

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	1375K11	000000


				1/8"	0.080"	11	Finished	1/8"	0.28"	1	Standard	1375K12	00000
				1/8"	0.080"	12	Finished	1/8"	0.306"	1	Standard	1375K13	00000
				1/8"	0.080"	14	Finished	1/8"	0.357"	1	Standard	1375K14	00000
				1/8"	0.080"	15	Finished	3/16"	0.382"	1	Standard	1375K15	00000
				1/8"	0.080"	16	Finished	3/16"	0.407"	1	Standard	1375K16	00000
				1/8"	0.080"	18	Finished	3/16"	0.458"	2	Standard	1375K17	00000
				1/8"	0.080"	20	Finished	1/4"	0.509"	1	Standard	1375K21	00000
				1/8"	0.080"	21	Finished	1/4"	0.535"	1	Standard	1375K23	00000
				1/8"	0.080"	22	Finished	1/4"	0.56"	1	Standard	1375K25	00000
				1/8"	0.080"	24	Finished	1/4"	0.611"	2	Standard	1375K26	00000


				1/8"	0.080"	28	Finished	1/4"	0.713"	2	Standard	1375K27	00000
				1/8"	0.080"	30	Finished	1/4"	0.764"	2	Standard	1375K28	00000
				1/8"	0.080"	36	Finished	1/4"	0.917"	2	Standard	1375K49	00000
				1/8"	0.080"	40	Finished	1/4"	1.019"	2	Standard	1375K51	00000
				1/8"	0.080"	42	Finished	1/4"	1.07"	2	Standard	1375K52	00000
				1/8"	0.080"	60	Finished	1/4"	1.53"	2	Standard	1375K53	00000
				1/4"	0.080"	10	Finished	1/8"	0.255"	1	Standard	1375K29	00000
				1/4"	0.080"	11	Finished	1/8"	0.28"	1	Standard	1375K31	00000
				1/4"	0.080"	12	Finished	1/8"	0.306"	1	Standard	1375K32	00000
				1/4"	0.080"	14	Finished	1/8"	0.357"	1	Standard	1375K33	00000


				1/4"	0.080"	15	Finished	3/16"	0.382"	1	Standard	1375K34	00000
				1/4"	0.080"	16	Finished	3/16"	0.407"	1	Standard	1375K35	00000
				1/4"	0.080"	18	Finished	3/16"	0.458"	2	Standard	1375K36	00000
				1/4"	0.080"	20	Finished	1/4"	0.509"	1	Standard	1375K39	00000
				1/4"	0.080"	21	Finished	1/4"	0.535"	1	Standard	1375K42	00000
				1/4"	0.080"	22	Finished	1/4"	0.56"	1	Standard	1375K44	00000
				1/4"	0.080"	24	Finished	1/4"	0.611"	2	Standard	1375K45	00000
				1/4"	0.080"	28	Finished	1/4"	0.713"	2	Standard	1375K47	00000
				1/4"	0.080"	30	Finished	1/4"	0.764"	2	Standard	1375K48	00000
				1/4"	0.080"	36	Finished	1/4"	0.917"	2	Standard	1375K54	00000


				1/4"	0.080"	40	Finished	1/4"	1.019"	2	Standard	1375K55	00000
				1/4"	0.080"	42	Finished	1/4"	1.07"	2	Standard	1375K56	00000
				1/4"	0.080"	60	Finished	1/4"	1.53"	2	Standard	1375K57	00000
				3 mm	0.080"	10	Finished	3 mm	6.5 mm	1	Standard	1375K171	00000
				3 mm	0.080"	11	Finished	3 mm	7.1 mm	1	Standard	1375K172	00000
				3 mm	0.080"	12	Finished	3 mm	7.8 mm	1	Standard	1375K173	00000
				3 mm	0.080"	14	Finished	3 mm	9.1 mm	1	Standard	1375K174	00000
				3 mm	0.080"	15	Finished	4 mm	9.7 mm	1	Standard	1375K175	00000
				3 mm	0.080"	16	Finished	4 mm	10.3 mm	1	Standard	1375K176	00000
				3 mm	0.080"	18	Finished	4 mm	11.6 mm	2	Standard	1375K177	00000


