1" Shaft Diameter Chain and Belt Pulleys

Filter by

System of Measurement

Belt Trade Size

Shaft Type

V-Belt Type

Pulley Type

For Maximum Belt Width

Pitch Diameter

Bore Type

Number of Grooves

Width

Shaft Mount Type

Keyway Width

Number of Teeth

Diameter

Overall Width

Pitch

Material

Tooth Profile

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

Yes

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

RoHS

Compliant

Export Control Classification Number (ECCN)

EAR99

Forward

How can we improve?

70 Products

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

Heavy Duty V-Belt Drive Pulleys


Solid Body	Spoked Body

						Keyway
	For Shaft Dia.	Pitch Dia. (For Belt Trade Size)	Wd.	Overall Wd.	Groove Dp.	Wd.	Dp.	Material	Body Type	Includes		Each
2.5" OD



		1"	1.7" (4L, A, AX), 2.1" (5L, B, BX)	7/8"	1 9/16"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K136	000000


		3.55" OD



				1"	2.8" (4L, A, AX), 3.2" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K185	00000


				3.75" OD



						1"	3" (4L, A, AX), 3.4" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K195	00000


						3.95" OD



								1"	3.2" (4L, A, AX), 3.6" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K216	00000


								4.15" OD



										1"	3.4" (4L, A, AX), 3.8" (5L, B, BX)	7/8"	1 1/2"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K225	00000


										4.25" OD



												1"	3.5" (4L, A, AX), 3.9" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K237	00000


												4.45" OD



														1"	3.7" (4L, A, AX), 4.1" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K243	00000


														4.75" OD



																1"	4" (4L, A, AX), 4.4" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K256	00000


																4.95" OD



																		1"	4.2" (4L, A, AX), 4.6" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K267	00000


																		5.15" OD



	1"																		4.4" (4L, A, AX), 4.8" (5L, B, BX)	7/8"	1 5/8"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K275	00000


	5.25" OD



		1"	4.5" (4L, A, AX), 4.9" (5L, B, BX)																	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K285	00000


		5.45" OD



				1"																4.7" (4L, A, AX), 5.1" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K295	00000


				5.75" OD



																				1"	5" (4L, A, AX), 5.4" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K316	00000


						5.95" OD



																				1"	5.2" (4L, A, AX), 5.6" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K327	00000


								6.25" OD



																				1"	5.5" (4L, A, AX), 5.9" (5L, B, BX)	7/8"	1 9/32"	5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6204K335	00000


										6.45" OD



																				1"	5.7" (4L, A, AX), 6.1" (5L, B, BX)	7/8"	1 5/16"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K351	00000


																				6.75" OD



																				1"	6" (4L, A, AX), 6.4" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K362	00000


																				6.95" OD



																				1"	6.2" (4L, A, AX), 6.6" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K372	00000


																				7.45" OD



1"																				6.7" (4L, A, AX), 7.1" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K522	00000


7.75" OD



	1"																			7" (4L, A, AX), 7.4" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K393	00000


	8.75" OD



		1"																	8" (4L, A, AX), 8.4" (5L, B, BX)		7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K414	00000


		9.25" OD



																			1"		8.5" (4L, A, AX), 8.9" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K532	00000


				9.75" OD



																			1"		9" (4L, A, AX), 9.4" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K422	00000


						10.25" OD



																			1"		9.5" (4L, A, AX), 9.9" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K541	000000


								10.75" OD



																			1"		10" (4L, A, AX), 10.4" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K552	000000


																			11.75" OD



																			1"		11" (4L, A, AX), 11.4" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K562	000000


																			12.75" OD



																			1"		12" (4L, A, AX), 12.4" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K442	000000


																			13.75" OD



																			1"		13" (4L, A, AX), 13.4" (5L, B, BX)	7/8"	1 17/32"	5/8"	1/4"	1/8"	Cast Iron	Spoked	One Set Screw	6204K573	000000

