11 Teeth Sprockets | McMaster-Carr

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EAR99

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117 Products

Sprockets

For Single Strand

For Double Strand

For Triple Strand

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.

Wear-Resistant Steel with Hardened Teeth—These sprockets have teeth that are hardened from the tip to the base so they withstand chain contact and wear evenly. That means fewer broken teeth and a longer lifespan than sprockets with unhardened or tip-hardened teeth. Steel is best for dry environments since moisture will cause it to rust.

Corrosion-Resistant 18-8 Stainless Steel—Won't corrode from frequent washdowns and mild chemicals, including ammonia often found in cleaning solutions.

Finished Bore—Mount these sprockets onto your shaft and secure with a set screw—no machining required.

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							Keyway
	Trade No.	Std.	Pitch	No. of Teeth	OD	Bore Type	For Shaft Dia.	Wd.	Dp.		Each
For Single Strand







				Steel

				25	ANSI	1/4"	11	1"	Finished	1/4"	—	—	2737T3	000000


				25	ANSI	1/4"	11	1"	Finished	3/8"	3/32"	3/64"	2737T401	000000
				25	ANSI	1/4"	11	1"	Plain	1/4" to 5/16"	—	—	6793K3	00000
				35	ANSI	3/8"	11	1 1/2"	Finished	3/8"	—	—	6280K331	00000
				35	ANSI	3/8"	11	1 1/2"	Finished	1/2"	—	—	6280K332	00000
				35	ANSI	3/8"	11	1 1/2"	Finished	5/8"	3/16"	3/32"	6280K333	00000
				35	ANSI	3/8"	11	1 1/2"	Finished	3/4"	3/16"	3/32"	6280K334	00000
				35	ANSI	3/8"	11	1 1/2"	Plain	3/8" to 9/16"	—	—	6793K118	00000
				40	ANSI	1/2"	11	2"	Finished	1/2"	—	—	6280K651	00000
				40	ANSI	1/2"	11	2"	Finished	5/8"	3/16"	3/32"	6280K652	00000
				40	ANSI	1/2"	11	2"	Finished	3/4"	3/16"	3/32"	6280K653	00000


				40	ANSI	1/2"	11	2"	Finished	7/8"	3/16"	3/32"	6280K654	00000
				40	ANSI	1/2"	11	2"	Finished	1"	1/4"	1/8"	2737T412	000000
				40	ANSI	1/2"	11	2"	Plain	1/2" to 7/8"	—	—	6793K142	00000
				41	ANSI	1/2"	11	2"	Finished	1/2"	—	—	6280K491	00000
				41	ANSI	1/2"	11	2"	Finished	5/8"	3/16"	3/32"	6280K492	00000
				41	ANSI	1/2"	11	2"	Finished	3/4"	3/16"	3/32"	6280K493	00000
				41	ANSI	1/2"	11	2"	Finished	7/8"	3/16"	3/32"	6280K447	00000
				50	ANSI	5/8"	11	2 1/2"	Finished	5/8"	3/16"	3/32"	6280K881	00000
				50	ANSI	5/8"	11	2 1/2"	Finished	3/4"	3/16"	3/32"	6280K882	00000
				50	ANSI	5/8"	11	2 1/2"	Finished	7/8"	3/16"	3/32"	6280K883	00000


				50	ANSI	5/8"	11	2 1/2"	Finished	1"	1/4"	1/8"	6280K884	00000
				50	ANSI	5/8"	11	2 1/2"	Finished	1 1/8"	1/4"	1/8"	2737T417	000000
				50	ANSI	5/8"	11	2 1/2"	Plain	5/8" to 1"	—	—	6793K165	00000
				60	ANSI	3/4"	11	3"	Finished	3/4"	3/16"	3/32"	6280K167	00000
				60	ANSI	3/4"	11	3"	Finished	7/8"	3/16"	3/32"	6280K137	00000
				60	ANSI	3/4"	11	3"	Finished	1"	1/4"	1/8"	6280K168	00000
				60	ANSI	3/4"	11	3"	Finished	1 1/8"	1/4"	1/8"	6280K169	00000
				60	ANSI	3/4"	11	3"	Finished	1 3/16"	1/4"	1/8"	6280K138	00000
				60	ANSI	3/4"	11	3"	Finished	1 1/4"	1/4"	1/8"	6280K139	00000
				60	ANSI	3/4"	11	3"	Plain	3/4" to 1 5/16"	—	—	6793K213	00000


