3L Pulleys | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	For Shaft Diameter For Shaft Diameter

	For Belt Trade Size For Belt Trade Size	Show

	For Belt Trade Size For Belt Trade Size	Hide

	OD OD

	ID ID

	Pulley Type Pulley Type

	Standard

	For V-Belt Type For V-Belt Type


Standard	Cogged

	Material Material

	For Shaft Type For Shaft Type

	Keyed
	Round

	Width Width

	Number of Grooves Number of Grooves

	Bore Type Bore Type

	Finished

	For Belt Type For Belt Type

	Pitch Diameter Pitch Diameter

	Shaft Mount Type Shaft Mount Type

Set Screw

	Body Type Body Type

Solid

	Overall Width Overall Width

	Groove Depth Groove Depth

1/4"

3/8"

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

	Color Color

	Orange

	Keyway Width Keyway Width

3/16"

1/4"

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

REACH Compliant

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44 Products

V-Belt Pulleys

Zinc, Solid Body

Pulleys for 2L and 3L belt are for fractional-horsepower V-belt drives.

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

For 3L Belts
OD	For Shaft Dia.	Pitch Dia.	Wd.	O'all Wd.	Groove Dp.	Material	Body Type	Includes		Each
1"	5/16"	0.9"	1/2"	7/8"	0.25"	Zinc	Solid	One Set Screw	00000000	00000
1"	3/8"	0.9"	1/2"	7/8"	0.25"	Zinc	Solid	One Set Screw	00000000	0000
2"	1/4"	1.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	0000
2"	5/16"	1.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	0000
2"	3/8"	1.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	0000
2"	1/2"	1.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	0000
2"	5/8"	1.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	0000
2.5"	3/8"	2.4"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
2.5"	1/2"	2.4"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
2.5"	5/8"	2.4"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
3"	3/8"	2.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
3"	1/2"	2.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
3"	5/8"	2.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
3.5"	3/8"	3.4"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
3.5"	1/2"	3.4"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
3.5"	5/8"	3.4"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
4"	3/8"	3.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
4"	1/2"	3.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000
4"	5/8"	3.9"	1/2"	1"	0.375"	Zinc	Solid	One Set Screw	00000000	00000

Adjustable-Pitch V-Belt Pulleys

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

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

For 3L,4L, A, AX and 5L, B, BX Belts

				Keyway
For Shaft Dia.	Pitch Dia. (For Belt Trade Size)	Wd.	O'all Wd.	Wd.	Dp.	Material	Body Type	Includes		Each
3.15" OD
1/2"	1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX)	21/32"-31/32"	1 7/8"	__	__	Cast Iron	Solid	One Set Screw	00000000	000000
5/8"	1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX)	21/32"-31/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
3/4"	1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX)	21/32"-31/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
7/8"	1.7"-2.5" (3L), 1.9"-2.9" (4L, A, AX), 2.4"-3.2" (5L, B, BX)	21/32"-31/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
3.75" OD
1/2"	2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX)	21/32"-1 1/32"	1 7/8"	__	__	Cast Iron	Solid	One Set Screw	00000000	00000
5/8"	2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX)	21/32"-1 1/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
3/4"	2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX)	21/32"-1 1/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
7/8"	2.3"-3.1" (3L), 2.4"-3.4" (4L, A, AX), 2.7"-3.7" (5L, B, BX)	21/32"-1 1/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
1"	2.7"-3.5" (3L), 2.9"-3.9" (4L, A, AX), 3"-4" (5L, B, BX)	9/16"-1"	1 3/4"	1/4"	1/8"	Cast Iron	Solid	Two Set Screws	00000000	00000
4.15" OD
1/2"	2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX)	21/32"-1 1/32"	1 7/8"	__	__	Cast Iron	Solid	One Set Screw	00000000	00000
5/8"	2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX)	21/32"-1 1/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
3/4"	2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX)	21/32"-1 1/32"	1 7/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
7/8"	2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
1"	2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	00000000	00000
1 1/8"	2.7"-3.5" (3L), 2.8"-3.8" (4L, A, AX), 3.1"-4.1" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	00000000	00000
4.75" OD
1/2"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	11/16"-1 1/16"	1 15/16"	__	__	Cast Iron	Solid	One Set Screw	00000000	00000
5/8"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	11/16"-1 1/16"	1 15/16"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
3/4"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	11/16"-1 1/16"	1 15/16"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	00000
7/8"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	000000
1"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	00000000	000000
1 1/8"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	00000000	000000
5.35" OD
7/8"	3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	000000
1"	3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	00000000	000000
1 1/8"	3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX)	3/4"-1 1/8"	2 5/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	00000000	000000

V-Belt Trade Number Identifiers

Quickly determine the size of any belt.

For Belt Trade Size	Material	Color	Maximum Length Measured		Each
2L, 3L, 4L, 5L	Aluminum and Plastic	Orange	100"	0000000	0000000