				3 mm	0.080"	18	Finished	6 mm	11.6 mm	1	Standard	1375K178	00000
				3 mm	0.080"	20	Finished	4 mm	12.9 mm	2	Standard	1375K179	00000
				3 mm	0.080"	20	Finished	6 mm	12.9 mm	1	Standard	1375K181	00000
				3 mm	0.080"	22	Finished	4 mm	14.2 mm	2	Standard	1375K184	00000
3 mm				0.080"	22	Finished	6 mm	14.2 mm	1	Standard	1375K185	00000
3 mm	0.080"			24	Finished	6 mm	15.5 mm	2	Standard	1375K186	00000
3 mm	0.080"			25	Finished	6 mm	16.2 mm	2	Standard	1375K187	00000
3 mm	0.080"			28	Finished	6 mm	18.1 mm	2	Standard	1375K188	00000
3 mm	0.080"			30	Finished	6 mm	19.4 mm	2	Standard	1375K189	00000
3 mm	0.080"	32		Finished	6 mm	20.7 mm	2	Standard	1375K191	00000
3 mm	0.080"	36	Finished	6 mm	23.3 mm	2	Standard	1375K192	00000
3 mm	0.080"	40	Finished	6 mm	25.9 mm	2	Standard	1375K193	00000
3 mm	0.080"	42	Finished	6 mm	27.2 mm	2	Standard	1375K194	00000
3 mm	0.080"	44	Finished	6 mm	28.5 mm	2	Standard	1375K195	00000
3 mm	0.080"	60	Finished	6 mm	38.8 mm	2	Standard	1375K197	00000
6 mm	0.080"	10	Finished	3 mm	6.5 mm	1	Standard	1375K101	00000
6 mm	0.080"	12	Finished	3 mm	7.8 mm	1	Standard	1375K105	00000
6 mm	0.080"	14	Finished	3 mm	9.1 mm	1	Standard	1375K107	00000
6 mm	0.080"	15	Finished	4 mm	9.7 mm	1	Standard	1375K109	00000
6 mm	0.080"	16	Finished	4 mm	10.3 mm	1	Standard	1375K112	00000
6 mm	0.080"	18	Finished	4 mm	11.6 mm	2	Standard	1375K114	00000
6 mm	0.080"	18	Finished	6 mm	11.6 mm	1	Standard	1375K115	00000
6 mm	0.080"	20	Finished	4 mm	12.9 mm	2	Standard	1375K118	00000
6 mm	0.080"	20	Finished	6 mm	12.9 mm	1	Standard	1375K119	00000
6 mm	0.080"	22	Finished	4 mm	14.2 mm	2	Standard	1375K127	00000
6 mm	0.080"	22	Finished	6 mm	14.2 mm	1	Standard	1375K128	00000
6 mm	0.080"	24	Finished	6 mm	15.5 mm	2	Standard	1375K132	00000
6 mm	0.080"	28	Finished	6 mm	18.1 mm	2	Standard	1375K136	00000
6 mm	0.080"	30	Finished	6 mm	19.4 mm	2	Standard	1375K138	00000
6 mm	0.080"	32	Finished	6 mm	20.7 mm	2	Standard	1375K141	00000
6 mm	0.080"	36	Finished	6 mm	23.3 mm	2	Standard	1375K143	00000
6 mm	0.080"	40	Finished	6 mm	25.9 mm	2	Standard	1375K145	00000
6 mm	0.080"	42	Finished	6 mm	27.2 mm	2	Standard	1375K147	00000
6 mm	0.080"	48	Finished	6 mm	31 mm	2	Standard	1375K153	00000
6 mm	0.080"	60	Finished	6 mm	38.8 mm	—	Standard	1375K157	00000
6 mm	0.080"	60	Finished	6 mm	38.8 mm	2	Standard	1375K155	00000
6 mm	0.080"	80	Finished	8 mm	51.7 mm	—	Standard	1375K162	00000
6 mm	0.080"	90	Finished	8 mm	58.2 mm	—	Standard	1375K164	00000
6 mm	0.080"	100	Finished	8 mm	64.7 mm	—	Standard	1375K166	00000
6 mm	0.080"	120	Finished	10 mm	77.6 mm	—	Standard	1375K168	00000
9 mm	0.080"	10	Finished	3 mm	6.5 mm	1	Standard	1375K102	00000
9 mm	0.080"	14	Finished	3 mm	9.1 mm	1	Standard	1375K108	00000
9 mm	0.080"	15	Finished	4 mm	9.7 mm	1	Standard	1375K111	00000
9 mm	0.080"	16	Finished	4 mm	10.3 mm	1	Standard	1375K113	00000
9 mm	0.080"	18	Finished	6 mm	11.6 mm	1	Standard	1375K117	00000
9 mm	0.080"	20	Finished	6 mm	12.9 mm	1	Standard	1375K122	00000
9 mm	0.080"	21	Finished	6 mm	13.6 mm	1	Standard	1375K126	00000
9 mm	0.080"	22	Finished	6 mm	14.2 mm	1	Standard	1375K131	00000
9 mm	0.080"	30	Finished	6 mm	19.4 mm	2	Standard	1375K139	00000
9 mm	0.080"	32	Finished	6 mm	20.7 mm	2	Standard	1375K142	00000
9 mm	0.080"	48	Finished	6 mm	31 mm	2	Standard	1375K154	00000
9 mm	0.080"	60	Finished	6 mm	38.8 mm	—	Standard	1375K158	00000
9 mm	0.080"	60	Finished	6 mm	38.8 mm	2	Standard	1375K156	00000
9 mm	0.080"	72	Finished	6 mm	46.6 mm	—	Standard	1375K161	00000
9 mm	0.080"	80	Finished	8 mm	51.7 mm	—	Standard	1375K163	00000
9 mm	0.080"	90	Finished	8 mm	58.2 mm	—	Standard	1375K165	00000
9 mm	0.080"	100	Finished	8 mm	64.7 mm	—	Standard	1375K167	00000
9 mm	0.080"	120	Finished	10 mm	77.6 mm	—	Standard	1375K169	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.