V-Belt Drive Pulleys

For 4L, A Belts


Zinc, Spoked Body

							Keyway
No. of Grooves	OD	For Shaft Dia.	Pitch Dia.	Wd.	Overall Wd.	Groove Dp.	Wd.	Dp.	Material	Body Type	Includes		Each
1	6"	1"	5.75"	45/64"	1 11/32"	0.5"	1/4"	1/8"	Zinc Alloy	Spoked	One Set Screw	6245K511	000000
1	7"	1"	6.75"	45/64"	1 11/32"	0.5"	1/4"	1/8"	Zinc Alloy	Spoked	One Set Screw	6245K541	00000
1	8"	1"	7.75"	45/64"	1 11/32"	0.5"	1/4"	1/8"	Zinc Alloy	Spoked	One Set Screw	6245K571	00000
1	9"	1"	8.75"	45/64"	1 11/32"	0.5"	1/4"	1/8"	Zinc Alloy	Spoked	One Set Screw	6245K944	00000
1	10"	1"	9.75"	45/64"	1 11/32"	0.5"	1/4"	1/8"	Zinc Alloy	Spoked	One Set Screw	6245K954	00000

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.

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

Plain Bore—Do it your way—machine the bore to your exact shaft size or add a set screw or keyway.

	Bore Type	For Shaft Dia.	Pitch Dia.	No. of Flanges	Hub Type		Each
For H Trade Size







	Steel

	2"	0.500"	22	Plain	1"	3.501"	2	Standard	6495K169	0000000


	2"	0.500"	24	Plain	1"	3.82"	2	Standard	6495K171	000000
	2"	0.500"	26	Plain	1"	4.138"	2	Standard	6495K172	000000


	For XH Trade Size







					Iron

					2"	0.875"	18	Plain	1"	5.013"	2	Standard	5728N11	000000


					2"	0.875"	20	Plain	1"	5.57"	2	Standard	5728N12	000000
					3"	0.875"	18	Plain	1"	5.013"	2	Standard	5728N13	000000
					3"	0.875"	20	Plain	1"	5.57"	2	Standard	5728N14	000000
					4"	0.875"	18	Plain	1"	5.013"	2	Standard	5728N15	000000
					4"	0.875"	20	Plain	1"	5.57"	2	Standard	5728N16	000000
					4"	0.875"	24	Plain	1"	6.685"	2	Standard	5728N17	000000
					4"	0.875"	26	Plain	1"	7.241"	2	Standard	5728N18	000000

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 L Trade Size







	Steel

	1"	18	0.375"	1"	2 1/8"	Roller	7769N13	000000


	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

High-Torque HTD Timing Belt Pulleys


Plain 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.

Plain Bore—Do it your way—machine the bore to your exact shaft size or add a set screw or keyway.

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







	Iron

	15	5	34	Plain	1/2"	54.1	2	Standard	6497K82	000000

Flat Belt Drive Pulleys

Also known as paper-plant pulleys, these are made of a composite that minimizes belt slippage and wear.

					Keyway
For Belt Wd.	OD	For Shaft Dia.	Dia.	Wd.	Wd.	Dp.	Material	Includes		Each
3"	2.5"	1"	2.5"	3 1/2"	1/4"	1/8"	Laminate	Two Set Screws	6231K153	0000000
3"	3"	1"	3"	3 1/2"	1/4"	1/8"	Laminate	Two Set Screws	6231K203	000000
3"	3.5"	1"	3.5"	3 1/2"	1/4"	1/8"	Laminate	Two Set Screws	6231K223	000000
4"	4"	1"	4"	4 1/2"	1/4"	1/8"	Laminate	Two Set Screws	6231K283	000000

Adjustable-Pitch V-Belt Drive Pulleys


1 Groove	2 Grooves	1 Groove	2 Grooves

Increase efficiency, vary speed, and extend the life of your drive by changing the pitch on these drive pulleys. Turn the sides of the pulley on the threaded hub to increase or decrease the pitch.

