External Gears | McMaster-Carr

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399 Products

About Gears

Compare gear types, measure pitch and module, calculate mounting distance, increase speed or torque, and more.

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—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.

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

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







				Acetal

				48	—	18	3/8"	0.42"	1/8"	0.313"	0.25"	Round Bore	5/32"	—	—	White	2662N22	00000


				48	—	24	1/2"	0.54"	1/8"	0.406"	0.25"	Round Bore	5/32"	—	—	White	2662N23	0000
				48	—	36	3/4"	0.79"	1/8"	0.547"	0.25"	Round Bore	3/16"	—	—	White	2662N24	0000
				48	—	48	1"	1.04"	1/8"	0.609"	0.25"	Round Bore	1/4"	—	—	White	2662N25	0000
				48	—	60	1 1/4"	1.29"	1/8"	0.609"	0.25"	Round Bore	1/4"	—	—	White	2662N44	0000
				48	—	96	2"	2.04"	1/8"	0.609"	0.25"	Round Bore	1/4"	—	—	White	2662N26	0000
				32	—	12	3/8"	0.44"	3/16"	0.281"	0.313"	Round Bore	5/32"	—	—	White	2662N14	0000
				32	—	24	3/4"	0.81"	3/16"	0.5"	0.313"	Round Bore	3/16"	—	—	White	2662N15	0000
				32	—	32	1"	1.06"	3/16"	0.625"	0.313"	Round Bore	1/4"	—	—	White	2662N16	0000
				32	—	36	1 1/8"	1.19"	3/16"	0.609"	0.313"	Round Bore	1/4"	—	—	White	2662N17	0000
				32	—	48	1 1/2"	1.56"	3/16"	0.625"	0.313"	Round Bore	1/4"	—	—	White	2662N18	0000


				32	—	96	3"	3.06"	3/16"	0.813"	0.313"	Round Bore	5/16"	—	—	White	2662N19	0000
				24	—	12	1/2"	0.54"	1/4"	0.375"	0.313"	Round Bore	3/16"	—	—	White	2662N7	0000
				24	—	18	3/4"	0.83"	1/4"	0.547"	0.313"	Round Bore	3/16"	—	—	White	2662N8	0000
				24	—	24	1"	1.08"	1/4"	0.625"	0.313"	Round Bore	1/4"	—	—	White	2662N9	0000
				24	—	36	1 1/2"	1.58"	1/4"	0.625"	0.313"	Round Bore	1/4"	—	—	White	2662N11	0000
				24	—	48	2"	2.08"	1/4"	0.672"	0.313"	Round Bore	5/16"	—	—	White	2662N12	0000
				24	—	60	2 1/2"	2.58"	1/4"	0.672"	0.313"	Round Bore	5/16"	—	—	White	2662N13	0000
				20	—	12	0.6"	0.7"	3/8"	0.469"	0.375"	Round Bore	1/4"	—	—	White	2662N1	0000
				20	—	20	1"	1.1"	3/8"	0.734"	0.375"	Round Bore	3/8"	—	—	White	2662N2	0000
				20	—	24	1.2"	1.3"	3/8"	0.734"	0.375"	Round Bore	3/8"	—	—	White	2662N3	0000


				20	—	36	1.8"	1.9"	3/8"	0.734"	0.375"	Round Bore	3/8"	—	—	White	2662N4	00000
				20	—	40	2"	2.1"	3/8"	0.734"	0.375"	Round Bore	3/8"	—	—	White	2662N5	00000
				20	—	48	2.4"	2.5"	3/8"	0.734"	0.375"	Round Bore	3/8"	—	—	White	2662N6	00000
				—	0.5	12	6 mm	7 mm	3 mm	4.5 mm	4 mm	Round Bore	2 mm	—	—	White	2662N27	0000
				—	0.5	15	7.5 mm	8.5 mm	3 mm	4.5 mm	4 mm	Round Bore	2 mm	—	—	White	2662N311	0000
				—	0.5	16	8 mm	9 mm	3 mm	6 mm	4 mm	Round Bore	3 mm	—	—	White	2662N312	0000
				—	0.5	20	10 mm	11 mm	3 mm	8 mm	4 mm	Round Bore	4 mm	—	—	White	2662N313	0000
				—	0.5	24	12 mm	13 mm	3 mm	8 mm	4 mm	Round Bore	4 mm	—	—	White	2662N28	0000
				—	0.5	30	15 mm	16 mm	3 mm	10 mm	4 mm	Round Bore	5 mm	—	—	White	2662N314	0000
				—	0.5	36	18 mm	19 mm	3 mm	10 mm	4 mm	Round Bore	5 mm	—	—	White	2662N29	0000