				80	ANSI	1"	11	4"	Finished	1"	1/4"	1/8"	6280K272	00000
				80	ANSI	1"	11	4"	Finished	1 1/8"	1/4"	1/8"	6280K526	00000
				80	ANSI	1"	11	4"	Finished	1 3/16"	1/4"	1/8"	6280K273	00000
				80	ANSI	1"	11	4"	Finished	1 1/4"	1/4"	1/8"	6280K527	00000
				80	ANSI	1"	11	4"	Finished	1 3/8"	5/16"	5/32"	6280K274	00000
				80	ANSI	1"	11	4"	Finished	1 7/16"	3/8"	3/16"	6280K528	00000
				80	ANSI	1"	11	4"	Finished	1 1/2"	3/8"	3/16"	6280K275	00000
				80	ANSI	1"	11	4"	Finished	1 5/8"	3/8"	3/16"	6280K529	00000
				80	ANSI	1"	11	4"	Plain	1" to 1 5/8"	—	—	6793K33	00000
				100	ANSI	1 1/4"	11	5"	Finished	1"	1/4"	1/8"	2741T231	000000


				100	ANSI	1 1/4"	11	5"	Finished	1 1/4"	1/4"	1/8"	2741T233	000000
				100	ANSI	1 1/4"	11	5"	Finished	1 3/8"	5/16"	5/32"	2741T161	000000
				100	ANSI	1 1/4"	11	5"	Finished	1 1/2"	3/8"	3/16"	2741T162	000000
				100	ANSI	1 1/4"	11	5"	Finished	1 3/4"	3/8"	3/16"	2741T164	000000
100				ANSI	1 1/4"	11	5"	Finished	2"	1/2"	1/4"	2741T236	000000
100	ANSI			1 1/4"	11	5"	Plain	1" to 2 1/4"	—	—	6793K46	000000
120	ANSI			1 1/2"	11	6"	Plain	1 3/8" to 2 3/8"	—	—	6793K59	000000
140	ANSI			1 3/4"	11	7"	Plain	1 1/2" to 2 3/4"	—	—	6793K401	000000
160	ANSI			2"	11	8"	Plain	1 1/2" to 3 1/4"	—	—	6793K413	000000
04B	ISO	6 mm		11	24 mm	Plain	6 mm to 8 mm	—	—	2302K71	00000
05B	ISO	8 mm	11	32 mm	Plain	8 mm to 11 mm	—	—	2302K83	00000
06B	ISO	3/8"	11	37 mm	Plain	8 mm to 14 mm	—	—	2302K95	00000
08B	ISO	1/2"	11	51 mm	Plain	10 mm to 22 mm	—	—	2302K106	00000
10B	ISO	5/8"	11	66 mm	Plain	12 mm to 25 mm	—	—	2302K252	00000
12B	ISO	3/4"	11	79 mm	Plain	12 mm to 32 mm	—	—	2302K317	00000



		Wear-Resistant Steel with Hardened Teeth

		35	ANSI	3/8"	11	1 1/2"	Finished	3/8"	—	—	2500T131	00000


		35	ANSI	3/8"	11	1 1/2"	Finished	1/2"	—	—	2500T132	00000
		35	ANSI	3/8"	11	1 1/2"	Finished	5/8"	3/16"	3/32"	2500T133	00000
		35	ANSI	3/8"	11	1 1/2"	Finished	3/4"	3/16"	3/32"	2500T134	00000
		40	ANSI	1/2"	11	2"	Finished	1/2"	—	—	2500T431	00000
		40	ANSI	1/2"	11	2"	Finished	5/8"	3/16"	3/32"	2500T432	00000
		40	ANSI	1/2"	11	2"	Finished	3/4"	3/16"	3/32"	2500T433	00000
		40	ANSI	1/2"	11	2"	Finished	7/8"	3/16"	3/32"	2500T434	00000
		50	ANSI	5/8"	11	2 1/2"	Finished	5/8"	3/16"	3/32"	2500T651	00000
		50	ANSI	5/8"	11	2 1/2"	Finished	3/4"	3/16"	3/32"	2500T652	00000
		50	ANSI	5/8"	11	2 1/2"	Finished	7/8"	3/16"	3/32"	2500T653	00000


		50	ANSI	5/8"	11	2 1/2"	Finished	1"	1/4"	1/8"	2500T654	00000
		60	ANSI	3/4"	11	3"	Finished	3/4"	3/16"	3/32"	2500T831	00000
		60	ANSI	3/4"	11	3"	Finished	7/8"	3/16"	3/32"	2500T832	00000
		60	ANSI	3/4"	11	3"	Finished	1"	1/4"	1/8"	2500T833	00000
		60	ANSI	3/4"	11	3"	Finished	1 1/8"	1/4"	1/8"	2500T834	00000
		60	ANSI	3/4"	11	3"	Finished	1 3/16"	1/4"	1/8"	2500T835	00000
		60	ANSI	3/4"	11	3"	Finished	1 1/4"	1/4"	1/8"	2500T836	00000
		80	ANSI	1"	11	4"	Finished	1"	1/4"	1/8"	2500T961	00000
		80	ANSI	1"	11	4"	Finished	1 1/8"	1/4"	1/8"	2500T962	00000
		80	ANSI	1"	11	4"	Finished	1 3/16"	1/4"	1/8"	2500T963	00000


