Adjustable Sheave Pulleys

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Shaft Diameter

Belt Trade Size

V-Belt Type

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60 Products

Adjustable-Pitch V-Belt Pulleys

1 Groove

2 Grooves

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

1 Groove

2 Grooves

					Keyway
No. of Grooves	For Shaft Dia.	Pitch Dia. (For Belt Trade Size)	Wd.	O'all Wd.	Wd.	Dp.	Material	Body Type	Includes		Each
3.15" OD
1	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
1	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
1	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
1	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
3.35" OD
2	1/2"	1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX)	1 3/8"-2"	3"	__	__	Cast Iron	Solid	One Set Screw	0000000	000000
2	5/8"	1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX)	1 3/8"-2"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	3/4"	1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX)	1 3/8"-2"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	7/8"	1.9"-2.7" (3L), 2"-3" (4L, A, AX), 2.5"-3.3" (5L, B, BX)	1 3/8"-2"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
3.75" OD
1	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
1	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
1	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
1	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	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
3.95" OD
2	1/2"	2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX)	1 3/8"-2 1/8"	3"	__	__	Cast Iron	Solid	One Set Screw	0000000	000000
2	5/8"	2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX)	1 3/8"-2 1/8"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	3/4"	2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX)	1 3/8"-2 1/8"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	7/8"	2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX)	1 3/8"-2 1/8"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	1 1/8"	2.5"-3.3" (3L), 2.6"-3.6" (4L, A, AX), 2.9"-3.9" (5L, B, BX)	1 3/8"-2 1/8"	3"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000
4.15" OD
1	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
1	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
1	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
1	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	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 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	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
1	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
1	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
1	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	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 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
2	1/2"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	1 3/8"-2 1/8"	3"	__	__	Cast Iron	Solid	One Set Screw	0000000	000000
2	5/8"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	1 3/8"-2 1/8"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	3/4"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	1 3/8"-2 1/8"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	7/8"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	1 3/8"-2 1/8"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	1"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	1 3/8"-2 1/8"	3"	__	__	Cast Iron	Solid	One Set Screw	0000000	000000
2	1 1/8"	3.3"-4.1" (3L), 3.4"-4.4" (4L, A, AX), 3.7"-4.7" (5L, B, BX)	1 3/8"-2 1/8"	3"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000
5.35" OD
1	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	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 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
2	7/8"	3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX)	1 3/8"-2 1/8"	3"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
2	1"	3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX)	1 3/8"-2 1/8"	3"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000
2	1 1/8"	3.9"-4.7" (3L), 4"-5" (4L, A, AX), 4.3"-5.3" (5L, B, BX)	1 3/8"-2 1/8"	3"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000

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

2 Grooves

1 Groove

					Keyway
No. of Grooves	For Shaft Dia.	Pitch Dia. (For Belt Trade Size)	Wd.	O'all Wd.	Wd.	Dp.	Material	Body Type	Includes		Each
5.95" OD
2	3/4"	4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX)	1 5/8"-2 3/8"	3 1/4"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	0000000
2	1"	4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX)	1 5/8"-2 3/8"	3 1/4"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000
2	1 1/8"	4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX)	1 5/8"-2 3/8"	3 1/4"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000
2	1 1/4"	4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX)	1 5/8"-2 3/8"	3 1/4"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000
2	1 3/8"	4.2"-5.2" (4L, A, AX), 4.5"-5.5" (5L, B, BX)	1 5/8"-2 3/8"	3 1/4"	5/16"	5/32"	Cast Iron	Solid	One Set Screw	0000000	000000
6.5" OD
1	3/4"	4.7"-5.7" (4L, A, AX), 4.8"-6" (5L, B, BX)	7/8"-1 1/4"	2 7/32"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	000000
1	7/8"	4.7"-5.7" (4L, A, AX), 4.8"-6" (5L, B, BX)	7/8"-1 1/4"	2 7/32"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	00000000	000000
1	1 1/8"	4.7"-5.7" (4L, A, AX), 4.8"-6" (5L, B, BX)	7/8"-1 1/4"	2 7/32"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	00000000	000000

Constant-Tension V-Belt Pulleys

A built-in spring maintains tension on your belt.

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

					Keyway
OD	For Shaft Dia.	Pitch Dia.	Wd.	O'all Wd.	Wd.	Dp.	Material	Body Type	Includes		Each
For 4L, 5L, A, AX, B, BX Belts
3.25"	1/2"	1.91"-3.15"	11/16"	2 3/8"	__	__	Cast Iron	Solid	One Set Screw	0000000	000000
3.25"	5/8"	1.91"-3.15"	11/16"	2 3/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	00000
3.25"	3/4"	1.91"-3.15"	11/16"	2 3/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	00000
4"	1/2"	1.95"-3.9"	11/16"	2 7/16"	__	__	Cast Iron	Solid	One Set Screw	0000000	000000
4"	5/8"	1.95"-3.9"	11/16"	2 7/16"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
4"	3/4"	1.95"-3.9"	11/16"	2 7/16"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
5"	5/8"	2.37"-4.84"	15/16"	3 5/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
5"	3/4"	2.37"-4.84"	15/16"	3 5/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
5"	7/8"	2.37"-4.84"	15/16"	3 5/8"	3/16"	3/32"	Cast Iron	Solid	One Set Screw	0000000	000000
5"	1"	2.37"-4.84"	15/16"	3 5/8"	1/4"	1/8"	Cast Iron	Solid	One Set Screw	0000000	000000