				—	0.5	40	20 mm	21 mm	3 mm	12 mm	4 mm	Round Bore	5 mm	—	—	White	2662N315	0000
				—	0.5	45	22.5 mm	23.5 mm	3 mm	12 mm	4 mm	Round Bore	5 mm	—	—	White	2662N316	0000
				—	0.5	48	24 mm	25 mm	3 mm	12 mm	4 mm	Round Bore	5 mm	—	—	White	2662N31	0000
				—	0.5	50	25 mm	26 mm	3 mm	12 mm	4 mm	Round Bore	5 mm	—	—	White	2662N317	0000
				—	0.5	56	28 mm	29 mm	3 mm	14 mm	5 mm	Round Bore	6 mm	—	—	White	2662N318	0000
				—	0.5	60	30 mm	31 mm	3 mm	14 mm	5 mm	Round Bore	6 mm	—	—	White	2662N32	0000
				—	0.5	70	35 mm	36 mm	3 mm	14 mm	5 mm	Round Bore	6 mm	—	—	White	2662N319	0000
				—	0.5	80	40 mm	41 mm	3 mm	14 mm	5 mm	Round Bore	6 mm	—	—	White	2662N321	0000
				—	0.8	12	9.6 mm	11.2 mm	4 mm	6 mm	5 mm	Round Bore	3 mm	—	—	White	2662N322	0000
				—	0.8	15	12 mm	13.6 mm	4 mm	6 mm	5 mm	Round Bore	3 mm	—	—	White	2662N323	0000


				—	0.8	16	12.8 mm	14.4 mm	4 mm	8 mm	5 mm	Round Bore	4 mm	—	—	White	2662N324	0000
				—	0.8	20	16 mm	17.6 mm	4 mm	10 mm	5 mm	Round Bore	5 mm	—	—	White	2662N33	0000
				—	0.8	24	19.2 mm	20.8 mm	4 mm	10 mm	5 mm	Round Bore	5 mm	—	—	White	2662N325	0000
				—	0.8	30	24 mm	25.6 mm	4 mm	12 mm	5 mm	Round Bore	6 mm	—	—	White	2662N34	0000
—				0.8	40	32 mm	33.6 mm	4 mm	12 mm	5 mm	Round Bore	6 mm	—	—	White	2662N35	0000
—	0.8			48	38.4 mm	40 mm	4 mm	14.5 mm	6 mm	Round Bore	6 mm	—	—	White	2662N327	0000
—	0.8			60	48 mm	49.6 mm	4 mm	14.5 mm	6 mm	Round Bore	6 mm	—	—	White	2662N36	0000
—	0.8			80	64 mm	65.6 mm	4 mm	15.5 mm	6 mm	Round Bore	6 mm	—	—	White	2662N37	0000
—	1			12	12 mm	14 mm	6 mm	8 mm	6 mm	Round Bore	4 mm	—	—	White	2662N332	0000
—	1	15		15 mm	17 mm	6 mm	8 mm	6 mm	Round Bore	4 mm	—	—	White	2662N38	0000
—	1	16	16 mm	18 mm	6 mm	10 mm	6 mm	Round Bore	5 mm	—	—	White	2662N333	0000
—	1	18	18 mm	20 mm	6 mm	10 mm	6 mm	Round Bore	5 mm	—	—	White	2662N334	0000
—	1	20	20 mm	22 mm	6 mm	11.7 mm	6 mm	Round Bore	5 mm	—	—	White	2662N39	0000
—	1	24	24 mm	26 mm	6 mm	11.7 mm	6 mm	Round Bore	5 mm	—	—	White	2662N335	0000
—	1	28	28 mm	30 mm	6 mm	11.7 mm	6 mm	Round Bore	5 mm	—	—	White	2662N337	0000
—	1	30	30 mm	32 mm	6 mm	14 mm	6 mm	Round Bore	6 mm	—	—	White	2662N41	0000
—	1	32	32 mm	34 mm	6 mm	14 mm	6 mm	Round Bore	6 mm	—	—	White	2662N338	0000
—	1	35	35 mm	37 mm	6 mm	14 mm	6 mm	Round Bore	6 mm	—	—	White	2662N339	00000
—	1	36	36 mm	38 mm	6 mm	14 mm	6 mm	Round Bore	6 mm	—	—	White	2662N341	00000
—	1	40	40 mm	42 mm	6 mm	16 mm	6 mm	Round Bore	8 mm	—	—	White	2662N342	00000
—	1	45	45 mm	47 mm	6 mm	16 mm	6 mm	Round Bore	8 mm	—	—	White	2662N42	00000
—	1	48	48 mm	50 mm	6 mm	16 mm	8 mm	Round Bore	8 mm	—	—	White	2662N343	00000
—	1	50	50 mm	52 mm	6 mm	16 mm	8 mm	Round Bore	8 mm	—	—	White	2662N344	00000
—	1	60	60 mm	62 mm	6 mm	18 mm	8 mm	Round Bore	8 mm	—	—	White	2662N43	00000
—	1	64	64 mm	66 mm	6 mm	18 mm	8 mm	Round Bore	8 mm	—	—	White	2662N346	00000
—	1	70	70 mm	72 mm	6 mm	18 mm	8 mm	Round Bore	8 mm	—	—	White	2662N347	00000
—	1	80	80 mm	82 mm	6 mm	18 mm	8 mm	Round Bore	8 mm	—	—	White	2662N349	00000



