Sprockets for 40mm Shaft Diameter

Sprocket teeth mesh with your roller chain to smoothly transmit power. These U.S.-made sprockets have machined teeth for a more precise fit than flame-cut or punched teeth, allowing them to glide in and out of the chain to reduce wear and extend chain life.

Steel—Steel is strong, but best for dry environments since moisture will cause it to rust.

Plain Bore—Plain bore sprockets give you options—machine a custom bore, weld, or press-fit them in place. They're sized to the minimum shaft diameter listed and are machinable up to the maximum.

	For Roller Chain
	Trade No.	Std.	Pitch	No. of Teeth	OD, mm	Bore Type	For Shaft Dia.		Each
For Single Strand







				Steel

				06B	ISO	3/8"	32	103	Plain	14 mm to 40 mm	2302K201	000000


				08B	ISO	1/2"	19	84	Plain	12 mm to 40 mm	2302K25	00000


				For Double Strand







								Steel

								06B-2	ISO	3/8"	25	82	Plain	12 mm to 40 mm	3571N114	000000


								08B-2	ISO	1/2"	20	89	Plain	14 mm to 40 mm	3571N144	000000

GT Timing Belt Idler Pulleys

Toothed

Get pitch-perfect compatibility with these free-spinning pulleys. They mesh with belts that have curved GT-profile teeth, reducing vibration and wear. As they rotate on their bearings, these pulleys press up against belts to reduce slack and keep the system moving smoothly. All are compatible with GatesPowerGrip GT, 2GT, GT2, GT3, and GT4 series. Idler pulleys are often used with belt tensioners.

Iron—Strong, but best for dry environments since moisture will cause them to rust.

						Toothed
	For Max. Belt Wd., mm	Pitch, mm	For Shaft Dia., mm	OD, mm	Bearing Type	No. of Teeth		Each
For 14MGT Trade Size







				Iron

				37	14	40	146	Roller	30	7769N31	0000000

Taper-Lock Bushings

Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing trade number. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.

			Keyway, mm
	For Shaft Dia., mm	Overall Wd., mm	Wd.	Dp.	Taper	Fastener Tightening Torque, in·lbf	Includes		Each
Steel







				Bushing Trade Number 2012

				40	32	12	3.3	8°	280	Set Screws	57095K558	000000




						Bushing Trade Number 2517

						40	44	12	3.3	8°	430	Set Screws	57095K586	00000




								Bushing Trade Number 3020

								40	51	12	3.3	8°	800	Set Screws	57095K357	00000

Quick-Disconnect (QD) Bushings


Clamp-On Shaft Mount

The screw connections on these bushings easily mate to compatible quick-disconnect sprockets and pulleys. Bushings fit quick-disconnect (QD) sprockets and pulleys of the same bushing trade number. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

		Keyway, mm
	Overall Wd., mm	Wd.	Dp.	Fastener Tightening Torque, in·lbf	Material	Includes	For Shaft Dia., mm		Each
Clamp-On Shaft Mount







				Bushing Trade Number SD

				46	12	3.3	108	Sintered Steel	Clamping Screws	40	2344K38	000000




						Bushing Trade Number SDS

						35	12	3.3	108	Sintered Steel	Clamping Screws	40	2344K28	00000




								Bushing Trade Number SF

								52	12	3.3	360	Sintered Steel	Clamping Screws	40	2344K64	00000




										Bushing Trade Number SK

										49	12	3.3	180	Sintered Steel	Clamping Screws	40	2344K48	00000

Split-Tapered Bushings

Cast Iron

The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing trade number. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

Machine Key—Bushings with a machine key fit into a matching keyway on a sprocket or pulley for high-torque applications.

			Keyway, mm
	For Shaft Dia., mm	Overall Wd.	Wd.	Dp.	Taper	Fastener Tightening Torque, in·lbf		Each
Cast Iron







				Bushing Trade Number Q1 with Clamping Screws, Machine Key

				40	2 1/2"	12	3	3°	348	9859T765	000000

Corrosion-Resistant Flush-Mount Screw-Clamp Bushings

Insert these nickel-plated steel bushings into the bore of your sprocket for flush or recessed mounting in wet environments. When you tighten the included clamping screws on these bushings, their inner sleeve contracts onto the shaft and their outer sleeve expands to hold your sprocket, pulley, or gear. This keeps bushings from slipping during sudden starts and stops.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Nickel-Plated Steel



	40	65	26	9,450	150	Clamping Screws	5515N14	0000000

Flanged Screw-Clamp Bushings

A mounting flange prevents movement during tightening. These bushings are good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Steel



	40	62	38	8,550	150	Clamping Screws	1058K84	0000000

Flush-Mount Screw-Clamp Bushings

Insert these bushings into the bore of your sprocket for flush or recessed mounting. They handle shock loads. When you tighten the included clamping screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Steel



	40	75	54	25,500	363	Clamping Screws	1070N15	0000000

Quick-Grip Flanged Hydraulic Bushings

Tighten just one set screw to clamp these bushings evenly around your shaft. The screw forces hydraulic fluid in between the double-walled sleeve, expanding the two walls against the shaft and the hub of your sprocket, pulley, or gear for a tight hold. Since you don’t have to tighten multiple screw clamps individually, these bushings are quick to adjust and more likely to stay aligned on your shaft. They’re also good for shock loads. A mounting flange prevents movement during tightening. Use a hex key to tighten.

Note: To avoid deforming the sleeve walls, make sure to fully tighten the screw.

17-4 PH Stainless Steel—17-4 PH stainless steel bushings have excellent corrosion resistance in most environments.

				Set Screw
	For Shaft Dia., mm	OD, mm	Overall Wd., mm	Hole Dia.	Thread Size	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf		Each
Steel



		40	86	75	5/8"	M16	9,700	180	7636N21	0000000


		17-4 PH Stainless Steel



				40	86	75	5/8"	M16	9,700	180	7636N31	00000000

Corrosion-Resistant Flanged Screw-Clamp Bushings

Made from stainless steel or plated with nickel, these bushings resist corrosion. A mounting flange prevents movement during tightening. As screw-clamp bushings, they're good for shock loads. When you tighten the clamping screws, the bushing's inner sleeve tightens onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.

Nickel-Plated Steel—Nickel-plated steel bushings have good corrosion resistance in wet environments. However, the plating may begin to flake with long-term use.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Nickel-Plated Steel



	40	76	49	6,350	120	Clamping Screws	5530N28	0000000