						Keyway
	No. of Grooves	For Shaft Dia.	Pitch Dia. (For Belt Trade Size)	Wd.	Overall Wd.	Wd.	Dp.	Material	Body Type	Includes		Each
3.75" OD



		1	1"	2.7" to 3.5" (3L), 2.9" to 3.9" (4L, A, AX), 3" to 4" (5L, B, BX)	9/16" to 1"	1 3/4"	1/4"	1/8"	Cast Iron	Solid	Two Set Screws	6205K125	000000


		4.15" OD



				1	1"	2.7" to 3.5" (3L), 2.8" to 3.8" (4L, A, AX), 3.1" to 4.1" (5L, B, BX)	3/4" to 1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6205K135	000000


				4.75" OD



						1	1"	3.3" to 4.1" (3L), 3.4" to 4.4" (4L, A, AX), 3.7" to 4.7" (5L, B, BX)	3/4" to 1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6205K145	000000


						2	1"	3.4" to 4.2" (3L), 3.5" to 4.5" (4L, A), 3.6" to 4.6" (5L, B)	1 3/8" to 2"	3"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6205K775	000000


						5.35" OD



								1	1"	4" to 4.8" (3L), 4.1" to 5.1" (4L, A), 4.2" to 5.2" (5L, B)	3/4" to 1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6205K773	000000


								6" OD



										2	1"	4.2" to 5.2" (4L, A), 4.4" to 5.6" (5L, B)	1 5/8" to 2 3/8"	3 1/4"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6205K777	000000

Constant-Tension V-Belt Drive Pulleys

A built-in spring maintains tension on your belt.

For 4L, 5L, A, AX, B, BX Belts

						Keyway
No. of Grooves	OD	For Shaft Dia.	Pitch Dia.	Wd.	Overall Wd.	Wd.	Dp.	Material	Body Type	Includes		Each
1	5"	1"	2.37" to 4.84"	15/16"	3 5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	6568K35	0000000

Round Belt Drive Pulleys

Mount these pulleys directly onto a shaft to transmit rotary motion and torque. Commonly used in harsh environments and wet conditions, they are corrosion and abrasion resistant. The bore can be machined to your exact specifications.

For Belt Dia.	OD	For Shaft Dia.	Dia.	Wd.	Groove Dp.	For Max. Shaft Dia.	Material		Each
1/4"	4"	1/2"	3.72"	1/2"	0.14"	1"	UHMW Polyethylene	6284K56	000000
1/2"	4"	1/2"	3.47"	3/4"	0.265"	1"	UHMW Polyethylene	6284K83	00000

Flat Belt Idler Pulleys


Cast Iron	Steel

These pulleys spin freely on built-in bearings to maintain tension for reduced wear and vibration. They’re often used with belt tensioners (sold separately).

Ball Bearing—Pulleys with ball bearings ensure proper positioning inside a tube or housing. They’re sealed to block out dust and contaminants better than pulleys with needle roller bearings.

Needle Roller Bearing—Pulleys with needle roller bearings minimize internal friction.

Cast Iron and Steel—Cast iron and steel pulleys are more durable than nylon pulleys.

	OD	For Shaft Dia.	Dia.	Wd.	Groove Dp.	Material		Each
Ball Bearing



	4 1/2"	7"	1"	6"	5"	0.5"	Cast Iron	1355K17	0000000


	6 1/4"	7"	1"	6"	6 3/4"	0.5"	Cast Iron	1355K18	000000


	Needle Roller Bearing



			11/16"	2.5"	1"	2 1/4"	7/8"	0.125"	Steel	1355K3	00000


			1 1/16"	4.5"	1"	4"	1 7/16"	0.25"	Cast Iron	1355K4	000000
			2 1/16"	4.5"	1"	4"	2 7/16"	0.25"	Cast Iron	1355K5	000000
			3 1/16"	4.5"	1"	4"	3 7/16"	0.25"	Cast Iron	1355K6	000000