2 mm Gears | McMaster-Carr

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35 Products

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Precision High-Torque GT Timing Belt Pulleys

Finished Bore

When precise synchronization is crucial, these pulleys minimize play (backlash). They’re often found in 3D printers, where accurate positioning is essential. Their curved teeth fit snugly with matching belts. Compared to pulleys with standard trapezoidal teeth, these pulleys transmit about three times more torque and run at higher speeds. All are compatible with Gates PowerGrip GT, 2GT, GT2, GT3, and GT4 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.

Finished Bore—Mount these pulleys onto the shaft and secure with a set screw—no machining required.

	Bore Type	For Shaft Dia.	Pitch Dia., mm	No. of Flanges	Hub Type		Each
For 2MGT Trade Size







	Corrosion-Resistant Aluminum

	6	2	12	Finished	1/8"	7.6	1	Standard	3764N101	000000


	6	2	14	Finished	1/8"	8.9	1	Standard	3764N102	00000
	6	2	15	Finished	3/16"	9.6	1	Standard	3764N103	00000
	6	2	16	Finished	3/16"	10.2	1	Standard	3764N104	00000
	6	2	16	Finished	5 mm	9.7	1	Standard	3684N11	0000
	6	2	17	Finished	1/4"	10.8	1	Standard	3764N105	00000
	6	2	18	Finished	1/4"	11.5	1	Standard	3764N106	00000
	6	2	20	Finished	1/4"	12.7	1	Standard	3764N107	00000
	6	2	20	Finished	5 mm	12.2	1	Standard	3684N12	0000
	6	2	24	Finished	1/4"	15.3	2	Standard	3764N108	00000
	6	2	26	Finished	1/4"	16.6	2	Standard	3764N109	00000


	6	2	28	Finished	1/4"	17.8	2	Standard	3764N11	00000
	6	2	32	Finished	1/4"	20.4	2	Standard	3764N112	00000
	6	2	36	Finished	1/4"	22.9	2	Standard	3764N113	00000
	6	2	40	Finished	1/4"	25.5	2	Standard	3764N114	00000
	6	2	48	Finished	1/4"	30.6	2	Standard	3764N116	00000
	6	2	50	Finished	1/4"	31.8	2	Standard	3764N117	00000
	6	2	60	Finished	1/4"	38.2	2	Standard	3764N118	00000
	6	2	72	Finished	1/4"	45.8	—	Standard	3764N119	00000
	6	2	100	Finished	5/16"	63.7	—	Standard	3764N122	00000
	6	2	120	Finished	3/8"	76.4	—	Standard	3764N123	00000


	9	2	20	Finished	5 mm	12.2	1	Standard	3684N13	0000
	12	2	20	Finished	5 mm	12.2	1	Standard	3684N14	0000

GT Timing Belt Idler Pulleys

Toothed

Without Teeth

Get pitch-perfect compatibility with these free-spinning pulleys. They mesh with belts that have curved GT-profile teeth, reducing vibration and wear. As they rotate on their bearings, these pulleys press up against belts to reduce slack and keep the system moving smoothly. All are compatible with GatesPowerGrip GT, 2GT, GT2, GT3, and GT4 series. Idler pulleys are often used with belt tensioners.

Corrosion-Resistant Aluminum—Lightweight and resist rust in wet environments. Although aluminum pulleys are one-third the weight of iron pulleys, they aren't as strong.

Without Teeth—These pulleys press against the smooth side of the belt instead of the toothed side to maintain tension.

						Toothed			Without Teeth
	For Max. Belt Wd., mm	Pitch, mm	For Shaft Dia., mm	OD, mm	Bearing Type	No. of Teeth		Each		Each
For 2MGT Trade Size







				Corrosion-Resistant Aluminum

				6	2	3	15	Ball	20	3693N211	00000	3693N214	00000


				6	2	5	15	Ball	20	3693N11	0000	3693N14	0000
				9	2	3	15	Ball	20	3693N212	0000	3693N215	0000
				9	2	5	15	Ball	20	3693N12	0000	3693N15	0000
				12	2	3	15	Ball	20	3693N213	0000	3693N216	0000
				12	2	5	15	Ball	20	3693N13	0000	3693N16	0000