		80	ANSI	1"	11	4"	Finished	1 1/4"	1/4"	1/8"	2500T964	00000
		80	ANSI	1"	11	4"	Finished	1 3/8"	5/16"	5/32"	2500T965	00000
		80	ANSI	1"	11	4"	Finished	1 7/16"	3/8"	3/16"	2500T966	00000
		80	ANSI	1"	11	4"	Finished	1 1/2"	3/8"	3/16"	2500T967	00000
		80	ANSI	1"	11	4"	Finished	1 5/8"	3/8"	3/16"	2500T968	00000




				Corrosion-Resistant 18-8 Stainless Steel

				35	ANSI	3/8"	11	1 1/2"	Finished	3/8"	3/32"	3/64"	2345K131	000000


				35	ANSI	3/8"	11	1 1/2"	Finished	1/2"	1/8"	1/16"	2345K132	000000
				35	ANSI	3/8"	11	1 1/2"	Finished	5/8"	3/16"	3/32"	2345K133	000000
				40	ANSI	1/2"	11	2"	Finished	1/2"	1/8"	1/16"	2345K351	000000
				40	ANSI	1/2"	11	2"	Finished	5/8"	3/16"	3/32"	2345K352	000000
				40	ANSI	1/2"	11	2"	Finished	3/4"	3/16"	3/32"	2345K353	000000
				40	ANSI	1/2"	11	2"	Finished	7/8"	3/16"	3/32"	2345K354	000000


				For Double Strand







								Wear-Resistant Steel with Hardened Teeth

								40-2	ANSI	1/2"	11	2"	Plain	1/2" to 3/4"	—	—	2784K16	00000


50-2	ANSI							5/8"	11	2 1/2"	Plain	5/8" to 15/16"	—	—	2784K33	000000
60-2	ANSI							3/4"	11	3"	Plain	1" to 1 1/4"	—	—	2784K49	000000


For Triple Strand







										Wear-Resistant Steel with Hardened Teeth

										40-3	ANSI	1/2"	11	2"	Plain	1/2" to 3/4"	—	—	2510K25	000000


										50-3	ANSI	5/8"	11	2 1/2"	Plain	5/8" to 15/16"	—	—	2510K42	000000
										60-3	ANSI	3/4"	11	3"	Plain	1" to 1 1/4"	—	—	2510K58	000000
										80-3	ANSI	1"	11	4"	Plain	1" to 1 3/4"	—	—	2510K75	000000

Idler Sprockets

Maintain constant tension on your roller chain to reduce wear and vibration. These sprockets press against the chain to take up slack and rotate freely on bearings to keep the chain moving smoothly. They’re often paired with roller chain tensioners.

For Single Strand

Ball Bearing

Needle-Roller

Bearing

Ball Bearing—Smoother than smooth—the balls inside these bearings roll nearly friction-free to handle high speeds. All are sealed to keep lubricant in and dust out.

Needle-Roller Bearing—These bearings rotate smoothly under your heaviest loads.

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

	For Roller Chain
	Trade No.	Std.	Pitch	No. of Teeth	For Shaft Dia.	OD	Bearing Material		Each
Ball Bearing







				Steel

				100	ANSI	1 1/4"	11	3/4"	5"	Steel	6663K291	0000000


				Needle-Roller Bearing







								Wear-Resistant Steel with Hardened Teeth

								100	ANSI	1 1/4"	11	1 1/2"	5"	Bronze	6663K207	000000


								120	ANSI	1 1/2"	11	1 1/2"	6"	Bronze	6663K208	000000
								140	ANSI	1 3/4"	11	1 1/2"	7"	Bronze	6663K209	000000

Plastic Sprockets

Quiet-running, lightweight, and naturally rust resistant. Choose these sprockets for noise-sensitive areas, designs with weight constraints, and machines that require frequent washdowns. Their teeth mesh with your roller chain to smoothly transmit power. All are made in the U.S.