		Nylon

		—	1	15	15 mm	17 mm	10 mm	12 mm	10 mm	Round Bore	6 mm	—	—	Blue	2662N415	00000


		—	1	16	16 mm	18 mm	10 mm	12 mm	10 mm	Round Bore	6 mm	—	—	Blue	2662N416	00000
		—	1	18	18 mm	20 mm	10 mm	14 mm	10 mm	Round Bore	6 mm	—	—	Blue	2662N417	00000
		—	1	20	20 mm	22 mm	10 mm	16 mm	10 mm	Round Bore	6 mm	—	—	Blue	2662N418	00000
		—	1	22	22 mm	24 mm	10 mm	18 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N419	00000
		—	1	24	24 mm	26 mm	10 mm	20 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N421	00000
		—	1	25	25 mm	27 mm	10 mm	20 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N422	00000
		—	1	26	26 mm	28 mm	10 mm	20 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N423	00000
		—	1	28	28 mm	30 mm	10 mm	22 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N424	00000
		—	1	30	30 mm	32 mm	10 mm	25 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N425	00000
		—	1	32	32 mm	34 mm	10 mm	26 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N426	00000


		—	1	40	40 mm	42 mm	10 mm	35 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N429	00000
		—	1	50	50 mm	52 mm	10 mm	35 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N433	00000
		—	1	60	60 mm	62 mm	10 mm	35 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N435	00000
		—	1	75	75 mm	77 mm	10 mm	40 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N438	00000
		—	1	80	80 mm	82 mm	10 mm	40 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N439	00000
		—	1	100	100 mm	102 mm	10 mm	40 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N414	00000
		—	1.5	15	22.5 mm	25.5 mm	15 mm	18 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N385	00000
		—	1.5	16	24 mm	27 mm	15 mm	20 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N386	00000
		—	1.5	20	30 mm	33 mm	15 mm	24 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N388	00000
		—	1.5	22	33 mm	36 mm	15 mm	26 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N389	00000


		—	1.5	30	45 mm	48 mm	15 mm	38 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N395	00000
		—	1.5	32	48 mm	51 mm	15 mm	40 mm	10 mm	Round Bore	8 mm	—	—	Blue	2662N396	00000
		—	1.5	50	75 mm	78 mm	15 mm	45 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N403	00000
		—	1.5	80	120 mm	123 mm	15 mm	55 mm	10 mm	Round Bore	12 mm	—	—	Blue	2662N409	000000
		—	1.5	100	150 mm	153 mm	15 mm	60 mm	10 mm	Round Bore	12 mm	—	—	Blue	2662N384	000000
		—	2	12	24 mm	28 mm	20 mm	18 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N444	00000
		—	2	15	30 mm	34 mm	20 mm	24 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N447	00000
		—	2	16	32 mm	36 mm	20 mm	26 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N448	00000
		—	2	18	36 mm	40 mm	20 mm	30 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N449	00000
		—	2	20	40 mm	44 mm	20 mm	32 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N451	00000


