5 mm Gears | McMaster-Carr

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Number of Flanges

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REACH

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EAR99

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153 Products

Tooth Profile

Trapezoidal

Keep drive systems in sync with the original tooth profile

91 products

Curved (HTD)

Transmit about twice as much torque as trapezoidal teeth

62 products

Performance

High Torque

Snugger fit than trapezoidal teeth to transmit more torque

62 products

Easy Install

Slide on and off a bushing without removing the bushing from the shaft

39 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 T5 Trade Size







				Corrosion-Resistant Aluminum

				10	5	10	Plain	—	16.1	2	Standard	1428N2	000000


				10	5	12	Plain	—	19.3	2	Standard	1428N21	00000
				10	5	14	Plain	—	22.5	2	Standard	1428N22	00000
				10	5	15	Plain	—	24.1	2	Standard	1428N23	00000
				10	5	16	Plain	—	25.6	2	Standard	1428N24	00000
				10	5	18	Plain	—	28.8	2	Standard	1428N25	00000
				10	5	19	Plain	—	30.4	2	Standard	1428N26	00000
				10	5	20	Plain	—	32	2	Standard	1428N27	00000
				10	5	22	Plain	—	35.3	2	Standard	1428N28	00000
				10	5	24	Plain	—	38.4	2	Standard	1428N29	00000
				10	5	25	Plain	—	40	2	Standard	1428N3	00000


				10	5	26	Plain	—	41.6	2	Standard	1428N31	00000
				10	5	27	Plain	—	43.2	2	Standard	1428N32	00000
				10	5	30	Plain	—	47.8	2	Standard	1428N33	00000
				10	5	32	Plain	—	50.9	2	Standard	1428N34	00000
				10	5	36	Plain	—	57.3	2	Standard	1428N35	00000
				10	5	40	Plain	—	63.7	2	Standard	1428N36	00000
				10	5	48	Plain	—	76.4	—	Standard	1428N37	00000
				10	5	60	Plain	—	95.5	—	Standard	1428N38	00000
				16	5	10	Plain	—	16.1	2	Standard	1428N4	00000
				16	5	12	Plain	—	19.3	2	Standard	1428N41	00000


				16	5	14	Plain	—	22.5	2	Standard	1428N42	00000
				16	5	15	Plain	—	24.1	2	Standard	1428N43	00000
				16	5	16	Plain	—	25.6	2	Standard	1428N44	00000
				16	5	18	Plain	—	28.8	2	Standard	1428N45	00000
				16	5	19	Plain	—	30.4	2	Standard	1428N46	00000
				16	5	20	Plain	—	32	2	Standard	1428N47	00000
				16	5	22	Plain	—	35.3	2	Standard	1428N48	00000
				16	5	24	Plain	—	38.4	2	Standard	1428N49	00000
				16	5	25	Plain	—	40	2	Standard	1428N5	00000
				16	5	26	Plain	—	41.6	2	Standard	1428N51	00000


				16	5	27	Plain	—	43.2	2	Standard	1428N52	00000
				16	5	30	Plain	—	48	2	Standard	1428N53	00000
				16	5	32	Plain	—	51.1	2	Standard	1428N54	00000
				16	5	36	Plain	—	57.5	2	Standard	1428N55	00000
				16	5	40	Plain	—	63.9	2	Standard	1428N56	00000
				16	5	48	Plain	—	76.6	—	Standard	1428N57	00000
				16	5	60	Plain	—	95.7	—	Standard	1428N58	00000
				25	5	10	Plain	—	16.1	2	Standard	1428N6	00000
				25	5	14	Plain	—	22.5	2	Standard	1428N62	00000
				25	5	15	Plain	—	24.1	2	Standard	1428N63	00000


				25	5	16	Plain	—	25.6	2	Standard	1428N64	00000
				25	5	18	Plain	—	28.8	2	Standard	1428N65	00000
				25	5	20	Plain	—	32	2	Standard	1428N67	00000
				25	5	22	Plain	—	35.3	2	Standard	1428N68	00000
25				5	24	Plain	—	38.4	2	Standard	1428N69	00000
25	5			25	Plain	—	40	2	Standard	1428N7	00000
25	5			26	Plain	—	41.6	2	Standard	1428N71	00000
25	5			27	Plain	—	43.2	2	Standard	1428N72	00000
25	5			30	Plain	—	48	2	Standard	1428N73	00000
25	5	32		Plain	—	51.1	2	Standard	1428N74	00000
25	5	36	Plain	—	57.5	2	Standard	1428N75	00000
25	5	40	Plain	—	63.9	2	Standard	1428N76	00000
25	5	48	Plain	—	76.6	—	Standard	1428N77	00000
25	5	60	Plain	—	95.7	—	Standard	1428N78	00000

