V Belt Idler Pulleys | McMaster-Carr

	System of Measurement System of Measurement

Inch

	OD OD

3.1"

7 1/2"

	ID ID

3/8"

1/2"

	For V-Belt Type For V-Belt Type


Standard	Cogged

	Pulley Type Pulley Type

	Idler

	For Belt Trade Size For Belt Trade Size

	For Belt Type For Belt Type

	For Shaft Diameter For Shaft Diameter

3/8"

1/2"

	Material Material

Plastic

	Bearing Type Bearing Type

	Ball

	For Shaft Type For Shaft Type

	Round

	Number of Grooves Number of Grooves

	Groove Depth Groove Depth

	Bore Type Bore Type

	Finished

	Pitch Diameter Pitch Diameter

	Shaft Mount Type Shaft Mount Type

	Slip Fit

	Width Width

	Bearing Material Bearing Material

Steel

	Bearing Seal Type Bearing Seal Type

Double Sealed

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Body Type Body Type

Solid

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

12 Products

V-Belt Idler Pulleys

These pulleys spin freely on built-in ball bearings to maintain tension for reduced wear and vibration. Commonly used with belt tensioners (sold separately), they are lightweight and corrosion and abrasion resistant. Bearings are double sealed to keep dirt out.

For technical drawings and 3-D models, click on a part number.

For 4L, A, AX Belts
OD	For Shaft Dia.	Pitch Dia.	Wd.	Groove Dp.	Material	Body Type		Each
3"	3/8"	2"	45/64"	0.5"	Nylon Plastic	Solid	0000000	000000
3"	1/2"	2"	45/64"	0.5"	Nylon Plastic	Solid	0000000	00000
4"	3/8"	2.99"	45/64"	0.5"	Nylon Plastic	Solid	0000000	00000
4"	1/2"	2.99"	45/64"	0.5"	Nylon Plastic	Solid	0000000	00000
6"	1/2"	5.12"	23/32"	0.46"	Nylon Plastic	Solid	0000000	00000
7.5"	1/2"	6.6"	23/32"	0.45"	Nylon Plastic	Solid	0000000	00000
For 5L, B, BX Belts
3.1"	3/8"	1.84"	25/32"	0.63"	Nylon Plastic	Solid	0000000	00000
3.1"	1/2"	1.84"	25/32"	0.63"	Nylon Plastic	Solid	0000000	00000
4"	3/8"	2.84"	55/64"	0.58"	Nylon Plastic	Solid	0000000	00000
4"	1/2"	2.84"	55/64"	0.58"	Nylon Plastic	Solid	0000000	00000
5"	3/8"	3.84"	51/64"	0.6"	Nylon Plastic	Solid	0000000	00000
5"	1/2"	3.84"	51/64"	0.6"	Nylon Plastic	Solid	0000000	00000