		—	2	24	48 mm	52 mm	20 mm	38 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N453	00000
		—	2	25	50 mm	54 mm	20 mm	40 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N454	00000
		—	2	28	56 mm	60 mm	20 mm	45 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N456	00000
		—	2	30	60 mm	64 mm	20 mm	50 mm	10 mm	Round Bore	10 mm	—	—	Blue	2662N457	00000


		14 1/2° Pressure Angle
		Round Bore Keyed Bore






						Nylon

						48	—	12	1/4"	0.29"	1/8"	0.188"	0.188"	Round Bore	3/32"	—	—	White	57655K11	00000


						48	—	14	0.292"	0.33"	1/8"	0.25"	0.188"	Round Bore	3/32"	—	—	White	57655K12	00000
						48	—	16	0.333"	0.37"	1/8"	0.25"	0.188"	Round Bore	1/8"	—	—	White	57655K13	00000
48						—	18	3/8"	0.41"	1/8"	0.313"	0.188"	Round Bore	1/8"	—	—	White	57655K14	00000
48	—					20	0.417"	0.45"	1/8"	0.375"	0.25"	Round Bore	1/8"	—	—	White	57655K15	00000
48	—					24	1/2"	0.54"	1/8"	0.375"	0.25"	Round Bore	1/8"	—	—	White	57655K16	00000
48	—					28	0.583"	0.62"	1/8"	0.5"	0.25"	Round Bore	1/8"	—	—	White	57655K17	00000
48	—					32	0.667"	0.7"	1/8"	0.5"	0.25"	Round Bore	1/8"	—	—	White	57655K18	00000
48	—					36	3/4"	0.79"	1/8"	0.625"	0.25"	Round Bore	3/16"	—	—	White	57655K19	00000
48	—					40	0.833"	0.87"	1/8"	0.625"	0.25"	Round Bore	3/16"	—	—	White	57655K21	00000
48	—					42	7/8"	0.91"	1/8"	0.438"	0.25"	Round Bore	1/4"	—	—	White	57655K22	00000


48	—					48	1"	1.04"	1/8"	0.625"	0.25"	Round Bore	3/16"	—	—	White	57655K24	00000
48	—					56	1.167"	1.2"	1/8"	0.625"	0.25"	Round Bore	3/16"	—	—	White	57655K25	00000
48	—					60	1 1/4"	1.29"	1/8"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K26	00000
48	—					64	1.333"	1.37"	1/8"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K27	00000
48	—					72	1 1/2"	1.54"	1/8"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K28	00000
48	—					80	1.667"	1.7"	1/8"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K29	00000
48	—					96	2"	2.04"	1/8"	1"	0.25"	Round Bore	1/4"	—	—	White	57655K31	00000
32	—					12	3/8"	0.44"	3/16"	0.25"	0.188"	Round Bore	1/8"	—	—	White	57655K32	00000
32	—					14	0.438"	0.5"	3/16"	0.313"	0.25"	Round Bore	1/8"	—	—	White	57655K33	00000
32	—					16	1/2"	0.56"	3/16"	0.375"	0.25"	Round Bore	3/16"	—	—	White	57655K34	00000


32	—					18	0.563"	0.63"	3/16"	0.375"	0.25"	Round Bore	3/16"	—	—	White	57655K35	00000
32	—					20	5/8"	0.69"	3/16"	0.5"	0.25"	Round Bore	3/16"	—	—	White	57655K36	00000
32	—					22	0.688"	0.75"	3/16"	0.563"	0.25"	Round Bore	1/4"	—	—	White	57655K37	00000
32	—					24	3/4"	0.81"	3/16"	0.625"	0.25"	Round Bore	3/16"	—	—	White	57655K38	00000
32	—					28	7/8"	0.94"	3/16"	0.625"	0.25"	Round Bore	3/16"	—	—	White	57655K41	00000
32	—					32	1"	1.06"	3/16"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K42	00000
32	—					36	1 1/8"	1.19"	3/16"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K43	00000
32	—					40	1 1/4"	1.31"	3/16"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K45	00000
32	—					48	1 1/2"	1.56"	3/16"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K47	00000
32	—					52	1 5/8"	1.69"	3/16"	0.625"	0.25"	Round Bore	1/4"	—	—	White	57655K48	00000