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



		25	ANSI	1/4"	11	1"	Plain	1/4" to 5/16"	60425K14	000000


		35	ANSI	3/8"	11	1 1/2"	Plain	3/8" to 1/2"	60425K171	00000
		40	ANSI	1/2"	11	2"	Plain	1/2"	60425K61	00000
		50	ANSI	5/8"	11	2 1/2"	Plain	1/2" to 7/8"	60425K84	00000

Sprockets for Clog-Resistant Flat-Edge Roller Chain

Prevent jams with sprockets sized to grip our Clog-Resistant Flat-Edge Roller Chain. Their short teeth stay below the chain to avoid snagging conveyed items.

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

	OD	Bore Type	For Shaft Dia.		Each
For Single Strand







	Steel

	81X	2.609"	11	9 7/8"	Plain	1 1/4" to 3 7/16"	6321N14	0000000

Plastic Spur Gears

Made of plastic, these spur gears run more quietly than metal gears and have good corrosion and chemical resistance. However, they’re not as strong as metal gears, so they’re best for light duty applications. Combine a gear and rack to convert rotary motion into linear motion.

Combine gears with different numbers of teeth to change speed and torque in your assembly. For components to mesh correctly, they must have the same pressure angle and pitch/module.

Gears

14 1/2° Pressure

Angle,

Round/Plain Bore

14 1/2° Pressure Angle—A former industry standard, 14½° pressure angle gears are often found in older machinery.

Nylon—Nylon gears are wear resistant, but will swell and weaken over time when wet.

Plain Bore—Gears with a plain bore have a large hub diameter so you can machine them to fit your shaft.

						Hub
	Gear Pitch	No. of Teeth	Gear Pitch Dia.	OD	Face Wd.	Dia.	Wd.	Bore Type	For Shaft Dia.	Color		Each
14 1/2° Pressure Angle







				Nylon

				20	11	0.55"	0.65"	3/8"	0.406"	0.375"	Round/Plain Bore	1/4" to 5/16"	White	60455K12	000000

Gear Racks

14 1/2° Pressure

Angle—Rectangular

These racks match with spur gears to convert rotary motion to linear motion. For components to mesh correctly, they must have the same pressure angle and pitch/module.

Nylon—Nylon gear racks are wear resistant, but will swell and weaken over time when wet.

Machined—Machined gear racks may be slightly bowed but will straighten out when installed.

	Ht.	Face Wd.	Fabrication	Color		Each
14 1/2° Pressure Angle—Rectangular







	Nylon

	20	4	0.325"	3/8"	3/8"	Machined	Green	60435K88	0000000

Timing Belt Pulleys

Finished Bore

Keep your drive system in sync. Trapezoidal teeth mesh with matching belts to synchronize motion. With the original tooth profile, these pulleys handle enough torque for most applications. If you need high torque or precise starts and stops, consider curved tooth profiles, such as GT and HTD pulleys.

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

Corrosion-Resistant Aluminum—Won't rust in wet environments and one-third the weight of steel and iron. However, aluminum pulleys are not as strong as iron and steel.

Finished Bore—Mount these pulleys onto the shaft and secure with a set screw—no machining required.

Flush Hub—Ideal in tight spots where a raised hub would get in the way.

	Bore Type	For Shaft Dia.	Pitch Dia.	No. of Flanges	Hub Type		Each
For MXL Trade Size







	Corrosion-Resistant Aluminum

	1/8"	0.080"	11	Finished	1/8"	0.28"	1	Standard	1375K12	000000


	1/4"	0.080"	11	Finished	1/8"	0.28"	1	Standard	1375K31	00000
	3 mm	0.080"	11	Finished	3 mm	7.1 mm	1	Standard	1375K172	00000


	For XL Trade Size







					Steel

					3/8"	0.200"	11	Finished	3/16"	0.7"	2	Standard	6495K712	00000




							Corrosion-Resistant Aluminum

							3/8"	0.200"	11	Finished	3/16"	0.7"	2	Standard	1277N42	00000


							3/8"	0.200"	11	Finished	1/4"	0.7"	2	Flush	1277N737	00000
							3/8"	0.200"	11	Finished	6 mm	0.7"	2	Flush	1277N776	00000
							3/8"	0.200"	11	Finished	6 mm	0.7"	2	Standard	1277N712	00000

Plastic Timing Belt Pulleys

Naturally rust resistant and lightweight, these plastic pulleys are ideal for machines that require frequent washdowns. Trapezoidal teeth, the original tooth profile, mesh with matching belts to transmit power without slipping.

Finished Bore—Mount these pulleys onto the shaft and secure with a set screw—no machining required.

	Bore Type	For Shaft Dia.	Pitch Dia.	No. of Flanges	Hub Type		Each
For XL Trade Size







	Acetal

	3/8"	0.200"	11	Finished	3/16"	0.7"	2	Standard	57105K12	000000


	3/8"	0.200"	11	Finished	6 mm	0.7"	2	Standard	3563N12	00000