80 Teeth Sprockets | McMaster-Carr

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Number of Teeth

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Shaft Diameter

Roller Chain Trade Number

Component

Shaft Type

Material

Gear Module

Pitch

Bore Type

Overall Width

Gear Pitch Diameter

Hub Diameter

Face Width

Pressure Angle

Gear Type

Width

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

RoHS

REACH

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Speed Ratio

46 Products

Sprockets

Finished Bore

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.

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

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







				Steel

				40	ANSI	1/2"	80	13"	Finished	3/4"	3/16"	3/32"	2737T584	0000000


				40	ANSI	1/2"	80	13"	Finished	7/8"	3/16"	3/32"	2737T585	000000
				40	ANSI	1/2"	80	13"	Finished	1"	1/4"	1/8"	2737T586	000000
				40	ANSI	1/2"	80	13"	Finished	1 1/4"	1/4"	1/8"	2737T587	000000
				40	ANSI	1/2"	80	13"	Finished	1 3/8"	5/16"	5/32"	2737T588	000000
				40	ANSI	1/2"	80	13"	Finished	1 1/2"	3/8"	3/16"	2737T589	000000
				41	ANSI	1/2"	80	13"	Finished	3/4"	3/16"	3/32"	2737T748	000000
				41	ANSI	1/2"	80	13"	Finished	1"	1/4"	1/8"	2737T751	000000
				41	ANSI	1/2"	80	13"	Finished	1 1/4"	1/4"	1/8"	2737T752	000000
				41	ANSI	1/2"	80	13"	Finished	1 1/2"	3/8"	3/16"	2737T754	000000

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


20° Pressure Angle	14 1/2° Pressure Angle, Round Bore

20° Pressure Angle—The current industry standard, these 20° pressure angle spur gears have thicker, stronger teeth than 14½° pressure angle gears.

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

Acetal—Acetal gears absorb less water than nylon gears, so they’re less likely to swell.

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

							Hub
	Gear Pitch	Gear Module	No. of Teeth	Gear Pitch Dia.	OD	Face Wd.	Dia.	Wd.	Bore Type	For Shaft Dia.	Color		Each
20° Pressure Angle







				Acetal

				—	0.5	80	40 mm	41 mm	3 mm	14 mm	5 mm	Round Bore	6 mm	White	2662N321	00000


				—	0.8	80	64 mm	65.6 mm	4 mm	15.5 mm	6 mm	Round Bore	6 mm	White	2662N37	0000
				—	1	80	80 mm	82 mm	6 mm	18 mm	8 mm	Round Bore	8 mm	White	2662N349	00000




						Nylon

						—	1	80	80 mm	82 mm	10 mm	40 mm	10 mm	Round Bore	10 mm	Blue	2662N439	00000


						—	1.5	80	120 mm	123 mm	15 mm	55 mm	10 mm	Round Bore	12 mm	Blue	2662N409	000000


						14 1/2° Pressure Angle







										Nylon

										48	—	80	1.667"	1.7"	1/8"	0.625"	0.25"	Round Bore	1/4"	White	57655K29	00000

Gear Racks

20° Pressure Angle—Rectangular

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.

Acetal—Acetal gear racks absorb less water than nylon racks, so they’re less likely to swell.

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.

	Pitch Ht.	Ht.	Face Wd.	Fabrication	Color		Each
20° Pressure Angle—Rectangular







	Acetal

	—	0.5	250 mm	5.9 mm	6.3 mm	4 mm	Molded	Gray	2662N55	00000


	—	0.8	250 mm	6.4 mm	7.3 mm	5 mm	Molded	Gray	2662N56	0000
	—	1	315 mm	7.9 mm	10 mm	10 mm	Molded	Gray	2662N57	0000
	—	1	500 mm	11 mm	12 mm	10 mm	Machined	White	2662N63	000000
	—	1.5	500 mm	18.5 mm	20 mm	15 mm	Machined	White	2662N62	000000




			Nylon

			—	1	500 mm	11 mm	12 mm	10 mm	Machined	Blue	2662N67	000000


			14 1/2° Pressure Angle—Rectangular







							Nylon

							48	—	1 ft.	0.109"	1/8"	1/8"	Molded	White	57655K61	00000

Metal Spur Gears

Our strongest spur gears for transferring motion. They’re better than plastic gears for high-load, high-speed, and heavy duty applications. Combine a gear and rack to convert rotary motion into linear motion. To minimize your footprint, mount one or more standard gears inside of an internal gear.

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


20° Pressure Angle Round Bore	Gear with Round Bore and Set Screw

20° Pressure Angle—The current industry standard, these 20° pressure angle spur gears have thicker, stronger teeth than 14½° pressure angle gears.

Steel—Steel gears have hard, strong, and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.

Stainless Steel—Stainless steel gears resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning.

							Hub
	Gear Pitch	Gear Module	No. of Teeth	Gear Pitch Dia.	OD	Face Wd.	Dia.	Wd.	Bore Type	For Shaft Dia.	Tooth Heat Treatment	Material		Each
20° Pressure Angle







				Steel

				16	—	80	5"	5.13"	3/4"	3.88"	0.75"	Round Bore	3/4"	Not Hardened	1117 Carbon Steel	5172T25	0000000


				—	0.8	80	64 mm	65.6 mm	8 mm	28 mm	8 mm	Round Bore with Set Screw	6 mm	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N347	00000
				—	1.5	80	120 mm	123 mm	15 mm	60 mm	10 mm	Round Bore	15 mm	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N388	00000




						Stainless Steel

						—	1	80	80 mm	82 mm	10 mm	60 mm	10 mm	Round Bore	10 mm	Not Hardened	303 Stainless Steel	2664N562	000000

Gear Racks


20° Pressure Angle—Rectangular	20° Pressure Angle—Round

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.