32	—					62	1.938"	2"	1/4"	0.625"	0.375"	Round Bore	3/8"	—	—	White	57655K49	00000
24	—					12	1/2"	0.58"	5/16"	0.375"	0.25"	Round Bore	1/4"	—	—	White	57655K51	00000
24	—					18	3/4"	0.83"	1/4"	0.5"	0.188"	Round Bore	1/4"	—	—	White	57655K52	00000
24	—					24	1"	1.08"	1/4"	0.625"	0.375"	Round Bore	1/4"	—	—	White	57655K53	00000
24	—					84	3 1/2"	3.58"	5/16"	0.844"	0.25"	Round Bore	3/8"	—	—	White	57655K54	00000
20	—					11	0.55"	0.65"	3/8"	0.406"	0.375"	Round/Plain Bore	1/4" to 5/16"	—	—	White	60455K12	00000
20	—					60	3"	3.1"	3/8"	2"	0.5"	Round/Plain Bore	3/8" to 1 1/8"	—	—	White	60455K14	00000
16	—					12	3/4"	0.88"	7/32"	0.438"	0.031"	Round Bore	1/4"	—	—	White	57655K55	00000
16	—					16	1"	1.13"	1/2"	0.812"	0.438"	Round/Plain Bore	1/4" to 1/2"	—	—	White	60455K33	00000
16	—					20	1 1/4"	1.38"	19/64"	0.875"	0.5"	Round Bore	1/2"	—	—	White	57655K56	00000


16	—					24	1 1/2"	1.63"	1/2"	1.313"	0.438"	Round/Plain Bore	1/2" to 5/8"	—	—	White	60455K36	00000
16	—					30	1 7/8"	2"	7/8"	1.625"	0.5"	Round Bore	63/64"	—	—	White	57655K57	00000
16	—					32	2"	2.13"	1/2"	1.75"	0.5"	Round/Plain Bore	1/2" to 1"	—	—	White	60455K38	00000
16	—					36	2 1/4"	2.38"	5/16"	0.75"	0.375"	Round Bore	3/8"	—	—	White	57655K58	00000
16	—	42				2 5/8"	2.75"	5/8"	1.375"	0.25"	Keyed Bore	13/32"	0.125"	0.063"	White	57655K59	00000
16	—	48	3"			3.13"	1/2"	2"	0.5"	Round/Plain Bore	1/2" to 1 1/8"	—	—	White	60455K41	000000
12	—	14	1.167"			1.33"	3/4"	0.906"	0.5"	Round/Plain Bore	1/4" to 1/2"	—	—	White	60455K43	00000
12	—	48	4"			4.17"	3/4"	2.5"	0.75"	Round/Plain Bore	1/2" to 1 3/8"	—	—	White	60455K51	000000
10	—	12	1.2"			1.4"	1"	0.938"	0.625"	Round/Plain Bore	1/4" to 1/2"	—	—	White	60455K52	000000
10	—	20	2"	2.2"		1"	1.719"	0.625"	Round/Plain Bore	3/4" to 7/8"	—	—	White	60455K56	00000

Gear Racks

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

	48	—	1 ft.	0.109"	1/8"	1/8"	Molded	Gray	2662N54	00000


	32	—	1 ft.	0.156"	3/16"	3/16"	Molded	Gray	2662N53	0000
	24	—	1 ft.	0.203"	1/4"	1/4"	Molded	Gray	2662N52	0000
	—	0.5	250 mm	5.9 mm	6.3 mm	4 mm	Molded	Gray	2662N55	0000
	—	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


			—	2	500 mm	23 mm	25 mm	20 mm	Machined	Blue	2662N68	000000
			—	2	1,000 mm	23 mm	25 mm	20 mm	Machined	Blue	2662N71	000000


