Brass Gear Racks | McMaster-Carr

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86 Products

Metal Spur Gear Racks

20° Pressure Angle—Rectangular

Ideal for heavy duty applications, 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.

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

Brass—Brass gear racks are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.

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







	Brass

	64	—	2 ft.	0.11"	1/8"	1/8"	Brass	0000000	0000000


	48	—	2 ft.	0.104"	1/8"	1/8"	Brass	0000000	000000
	32	—	2 ft.	0.156"	3/16"	3/16"	Brass	0000000	000000
	24	—	2 ft.	0.208"	1/4"	1/4"	Brass	0000000	000000
	—	0.5	300 mm	8.5 mm	9 mm	3 mm	Brass	00000000	00000
	—	0.8	300 mm	9.2 mm	10 mm	4 mm	Brass	00000000	00000
	—	1	300 mm	9 mm	10 mm	6 mm	Brass	00000000	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	Gear with Keyed 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.

Brass—Brass gears are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.

							Hub				Keyway, mm
	Gear Pitch	Gear Module	No. of Teeth	Gear Pitch Dia.	OD	Face Wd.	Dia.	Wd.	Bore Type	For Shaft Dia.	Wd.	Dp.	Material		Each
20° Pressure Angle







				Brass

				64	—	16	1/4"	0.28"	1/8"	0.19"	0.19"	Round Bore	1/8"	—	—	Brass	0000000	000000


				64	—	24	3/8"	0.41"	1/8"	0.28"	0.19"	Round Bore	1/8"	—	—	Brass	0000000	00000
				64	—	28	0.438"	0.47"	1/8"	0.34"	0.19"	Round Bore	1/8"	—	—	Brass	0000000	00000
				48	—	12	1/4"	0.29"	1/8"	0.18"	0.19"	Round Bore	1/8"	—	—	Brass	0000000	00000
				48	—	15	0.312"	0.35"	1/8"	0.22"	0.19"	Round Bore	1/8"	—	—	Brass	0000000	00000
				48	—	18	3/8"	0.42"	1/8"	0.28"	0.19"	Round Bore	1/8"	—	—	Brass	0000000	00000
				48	—	24	1/2"	0.54"	1/8"	0.38"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				48	—	36	3/4"	0.79"	1/8"	0.5"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				48	—	48	1"	1.04"	1/8"	0.63"	0.25"	Round Bore	1/4"	—	—	Brass	0000000	00000
				32	—	12	3/8"	0.44"	3/16"	0.28"	0.25"	Round Bore	1/8"	—	—	Brass	0000000	00000
				32	—	14	0.438"	0.5"	3/16"	0.34"	0.25"	Round Bore	1/8"	—	—	Brass	0000000	00000


				32	—	16	1/2"	0.56"	3/16"	0.4"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				32	—	20	5/8"	0.69"	3/16"	0.47"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				32	—	24	3/4"	0.81"	3/16"	0.53"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				32	—	28	7/8"	0.94"	3/16"	0.59"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				32	—	36	1 1/8"	1.19"	3/16"	0.72"	0.25"	Round Bore	1/4"	—	—	Brass	0000000	00000
				32	—	40	1 1/4"	1.31"	3/16"	0.72"	0.25"	Round Bore	1/4"	—	—	Brass	0000000	00000
				32	—	48	1 1/2"	1.56"	3/16"	0.78"	0.25"	Round Bore	1/4"	—	—	Brass	0000000	00000
				24	—	12	1/2"	0.58"	1/4"	0.38"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				24	—	15	5/8"	0.71"	1/4"	0.5"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				24	—	18	3/4"	0.83"	1/4"	0.54"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000


				24	—	21	7/8"	0.96"	1/4"	0.6"	0.25"	Round Bore	3/16"	—	—	Brass	0000000	00000
				24	—	36	1 1/2"	1.58"	1/4"	0.79"	0.25"	Round Bore	1/4"	—	—	Brass	0000000	00000
				24	—	48	2"	2.08"	1/4"	0.92"	0.31"	Round Bore	5/16"	—	—	Brass	0000000	00000
				—	0.5	15	7.5 mm	8.5 mm	3 mm	8.5 mm	11 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	16	8 mm	9 mm	3 mm	9 mm	11 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	17	8.5 mm	9.5 mm	3 mm	9.5 mm	11 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	20	10 mm	11 mm	3 mm	8.5 mm	7 mm	Round Bore	4 mm	—	—	Brass	00000000	00000
				—	0.5	20	10 mm	11 mm	3 mm	11 mm	11 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	21	10.5 mm	11.5 mm	3 mm	11.5 mm	11 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	22	11 mm	12 mm	3 mm	9 mm	7 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000


				—	0.5	24	12 mm	13 mm	3 mm	10 mm	7 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	24	12 mm	13 mm	3 mm	10 mm	7 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
				—	0.5	25	12.5 mm	13 mm	3 mm	10 mm	7 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	25	12.5 mm	13.5 mm	3 mm	11 mm	7 mm	Round Bore	4 mm	—	—	Brass	00000000	00000
				—	0.5	30	15 mm	16 mm	3 mm	12 mm	7 mm	Round Bore with Set Screw	3 mm	—	—	Brass	00000000	00000
				—	0.5	30	15 mm	16 mm	3 mm	12 mm	7 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
				—	0.5	30	15 mm	16 mm	3 mm	13 mm	7 mm	Round Bore	4 mm	—	—	Brass	00000000	00000
				—	0.5	36	18 mm	19 mm	3 mm	16 mm	7 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
				—	0.5	40	20 mm	21 mm	3 mm	18 mm	7 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
				—	0.5	50	25 mm	26 mm	3 mm	22 mm	7 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000


