2 mm Pitch Sprockets | McMaster-Carr

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32 Products

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	00000000	000000


	6	2	14	Finished	1/8"	8.9	1	Standard	00000000	00000
	6	2	15	Finished	3/16"	9.6	1	Standard	00000000	00000
	6	2	16	Finished	3/16"	10.2	1	Standard	00000000	00000
	6	2	16	Finished	5 mm	9.7	1	Standard	0000000	0000
	6	2	17	Finished	1/4"	10.8	1	Standard	00000000	00000
	6	2	18	Finished	1/4"	11.5	1	Standard	00000000	00000
	6	2	20	Finished	1/4"	12.7	1	Standard	00000000	00000
	6	2	20	Finished	5 mm	12.2	1	Standard	0000000	0000
	6	2	24	Finished	1/4"	15.3	2	Standard	00000000	00000
	6	2	26	Finished	1/4"	16.6	2	Standard	00000000	00000


	6	2	28	Finished	1/4"	17.8	2	Standard	0000000	00000
	6	2	32	Finished	1/4"	20.4	2	Standard	00000000	00000
	6	2	36	Finished	1/4"	22.9	2	Standard	00000000	00000
	6	2	40	Finished	1/4"	25.5	2	Standard	00000000	00000
	6	2	48	Finished	1/4"	30.6	2	Standard	00000000	00000
	6	2	50	Finished	1/4"	31.8	2	Standard	00000000	00000
	6	2	60	Finished	1/4"	38.2	2	Standard	00000000	00000
	6	2	72	Finished	1/4"	45.8	—	Standard	00000000	00000
	6	2	100	Finished	5/16"	63.7	—	Standard	00000000	00000
	6	2	120	Finished	3/8"	76.4	—	Standard	00000000	00000


	9	2	20	Finished	5 mm	12.2	1	Standard	0000000	0000
	12	2	20	Finished	5 mm	12.2	1	Standard	0000000	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	00000000	00000	00000000	00000


				6	2	5	15	Ball	20	0000000	0000	———	0
				9	2	3	15	Ball	20	00000000	0000	00000000	0000
				9	2	5	15	Ball	20	0000000	0000	———	0
				12	2	3	15	Ball	20	00000000	0000	00000000	0000
				12	2	5	15	Ball	20	0000000	0000	———	0