Flat-Belt Iron Pulleys | McMaster-Carr

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13 Products

Flat Belt Idler Pulleys

Cast Iron

Steel

Image of Attribute. Front orientation. Contains Annotated.

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



	11/16"	2.5"	0.635"	2 1/4"	7/8"	0.125"	Cast Iron	0000000	000000


	1 1/16"	4.5"	0.635"	4"	1 7/16"	0.25"	Cast Iron	0000000	000000
	2 1/16"	4.5"	0.635"	4"	2 7/16"	0.25"	Cast Iron	0000000	000000
	3 1/16"	4.5"	0.635"	4"	3 7/16"	0.25"	Cast Iron	0000000	000000
	4 1/2"	7"	1"	6"	5"	0.5"	Cast Iron	0000000	000000
	6 1/4"	7"	1"	6"	6 3/4"	0.5"	Cast Iron	0000000	000000


	Needle Roller Bearing



			7/16"	1.4"	1/2"	1 1/8"	5/8"	0.125"	Steel	000000	00000


			9/16"	1.8"	1/2"	1 3/8"	13/16"	0.187"	Steel	000000	00000
			11/16"	2.5"	1"	2 1/4"	7/8"	0.125"	Steel	000000	00000
			1 1/16"	4.5"	1"	4"	1 7/16"	0.25"	Cast Iron	000000	000000
			2 1/16"	4.5"	1"	4"	2 7/16"	0.25"	Cast Iron	000000	000000
			3 1/16"	4.5"	1"	4"	3 7/16"	0.25"	Cast Iron	000000	000000
			4 1/2"	7"	1 1/2"	6"	5"	0.5"	Cast Iron	0000000	000000