Triple Pulleys | McMaster-Carr

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53 Products

Quick-Disconnect (QD) Bushing-Bore V-Belt Drive Pulleys

The same drive pulley can be used with different shaft diameters; choose a compatible quick-disconnect bushing with the bore size you need.

For A, AX and B, BX Belts


3 Grooves

No. of Grooves	OD	Pitch Dia. (For Belt Trade Size)	Wd.	Groove Dp.	For Bushing Trade No.	Material	Body Type	Each
3	3.75"	3" (A, AX), 3.4" (B, BX)	2 1/2"	0.58"	SH	Steel	Solid	000000
3	3.95"	3.2" (A, AX), 3.6" (B, BX)	2 1/2"	0.58"	SH	Steel	Solid	00000
3	4.15"	3.4" (A, AX), 3.8" (B, BX)	2 1/2"	0.58"	SH	Steel	Solid	00000
3	4.35"	3.6" (A, AX), 4" (B, BX)	2 1/2"	0.58"	SH	Steel	Solid	000000
3	4.55"	3.8" (A, AX), 4.2" (B, BX)	2 1/2"	0.58"	SH	Steel	Solid	000000
3	4.75"	4" (A, AX), 4.4" (B, BX)	2 1/2"	0.58"	SH	Steel	Solid	000000
3	4.95"	4.2" (A, AX), 4.6" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	5.15"	4.4" (A, AX), 4.8" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	5.35"	4.6" (A, AX), 5" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	5.55"	4.8" (A, AX), 5.2" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	5.75"	5" (A, AX), 5.4" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	5.95"	5.2" (A, AX), 5.6" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	6.15"	5.4" (A, AX), 5.8" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	6.35"	5.6" (A, AX), 6" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	6.55"	5.8" (A, AX), 6.2" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	6.75"	6" (A, AX), 6.4" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	6.95"	6.2" (A, AX), 6.6" (B, BX)	2 1/2"	0.58"	SD	Steel	Solid	000000
3	7.15"	6.4" (A, AX), 6.8" (B, BX)	2 1/2"	0.58"	SD	Cast Iron	Solid	000000
3	7.35"	6.6" (A, AX), 7" (B, BX)	2 1/2"	0.58"	SK	Cast Iron	Solid	000000
3	7.75"	7" (A, AX), 7.4" (B, BX)	2 1/2"	0.58"	SK	Cast Iron	Solid	000000
3	8.35"	7.6" (A, AX), 8" (B, BX)	2 1/2"	0.58"	SK	Cast Iron	Solid	000000
3	8.95"	8.2" (A, AX), 8.6" (B, BX)	2 1/2"	0.58"	SK	Cast Iron	Solid	000000
3	9.75"	9" (A, AX), 9.4" (B, BX)	2 1/2"	0.58"	SK	Cast Iron	Solid	000000
3	11.35"	10.6" (A, AX), 11" (B, BX)	2 1/2"	0.58"	SK	Cast Iron	Spoked	000000
3	12.75"	12" (A, AX), 12.4" (B, BX)	2 1/2"	0.58"	SK	Cast Iron	Spoked	000000

For 3V Belts


3 Grooves

No. of Grooves	OD	Pitch Dia. (For Belt Trade Size)	Wd.	Groove Dp.	For Bushing Trade No.	Material	Body Type	Each
3	3.35"	3.3" (3V)	1 1/2"	0.34"	SH	Cast Iron	Solid	000000
3	3.65"	3.6" (3V)	1 1/2"	0.34"	SH	Cast Iron	Solid	00000
3	4.12"	4.07" (3V)	1 1/2"	0.34"	SH	Cast Iron	Solid	00000
3	5"	4.95" (3V)	1 1/2"	0.34"	SDS	Cast Iron	Solid	00000

Taper-Lock Bushing-Bore V-Belt Drive Pulleys

Mount these drive pulleys with a taper-lock bushing for a tight, wobble-free hold on your shaft. These pulleys transfer force from the shaft to a V-belt in a power transmission system, and also help with misalignment. Made of cast iron, these pulleys are durable and resist wear.