For AT5 Trade Size







				Corrosion-Resistant Aluminum

				10	5	12	Plain	—	19.3	2	Standard	3709N11	00000


				10	5	15	Plain	—	24.1	2	Standard	3709N13	00000
				10	5	20	Plain	—	32	2	Standard	3709N17	00000
				10	5	22	Plain	—	35.3	2	Standard	3709N18	00000
				10	5	24	Plain	—	38.4	2	Standard	3709N19	00000
				10	5	27	Plain	—	43.2	2	Standard	3709N23	00000
				10	5	30	Plain	8	48	2	Standard	3709N25	00000
				10	5	42	Plain	8	67	2	Standard	3709N29	00000
				10	5	60	Plain	8	95.7	—	Standard	3709N33	00000
				16	5	12	Plain	—	19.3	2	Standard	3709N34	00000
				16	5	18	Plain	—	28.8	2	Standard	3709N38	00000


				16	5	20	Plain	—	32	2	Standard	3709N41	00000
				16	5	22	Plain	—	35.3	2	Standard	3709N42	00000
				16	5	24	Plain	—	38.4	2	Standard	3709N43	00000
				16	5	25	Plain	—	40	2	Standard	3709N44	00000
				16	5	26	Plain	—	41.6	2	Standard	3709N45	00000
				16	5	27	Plain	8	43.2	2	Standard	3709N46	00000
				16	5	28	Plain	8	44.8	2	Standard	3709N47	00000
				16	5	30	Plain	8	48	2	Standard	3709N48	00000
				16	5	32	Plain	8	51.1	2	Standard	3709N49	00000
				16	5	36	Plain	8	57.5	2	Standard	3709N51	00000


				16	5	40	Plain	8	63.9	2	Standard	3709N52	00000
				16	5	42	Plain	8	67	2	Standard	3709N53	00000
				16	5	44	Plain	8	70.2	—	Standard	3709N54	00000
				16	5	60	Plain	8	95.7	—	Standard	3709N56	000000
				25	5	16	Plain	—	25.6	2	Standard	3709N61	00000
				25	5	20	Plain	—	32	2	Standard	3709N64	00000
				25	5	22	Plain	—	35.3	2	Standard	3709N65	00000
				25	5	24	Plain	—	38.4	2	Standard	3709N66	00000
				25	5	25	Plain	—	40	2	Standard	3709N67	00000
				25	5	26	Plain	—	41.6	2	Standard	3709N68	00000


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

High-Torque HTD Timing Belt Pulleys


Finished Bore	Plain Bore

Bushing Bore

Curved teeth engage with the matching belt better than standard trapezoidal teeth, so these pulleys transmit about twice the torque. All are compatible with Gates PowerGrip HTD, Omega HP, and Carlisle RPP series.

Iron—Strong but best for dry environments since moisture will cause them to rust.

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.

Corrosion-Resistant Stainless Steel—Stands up to wet environments and mild chemicals, such as the ammonia in cleaning solutions.

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.

Bushing Bore—Quickly swap or service parts in tight spaces—no press-fitting or special tools required. Mount a bushing (sold separately) on your shaft and slide the pulley over it. As you tighten the included set screws, the bushing grips the shaft and draws it into the pulley, creating a final hold that is more secure than with set screws alone.

						For Bushing
	For Max. Belt Wd., mm	Pitch, mm	No. of Teeth	Bore Type	For Shaft Dia.	Type	Trade No.	Pitch Dia., mm	No. of Flanges	Hub Type		Each
For H5M Trade Size







				Iron

				15	5	32	Plain	1/2"	—	—	50.9	2	Standard	6497K81	000000


				15	5	34	Plain	1/2"	—	—	54.1	2	Standard	6497K82	00000
				15	5	36	Plain	1/2"	—	—	57.3	2	Standard	6497K83	00000
				15	5	40	Bushing	—	Quick Disconnect (QD)	JA	63.7	2	—	6497K84	00000
				15	5	56	Bushing	—	Quick Disconnect (QD)	SH	89.1	2	—	6497K85	00000




						Corrosion-Resistant Aluminum

						9	5	16	Finished	1/4"	—	—	25.5	2	Standard	6497K268	00000


						9	5	18	Finished	1/4"	—	—	28.7	2	Standard	6497K269	00000
						9	5	20	Finished	1/4"	—	—	31.8	2	Standard	6497K271	00000
						9	5	24	Finished	1/4"	—	—	38.2	2	Standard	6497K272	00000
						9	5	28	Finished	1/4"	—	—	44.6	2	Standard	6497K273	00000
						9	5	32	Finished	1/4"	—	—	50.9	2	Standard	6497K274	00000
						9	5	36	Finished	5/16"	—	—	57.3	—	Standard	6497K275	00000
						9	5	40	Finished	5/16"	—	—	63.7	—	Standard	6497K276	00000