			14 1/2° Pressure Angle—Rectangular







							Nylon

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


							32	—	1 ft.	0.156"	3/16"	3/16"	Molded	White	57655K62	00000
							24	—	1 ft.	0.203"	1/4"	1/4"	Molded	White	57655K63	00000
							20	—	4 ft.	0.325"	3/8"	3/8"	Machined	Green	60435K88	000000
							16	—	1 ft.	0.25"	5/16"	5/16"	Molded	White	57655K64	00000
							16	—	4 ft.	0.438"	1/2"	1/2"	Machined	Green	60435K89	000000
							12	—	4 ft.	0.667"	3/4"	3/4"	Machined	Green	60435K82	000000
							10	—	4 ft.	0.9"	1"	1"	Machined	Green	60435K84	000000

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


Gear with Round or Round/Machinable Bore	Gear with Round Bore and Set Screw	Gear with Keyed Bore and Set Screw

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

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

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

						Hub				Keyway
	Gear Pitch	No. of Teeth	Gear Pitch Dia.	OD	Face Wd.	Dia.	Wd.	Bore Type	For Shaft Dia.	Wd.	Dp.	Tooth Heat Treatment	Material		Each
14 1/2° Pressure Angle







				Steel

				32	16	1/2"	0.56"	3/16"	0.406"	0.313"	Round Bore with Set Screw	3/16"	—	—	Not Hardened	1117 Carbon Steel	6325K89	000000


				32	18	0.563"	0.63"	3/16"	0.406"	0.313"	Round Bore	3/16"	—	—	Not Hardened	1117 Carbon Steel	6325K94	00000
				32	20	5/8"	0.69"	3/16"	0.52"	0.31"	Round Bore with Set Screw	1/4"	—	—	Not Hardened	1117 Carbon Steel	6867K553	00000
				32	20	5/8"	0.69"	3/16"	0.531"	0.313"	Round Bore	1/4"	—	—	Not Hardened	1117 Carbon Steel	6325K95	00000
				32	24	3/4"	0.81"	3/16"	0.656"	0.313"	Round Bore	5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K96	00000
				32	40	1 1/4"	1.31"	3/16"	0.875"	0.375"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K97	00000
				24	12	1/2"	0.58"	1/4"	0.375"	0.313"	Round Bore	1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K31	00000
				24	15	5/8"	0.71"	1/4"	0.5"	0.313"	Round Bore	1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K63	00000
				24	16	0.666"	0.75"	1/4"	0.547"	0.313"	Round Bore	5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K75	00000
				24	20	0.833"	0.92"	1/4"	0.719"	0.313"	Round Bore	5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K87	00000
				24	20	0.833"	0.92"	1/4"	0.719"	0.313"	Round Bore with Set Screw	5/16"	—	—	Not Hardened	1144 Carbon Steel	6867K19	00000


				24	21	7/8"	0.96"	1/4"	0.75"	0.313"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K64	00000
				24	21	7/8"	0.96"	1/4"	0.75"	0.313"	Round Bore with Set Screw	3/8"	—	—	Not Hardened	1144 Carbon Steel	6867K21	00000
				24	24	1"	1.08"	1/4"	0.875"	0.375"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K88	00000
				24	24	1"	1.08"	1/4"	0.875"	0.375"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K22	00000
				24	36	1 1/2"	1.58"	1/4"	1.125"	0.375"	Round/Plain Bore	3/8" to 5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K65	00000
				24	36	1 1/2"	1.58"	1/4"	1.125"	0.375"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K23	000000
				24	48	2"	2.08"	1/4"	1.25"	0.375"	Round/Plain Bore	3/8" to 11/16"	—	—	Not Hardened	1144 Carbon Steel	6325K66	00000
				24	48	2"	2.08"	1/4"	1.25"	0.375"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K24	000000
				24	72	3"	3.08"	1/4"	1.375"	0.5"	Round/Plain Bore	1/2" to 13/16"	—	—	Not Hardened	1144 Carbon Steel	6325K67	00000
				24	72	3"	3.08"	1/4"	1.375"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K25	000000