	Tooth Finish	Temp. Range, ° F	Max. Continuous Lg., ft.		Per Ft.
Neoprene







	MXL Trade Size

	1/4"	0.080"	Fiberglass	Nylon Coated	-22 to 212	50	7959K21	00000


	3/8"	0.080"	Fiberglass	Nylon Coated	-22 to 212	50	7959K22	0000
	1/2"	0.080"	Fiberglass	Nylon Coated	-22 to 212	50	7959K23	0000

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"	2	Standard	1254N11	00000


	1/4"	0.080"	12	Plain	3/32"	0.306"	2	Standard	1254N13	0000
	1/4"	0.080"	14	Plain	1/8"	0.357"	2	Standard	1254N14	0000
	1/4"	0.080"	15	Plain	1/8"	0.382"	2	Standard	1254N15	0000
	1/4"	0.080"	16	Plain	1/8"	0.407"	2	Standard	1254N16	0000
	1/4"	0.080"	18	Plain	3/16"	0.458"	2	Standard	1254N17	0000
	1/4"	0.080"	20	Plain	3/16"	0.509"	2	Standard	1254N18	0000
	1/4"	0.080"	21	Plain	3/16"	0.535"	2	Standard	1254N19	0000
	1/4"	0.080"	22	Plain	3/16"	0.56"	2	Standard	1254N2	0000
	1/4"	0.080"	24	Plain	3/16"	0.611"	2	Standard	1254N21	0000
	1/4"	0.080"	28	Plain	1/4"	0.713"	2	Standard	1254N22	0000