								Corrosion-Resistant Stainless Steel

								15	5	32	Plain	1/2"	—	—	49.8	2	Standard	1230N11	000000


								15	5	34	Plain	1/2"	—	—	53	2	Standard	1230N12	000000
								15	5	36	Plain	1/2"	—	—	56.2	2	Standard	1230N13	000000
								15	5	40	Bushing	—	Quick Disconnect (QD)	JA	62.5	2	—	1230N14	000000

Bushings

Quick-Disconnect

Bushing

Bushing
Type	Trade No.	For Shaft Dia.		Each
Quick Disconnect (QD)	JA	1/2"	6086K111	000000
Quick Disconnect (QD)	JA	9/16"	6086K118	00000
Quick Disconnect (QD)	JA	5/8"	6086K112	00000
Quick Disconnect (QD)	JA	3/4"	6086K113	00000
Quick Disconnect (QD)	JA	13/16"	6086K119	00000
Quick Disconnect (QD)	JA	7/8"	6086K114	00000
Quick Disconnect (QD)	JA	15/16"	6086K115	00000
Quick Disconnect (QD)	JA	1"	6086K116	00000
Quick Disconnect (QD)	JA	1 1/16"	6086K845	00000
Quick Disconnect (QD)	JA	1 1/8"	6086K846	00000
Quick Disconnect (QD)	JA	1 3/16"	6086K847	00000
Quick Disconnect (QD)	JA	1 1/4"	6086K117	00000
Quick Disconnect (QD)	SH	1/2"	6086K211	00000
Quick Disconnect (QD)	SH	5/8"	6086K212	00000
Quick Disconnect (QD)	SH	11/16"	6086K226	00000
Quick Disconnect (QD)	SH	3/4"	6086K213	00000
Quick Disconnect (QD)	SH	7/8"	6086K214	00000
Quick Disconnect (QD)	SH	15/16"	6086K215	00000
Quick Disconnect (QD)	SH	1"	6086K216	00000
Quick Disconnect (QD)	SH	1 1/16"	6086K217	00000
Quick Disconnect (QD)	SH	1 1/8"	6086K218	00000
Quick Disconnect (QD)	SH	1 3/16"	6086K219	00000
Quick Disconnect (QD)	SH	1 1/4"	6086K221	00000
Quick Disconnect (QD)	SH	1 5/16"	6086K848	00000
Quick Disconnect (QD)	SH	1 3/8"	6086K222	00000
Quick Disconnect (QD)	SH	1 7/16"	6086K849	00000
Quick Disconnect (QD)	SH	1 1/2"	6086K223	00000
Quick Disconnect (QD)	SH	1 5/8"	6086K224	00000
Quick Disconnect (QD)	SH	1 11/16"	6086K225	00000
Quick Disconnect (QD)	SH	22 mm	2344K71	00000
Quick Disconnect (QD)	SH	24 mm	2344K11	00000
Quick Disconnect (QD)	SH	25 mm	2344K12	00000
Quick Disconnect (QD)	SH	28 mm	2344K13	00000
Quick Disconnect (QD)	SH	30 mm	2344K14	00000
Quick Disconnect (QD)	SH	32 mm	2344K15	00000
Quick Disconnect (QD)	SH	35 mm	2344K16	00000

High-Torque HTD Timing Belt Pulleys for Hex Shafts

No need for set screws—these pulleys have bores with six walls that engage with the shaft to transfer torque. They're a good choice when your setup needs to come apart frequently since there aren't extra mounting steps such as press fitting or installing bushings. These pulleys have curved HTD teeth that interlock with the matching belt better than trapezoidal teeth, so they transmit about twice the torque. All are compatible with Gates PowerGrip HTD, Omega HP, and Carlisle RPP series.

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.

	Bore Type	Hex Wd.	Pitch Dia., mm	No. of Flanges	Hub Type		Each
For H5M Trade Size







	Corrosion-Resistant Aluminum

	9	5	18	Finished	1/2"	28.7	2	Standard	5454N11	000000


	9	5	24	Finished	1/2"	38.2	2	Standard	5454N12	00000
	9	5	30	Finished	1/2"	47.8	2	Standard	5454N13	00000
	9	5	36	Finished	1/2"	57.3	2	Standard	5454N14	00000
	15	5	15	Finished	1/2"	23.9	2	Standard	5454N15	00000
	15	5	18	Finished	1/2"	28.7	2	Standard	5454N16	00000
	15	5	24	Finished	1/2"	38.2	2	Standard	5454N17	00000
	15	5	30	Finished	1/2"	47.8	2	Standard	5454N18	00000
	15	5	36	Finished	1/2"	57.3	2	Standard	5454N19	00000