				20	12	0.6"	0.7"	3/8"	0.469"	0.375"	Round Bore	5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K81	00000
				20	15	3/4"	0.85"	3/8"	0.609"	0.375"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K68	00000
				20	15	3/4"	0.85"	3/8"	0.609"	0.375"	Round Bore with Set Screw	3/8"	—	—	Not Hardened	1144 Carbon Steel	6867K27	00000
				20	16	0.8"	0.9"	3/8"	0.656"	0.375"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K82	00000
				20	16	0.8"	0.9"	3/8"	0.656"	0.375"	Round Bore with Set Screw	3/8"	—	—	Not Hardened	1144 Carbon Steel	6867K28	00000
				20	20	1"	1.1"	3/8"	0.859"	0.375"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K83	00000
				20	20	1"	1.1"	3/8"	0.859"	0.375"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K29	00000
				20	23	1.15"	1.25"	3/8"	0.969"	0.375"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K69	00000
				20	23	1.15"	1.25"	3/8"	0.969"	0.375"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K31	00000
				20	24	1.2"	1.3"	3/8"	1.063"	0.375"	Round/Plain Bore	3/8" to 9/16"	—	—	Not Hardened	1144 Carbon Steel	6325K84	00000


				20	24	1.2"	1.3"	3/8"	1.063"	0.375"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K32	00000
				20	25	1 1/4"	1.35"	3/8"	1.109"	0.375"	Round/Plain Bore	3/8" to 5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K71	00000
				20	25	1 1/4"	1.35"	3/8"	1.109"	0.375"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K33	00000
				20	32	1.6"	1.7"	3/8"	1.438"	0.5"	Round/Plain Bore	3/8" to 7/8"	—	—	Not Hardened	1144 Carbon Steel	6325K85	00000
				20	32	1.6"	1.7"	3/8"	1.439"	0.5"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K34	00000
				20	36	1.8"	1.9"	3/8"	1.625"	0.5"	Round/Plain Bore	3/8" to 15/16"	—	—	Not Hardened	1144 Carbon Steel	6325K72	00000
				20	36	1.8"	1.9"	3/8"	1.625"	0.5"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K35	000000
				20	48	2.4"	2.5"	3/8"	2"	0.5"	Round/Plain Bore	3/8" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K86	00000
				20	48	2.4"	2.5"	3/8"	2"	0.5"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K36	000000
				20	60	3"	3.1"	3/8"	2"	0.5"	Round/Plain Bore	3/8" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K73	00000