Steel—Steel gear racks have strong and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.

Stainless Steel—Stainless steel gear racks resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning.

Hardened—Gear racks with hardened teeth have better wear resistance than racks with teeth that are not hardened.

	Pitch Ht.	Ht.	Face Wd.	Dia., mm	Tooth Heat Treatment	Material	Features		Each
20° Pressure Angle—Rectangular







	Steel

	16	—	2 ft.	0.687"	3/4"	3/4"	—	Not Hardened	1018 Low-Carbon Steel	—	5174T2	000000


	16	—	4 ft.	0.687"	3/4"	3/4"	—	Not Hardened	1215 Carbon Steel	—	5174T12	00000
	16	—	6 ft.	0.687"	3/4"	3/4"	—	Not Hardened	1215 Carbon Steel	—	5174T22	000000
	—	0.8	100 mm	11.5 mm	12.3 mm	8 mm	—	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N214	00000
	—	1.5	100 mm	18.5 mm	20 mm	15 mm	—	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N243	00000
	—	1.5	300 mm	18.5 mm	20 mm	15 mm	—	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N216	00000
	—	1.5	500 mm	13.3 mm	14.8 mm	15 mm	—	Not Hardened	1045 Carbon Steel	—	2485N203	000000
	—	1.5	1,000 mm	13.3 mm	14.8 mm	15 mm	—	Not Hardened	1045 Carbon Steel	—	2485N204	000000
	—	1.5	1,000 mm	13.5 mm	15 mm	15 mm	—	Not Hardened	Black-Oxide 1045 Carbon Steel	Machined Ends	2485N222	000000




			Stainless Steel

			—	1	500 mm	11 mm	12 mm	10 mm	—	Hardened	304 Stainless Steel	—	2485N232	000000


			20° Pressure Angle—Round







							Steel

							—	1.5	500 mm	13.5 mm	—	—	15	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N225	000000

Internal Gears

Image of Product. Front orientation. Internal Spur Gears. Metal Spur Gears.

Save space without losing power. Insert a standard spur gear inside one of these gears for a compact assembly that smoothly transmits 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.

Steel—Steel gears have strong and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.

	OD, mm	ID, mm	Face Wd., mm	Tooth Heat Treatment	Finished Material		Each
20° Pressure Angle







	Steel

	1.5	100	150	190	147	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2696N22	0000000

Metal Ratchet Gears and Pawls

Gears and

Pawls (Sold

Separately)

Gears

Compared to nylon gears, these metal ratchet gears are better for high-load, high-speed, and heavy duty applications. Used to prevent unwanted motion in jacks, tie downs, clutches, and winches, ratchet gears have sloped teeth that allow motion in one direction and prevent it in the other.

Hardened—Gears with hardened teeth are more wear resistant than gears with teeth that are not hardened.

									Hub, mm
	Face Wd., mm	No. of Teeth	OD, mm	For Shaft Dia., mm	Mounting Distance, mm	Material	Tooth Heat Treatment	Overall Wd., mm	Dia.	Wd.		Each
Round Bore



		6	80	53.3	12	39.5	1045 Carbon Steel	Hardened	16	35	10	6283K63	000000


		12	80	80	15	54.7	1045 Carbon Steel	Hardened	12	—	—	6283K68	00000
		12	80	80	15	54.7	1045 Carbon Steel	Hardened	24	50	12	6283K96	00000

Metal Worms and Worm Gears

Worm and

Gear Sold

Separately

Worm gears use screw threads to make large reductions to shaft speed while transmitting motion at a right angle. They transmit motion from worm to gear and cannot be reversed. For gears and worms to mesh correctly, they must have the same pressure angle, pitch/module, number of thread starts, and thread direction. These worms are compatible with plastic worm gears.

Gears

Cast Iron—Cast iron gears are strong and durable.

Speed Ratio—Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.

											Hub
	Gear Module	Speed Ratio	No. of Teeth	Pressure Angle	Gear Pitch Dia., mm	For No. of Thread Starts	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Dia., mm	Wd., mm	Material	For Thread Direction	Tooth Heat Treatment	Tooth Mechanical Finish		Each
Round Bore—Cast Iron



		1	80:1	80	20°	80	1	83	10	20	10	35	10	Cast Iron	Right Hand	Not Hardened	Unfinished	57545K788	000000

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.

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.

	Bore Type	For Shaft Dia., mm	Pitch Dia., mm	Hub Type		Each
For MXL Trade Size







	Corrosion-Resistant Aluminum

	6	0.080"	80	Finished	8	51.7	Standard	1375K162	000000


	9	0.080"	80	Finished	8	51.7	Standard	1375K163	00000

Precision High-Torque GT Timing Belt Pulleys

Finished Bore

When precise synchronization is crucial, these pulleys minimize play (backlash). They’re often found in 3D printers, where accurate positioning is essential. Their curved teeth fit snugly with matching belts. Compared to pulleys with standard trapezoidal teeth, these pulleys transmit about three times more torque and run at higher speeds. All are compatible with Gates PowerGrip GT, 2GT, GT2, GT3, and GT4 series.

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.

	Bore Type	For Shaft Dia.	Pitch Dia., mm	Hub Type		Each
For 3MGT Trade Size







	Corrosion-Resistant Aluminum

	9	3	80	Finished	5/16"	76.4	Standard	3764N148	000000