				—	0.5	70	35 mm	36 mm	3 mm	28 mm	7 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
				—	0.8	17	13.6 mm	15.2 mm	4 mm	10 mm	8 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
				—	0.8	18	14.4 mm	16 mm	4 mm	10 mm	8 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
				—	0.8	20	16 mm	17.6 mm	4 mm	13 mm	8 mm	Round Bore	5 mm	—	—	Brass	00000000	00000
—				0.8	21	16.8 mm	18.4 mm	4 mm	14 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	0.8			23	18.4 mm	20 mm	4 mm	15 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	0.8			24	19.2 mm	20.8 mm	4 mm	16 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	0.8			25	20 mm	21.6 mm	4 mm	16 mm	8 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
—	0.8			26	20.8 mm	22.4 mm	4 mm	18 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	0.8	30		24 mm	25.6 mm	4 mm	20 mm	8 mm	Round Bore with Set Screw	4 mm	—	—	Brass	00000000	00000
—	0.8	30	24 mm	25.6 mm	4 mm	20 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	0.8	32	25.6 mm	27.2 mm	4 mm	22 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	0.8	36	28.8 mm	30.4 mm	4 mm	25 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	0.8	40	32 mm	33.6 mm	4 mm	28 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	0.8	50	40 mm	41.6 mm	4 mm	28 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	0.8	60	48 mm	49.6 mm	4 mm	28 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	1	16	16 mm	18 mm	6 mm	12 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	1	17	17 mm	19 mm	6 mm	14 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	18	18 mm	20 mm	6 mm	15 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	19	19 mm	21 mm	6 mm	16 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	20	20 mm	22 mm	6 mm	16 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	21	21 mm	23 mm	6 mm	18 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	23	23 mm	25 mm	6 mm	20 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	24	24 mm	26 mm	6 mm	20 mm	8 mm	Round Bore with Set Screw	8 mm	—	—	Brass	00000000	00000
—	1	30	30 mm	32 mm	6 mm	25 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	1	30	30 mm	32 mm	6 mm	25 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	32	32 mm	34 mm	6 mm	28 mm	8 mm	Round Bore with Set Screw	5 mm	—	—	Brass	00000000	00000
—	1	32	32 mm	34 mm	6 mm	28 mm	8 mm	Round Bore with Set Screw	8 mm	—	—	Brass	00000000	00000
—	1	32	32 mm	34 mm	6 mm	28 mm	8 mm	Keyed Bore with Set Screw	10 mm	4	1.8	Brass	00000000	00000
—	1	36	36 mm	38 mm	6 mm	28 mm	8 mm	Round Bore with Set Screw	8 mm	—	—	Brass	00000000	00000
—	1	40	40 mm	42 mm	6 mm	28 mm	8 mm	Round Bore with Set Screw	6 mm	—	—	Brass	00000000	00000
—	1	40	40 mm	42 mm	6 mm	28 mm	8 mm	Round Bore with Set Screw	8 mm	—	—	Brass	00000000	00000
—	1	40	40 mm	42 mm	6 mm	28 mm	8 mm	Keyed Bore with Set Screw	10 mm	4	1.8	Brass	00000000	00000
—	1	50	50 mm	52 mm	6 mm	28 mm	8 mm	Round Bore with Set Screw	8 mm	—	—	Brass	00000000	00000

Gear Racks

20° 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.

Brass—Brass gear racks are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.

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







	Brass

	64	—	2 ft.	0.11"	1/8"	1/8"	Brass	0000000	0000000


	48	—	2 ft.	0.104"	1/8"	1/8"	Brass	0000000	000000
	32	—	2 ft.	0.156"	3/16"	3/16"	Brass	0000000	000000
	24	—	2 ft.	0.208"	1/4"	1/4"	Brass	0000000	000000
	—	0.5	300 mm	8.5 mm	9 mm	3 mm	Brass	00000000	00000
	—	0.8	300 mm	9.2 mm	10 mm	4 mm	Brass	00000000	00000
	—	1	300 mm	9 mm	10 mm	6 mm	Brass	00000000	00000

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.

Brass—Brass gears are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.

	OD	ID	Face Wd.	Finished Material		Each
20° Pressure Angle







	Brass

	32	64	2"	2.75"	1.961"	3/16"	Brass	000000	0000000


	32	96	3"	3.75"	2.961"	3/16"	Brass	000000	000000
	32	128	4"	4.75"	3.961"	3/16"	Brass	000000	000000
	24	72	3"	3.75"	2.95"	1/4"	Brass	000000	000000

Metal Internal 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. These gears have teeth with a 20° pressure angle, the current industry standard. 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears.

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.

Brass—Brass gears are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.

	OD	ID	Face Wd.	Material		Each
20° Pressure Angle







	Brass

	32	64	2"	2.75"	1.961"	3/16"	Brass	000000	0000000


	32	96	3"	3.75"	2.961"	3/16"	Brass	000000	000000
	32	128	4"	4.75"	3.961"	3/16"	Brass	000000	000000
	24	72	3"	3.75"	2.95"	1/4"	Brass	000000	000000