Depending on the taper-lock bushing you choose, the same drive pulley can be used with different shaft diameters.

For SPA and XPA Belts


3 Grooves

No. of Grooves	OD, mm	Pitch Dia., mm	Wd., mm	Overall Wd., mm	Groove Dp., mm	For Bushing Type	Material	Body Type		Each
3	76.6	71	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	000000
3	90.6	85	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	00000
3	95.6	90	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	00000
3	111.6	106	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	00000
3	123.6	118	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	00000
3	130.6	125	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	00000
3	145.6	140	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	000000
3	155.6	150	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	000000
3	165.6	160	50	50	13.8	Taper Lock	Cast Iron	Solid	00000000	000000
3	205.6	200	50	50	13.8	Taper Lock	Cast Iron	Solid	0000000	000000

For SPB and XPB Belts


3 Grooves

No. of Grooves	OD, mm	Pitch Dia., mm	Wd., mm	Overall Wd., mm	Groove Dp., mm	For Bushing Type	Material	Body Type		Each
3	167	160	63	63	17.5	Taper Lock	Cast Iron	Solid	00000000	0000000
3	187	180	63	63	17.5	Taper Lock	Cast Iron	Solid	0000000	000000
3	197	190	63	63	17.5	Taper Lock	Cast Iron	Solid	00000000	000000
3	231	224	63	63	17.5	Taper Lock	Cast Iron	Solid	00000000	000000
3	342	335	63	63	17.5	Taper Lock	Cast Iron	Solid	00000000	000000
3	457	450	63	89	17.5	Taper Lock	Cast Iron	Solid	00000000	000000

For SPZ and XPZ Belts


3 Grooves

No. of Grooves	OD, mm	Pitch Dia., mm	Wd., mm	Overall Wd., mm	Groove Dp., mm	For Bushing Type	Material	Body Type	Each
3	89	85	40	40	11	Taper Lock	Cast Iron	Solid	000000
3	116	112	40	40	11	Taper Lock	Cast Iron	Solid	00000
3	136	132	40	40	11	Taper Lock	Cast Iron	Solid	00000

Adjustable-Speed V-Belt Drive Pulleys


3 Grooves

Also known as step-cone pulleys, these have multiple groove sizes so you can quickly change rotation speed by moving your belt to a different groove. Use with fractional-horsepower motors for drives with frequent speed changes.

						Keyway
	No. of Grooves	OD (Pitch Dia.)	For Shaft Dia.	Wd.	Groove Dp.	Wd.	Dp.	Material	Body Type	Includes		Each
For 4L, A Belts



		3	2" (1.75"), 3" (2.75"), 4" (3.75")	1/2"	1 7/8"	0.5"	—	—	Zinc	Solid	One Set Screw	0000000	000000


		3	2" (1.75"), 3" (2.75"), 4" (3.75")	5/8"	1 7/8"	0.5"	3/16"	3/32"	Zinc	Solid	One Set Screw	0000000	00000
		3	2" (1.75"), 3" (2.75"), 4" (3.75")	3/4"	1 7/8"	0.5"	3/16"	3/32"	Zinc	Solid	One Set Screw	0000000	00000
		3	3" (2.75"), 3.5" (3.25"), 4" (3.75")	1/2"	1 3/4"	0.5"	—	—	Zinc	Solid	One Set Screw	0000000	00000

V-Belt Idler Pulleys


3 Grooves

These idler 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.

	OD	For Shaft Dia.	Pitch Dia.	Wd.	Groove Dp.	Material	Body Type		Each
For 5L, B, BX Belts



	3	6.3"	1/2"	5.18"	2 7/16"	0.55"	Nylon	Solid	00000000	0000000