Timing-Belt Idler Pulleys

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System of Measurement

Inch

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For Maximum Belt Width

Shaft Diameter

Belt Trade Size

Pitch

Idler Type

Number of Teeth

Diameter

Width

Tooth Profile

Material

Manufacturer Equivalent Series

Bearing Type

Overall Width

Hub Diameter

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

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Compliant

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DFARS Specialty Metals

Exempt

RoHS

Compliant

Export Control Classification Number (ECCN)

Shaft Mount Type

Pitch Diameter

Inside Width

Outside Width

24 Products

Tooth Profile

Trapezoidal

The original tooth profile maintains tension on XL, L, and H timing belts

7 products

Curved (HTD)

Maintain tension on H8M timing belts

1 product

Tooth Profile

Modified Curved (GT)

Maintain tension on 2MGT, 8MGT, and 14MGT timing belts

16 products

Performance

Corrosion Resistant

Won't rust when exposed to water

12 products

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.

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

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


				For 8MGT Trade Size







								Iron

								20	8	20	90	Roller	32	7769N21	000000	———	0


								30	8	30	100	Roller	36	7769N22	000000	———	0
								62	8	30	100	Roller	36	7769N28	000000	———	0


								For 14MGT Trade Size







												Iron

												37	14	40	146	Roller	30	7769N31	000000	———	0

Timing Belt Idler Pulleys

Reduce vibration and wear on your timing belt with idler pulleys that maintain constant tension. Their trapezoidal teeth mesh with matching grooves on your timing belt, pressing against the belt to take up slack. Plus, they rotate freely on bearings to keep the belt moving smoothly. Idler pulleys are often used with belt tensioners.

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

	For Shaft Dia.	OD	Bearing Type		Each
For XL Trade Size







	Steel

	1/2"	24	0.2"	1/2"	1 1/2"	Roller	7769N12	000000


	3/4"	22	0.2"	1/2"	1 3/8"	Roller	7769N11	00000


	For L Trade Size







					Steel

					1"	18	0.375"	1"	2 1/8"	Roller	7769N13	00000


					1"	22	0.375"	1"	2 5/8"	Roller	7769N14	00000


					For H Trade Size







									Steel

									1"	16	0.5"	1"	2 1/2"	Roller	7769N15	00000


									2"	16	0.5"	1"	2 1/2"	Roller	7769N16	00000




											Iron

											3"	18	0.5"	1"	2 13/16"	Roller	7769N17	000000

HTD Timing Belt Idler Pulleys

Keep HTD timing belt systems running tightly with these idler pulleys. Curved teeth press against the belt as bearings rotate freely, reducing vibration and wear. All are compatible with Gates PowerGrip HTD, Omega HP, and Carlisle RPP series. Idler pulleys are often used with belt tensioners.

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

	For Shaft Dia.	OD	Bearing Type		Each
For H8M Trade Size







	Iron

	30	19	8	1"	1 7/8"	Roller	7760N11	000000