	1/4"	0.080"	30	Plain	1/4"	0.764"	2	Standard	1254N23	0000
	1/4"	0.080"	36	Plain	1/4"	0.917"	2	Standard	1254N24	0000
	1/4"	0.080"	40	Plain	1/4"	1.019"	2	Standard	1254N25	0000
	1/4"	0.080"	42	Plain	1/4"	1.07"	2	Standard	1254N26	0000
	1/4"	0.080"	60	Plain	1/4"	1.53"	2	Standard	1254N27	0000
	6 mm	0.080"	10	Plain	3 mm	6.5 mm	1	Standard	7717N12	0000
	6 mm	0.080"	10	Plain	3 mm	6.5 mm	2	Standard	7717N11	00000
	6 mm	0.080"	14	Plain	4 mm	9.1 mm	1	Standard	7717N18	0000
	6 mm	0.080"	14	Plain	4 mm	9.1 mm	2	Standard	7717N17	00000
	6 mm	0.080"	15	Plain	4 mm	9.7 mm	2	Standard	7717N19	00000


	6 mm	0.080"	16	Plain	4 mm	10.3 mm	2	Standard	7717N22	00000
	6 mm	0.080"	18	Plain	6 mm	11.6 mm	1	Standard	7717N27	0000
	6 mm	0.080"	18	Plain	6 mm	11.6 mm	2	Standard	7717N25	00000
	6 mm	0.080"	18	Plain	8 mm	11.6 mm	1	Standard	7717N26	0000
	6 mm	0.080"	18	Plain	8 mm	11.6 mm	2	Standard	7717N24	00000
	6 mm	0.080"	20	Plain	8 mm	12.9 mm	1	Standard	7717N29	00000
	6 mm	0.080"	20	Plain	8 mm	12.9 mm	2	Standard	7717N28	00000
	6 mm	0.080"	26	Plain	8 mm	16.8 mm	2	Standard	7717N47	00000
	6 mm	0.080"	30	Plain	8 mm	19.4 mm	1	Standard	7717N58	00000
	6 mm	0.080"	30	Plain	8 mm	19.4 mm	2	Standard	7717N56	00000


	6 mm	0.080"	32	Plain	8 mm	20.7 mm	1	Standard	7717N62	00000
	6 mm	0.080"	36	Plain	8 mm	23.3 mm	2	Flush	7717N64	00000
	6 mm	0.080"	36	Plain	8 mm	23.3 mm	2	Standard	7717N65	00000
	6 mm	0.080"	40	Plain	8 mm	25.9 mm	2	Flush	7717N68	00000
	6 mm	0.080"	40	Plain	8 mm	25.9 mm	2	Standard	7717N69	00000
	6 mm	0.080"	60	Plain	8 mm	38.8 mm	2	Standard	7717N83	00000
	6 mm	0.080"	65	Plain	8 mm	42 mm	2	Standard	7717N85	00000
	6 mm	0.080"	90	Plain	8 mm	58.2 mm	2	Standard	7717N89	00000
	6 mm	0.080"	100	Plain	8 mm	64.7 mm	1	Standard	7717N93	00000
	6 mm	0.080"	120	Plain	8 mm	77.6 mm	2	Standard	7717N96	00000


	6 mm	0.080"	130	Plain	8 mm	84.1 mm	1	Standard	7717N99	00000
	6 mm	0.080"	130	Plain	8 mm	84.1 mm	2	Standard	7717N98	00000

Timing Belts with Teeth on Both Sides

Drive three or more pulleys in reversing and serpentine drive systems with one belt. With trapezoidal teeth on both sides, these belts transmit power from either side. They also rotate pulleys in opposite directions without slipping.

	Pitch	Reinforcement Material	Tooth Finish	Temp. Range, ° F	Belt Trade No.		Each
Neoprene







	L Trade Size

	1/2"	54"	144	0.375"	Fiberglass	Nylon Coated	-22 to 212	540DL050	7891K7	0000000


	3/4"	54"	144	0.375"	Fiberglass	Nylon Coated	-22 to 212	540DL075	7891K93	000000
	1"	54"	144	0.375"	Fiberglass	Nylon Coated	-22 to 212	540DL100	7891K122	000000