				20	60	3"	3.1"	3/8"	2"	0.5"	Keyed Bore with Set Screw	3/8"	0.094"	0.047"	Not Hardened	1144 Carbon Steel	6867K37	000000
				16	12	3/4"	0.88"	1/2"	0.563"	0.438"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K11	00000
				16	12	0.752"	0.88"	1/2"	0.563"	0.438"	Round Bore with Set Screw	3/8"	—	—	Not Hardened	1144 Carbon Steel	6867K38	00000
				16	14	7/8"	1"	1/2"	0.688"	0.438"	Round Bore	3/8"	—	—	Not Hardened	1144 Carbon Steel	6325K12	00000
16				14	7/8"	1"	1/2"	0.688"	0.438"	Round Bore with Set Screw	3/8"	—	—	Not Hardened	1144 Carbon Steel	6867K39	00000
16	16			1"	1.13"	1/2"	0.812"	0.438"	Round Bore	1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K13	00000
16	16			1"	1.13"	1/2"	0.812"	0.438"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K41	00000
16	18			1 1/8"	1.25"	1/2"	0.938"	0.438"	Round Bore	1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K14	00000
16	18			1 1/8"	1.25"	1/2"	0.938"	0.438"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K42	00000
16	20	1 1/4"		1.38"	1/2"	1.063"	0.438"	Round/Plain Bore	1/2" to 9/16"	—	—	Not Hardened	1144 Carbon Steel	6325K15	00000
16	20	1 1/4"	1.38"	1/2"	1.063"	0.438"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K43	00000
16	22	1 3/8"	1.5"	1/2"	1.188"	0.438"	Round/Plain Bore	1/2" to 5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K74	00000
16	22	1 3/8"	1.5"	1/2"	1.188"	0.438"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K44	00000
16	24	1 1/2"	1.63"	1/2"	1.313"	0.438"	Round/Plain Bore	1/2" to 3/4"	—	—	Not Hardened	1144 Carbon Steel	6325K16	00000
16	24	1 1/2"	1.63"	1/2"	1.313"	0.438"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K45	00000
16	28	1 3/4"	1.88"	1/2"	1.5"	0.5"	Round/Plain Bore	1/2" to 7/8"	—	—	Not Hardened	1144 Carbon Steel	6325K76	00000
16	28	1 3/4"	1.88"	1/2"	1.5"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K46	000000
16	30	1 7/8"	2"	1/2"	1.625"	0.5"	Round/Plain Bore	1/2" to 15/16"	—	—	Not Hardened	1144 Carbon Steel	6325K17	00000
16	30	1 7/8"	2"	1/2"	1.625"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K47	000000
16	32	2"	2.13"	1/2"	1.75"	0.5"	Round/Plain Bore	1/2" to 1"	—	—	Not Hardened	1144 Carbon Steel	6325K18	00000
16	32	2"	2.13"	1/2"	1.75"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K48	000000
16	36	2 1/4"	2.38"	1/2"	2"	0.5"	Round/Plain Bore	1/2" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K77	00000
16	36	2 1/4"	2.38"	1/2"	2"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K49	000000
16	40	2 1/2"	2.63"	1/2"	2"	0.5"	Round/Plain Bore	1/2" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K19	00000
16	40	2 1/2"	2.63"	1/2"	2"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K51	000000
16	48	3"	3.13"	1/2"	2"	0.5"	Round/Plain Bore	1/2" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K21	00000
16	48	3"	3.13"	1/2"	2"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K52	000000
16	60	3 3/4"	3.88"	1/2"	2"	0.5"	Round/Plain Bore	1/2" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K78	000000
16	60	3 3/4"	3.88"	1/2"	2"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K53	000000
12	12	1"	1.17"	3/4"	0.75"	0.5"	Round Bore	1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K22	00000
12	12	1"	1.17"	3/4"	0.75"	0.5"	Round Bore with Set Screw	1/2"	—	—	Not Hardened	1144 Carbon Steel	6867K54	00000
12	14	1.167"	1.33"	3/4"	0.906"	0.5"	Round Bore	1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K23	00000
12	14	1.167"	1.33"	3/4"	0.906"	0.5"	Keyed Bore with Set Screw	1/2"	0.125"	0.063"	Not Hardened	1144 Carbon Steel	6867K55	00000
12	15	1 1/4"	1.42"	3/4"	1"	0.5"	Round Bore	5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K79	00000
12	15	1 1/4"	1.42"	3/4"	1"	0.5"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K56	00000
12	16	1.333"	1.5"	3/4"	1.063"	0.5"	Round Bore	5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K24	00000
12	16	1.333"	1.5"	3/4"	1.063"	0.5"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K57	00000
12	18	1 1/2"	1.67"	3/4"	1.25"	0.5"	Round/Plain Bore	5/8" to 11/16"	—	—	Not Hardened	1144 Carbon Steel	6325K25	00000
12	18	1 1/2"	1.67"	3/4"	1.25"	0.5"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K58	00000
12	20	1.667"	1.83"	3/4"	1.406"	0.5"	Round/Plain Bore	5/8" to 13/16"	—	—	Not Hardened	1144 Carbon Steel	6325K26	00000
12	20	1.667"	1.83"	3/4"	1.406"	0.5"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K59	00000
12	24	2"	2.17"	3/4"	1.75"	0.5"	Round/Plain Bore	5/8" to 1"	—	—	Not Hardened	1144 Carbon Steel	6325K27	00000
12	24	2"	2.17"	3/4"	1.75"	0.5"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K61	000000
12	30	2 1/2"	2.67"	3/4"	2.25"	0.625"	Round/Plain Bore	5/8" to 1 5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K28	00000
12	30	2 1/2"	2.67"	3/4"	2.25"	0.625"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K62	000000
12	32	2.667"	2.83"	3/4"	2.25"	0.625"	Round/Plain Bore	5/8" to 1 5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K29	00000
12	32	2.667"	2.83"	3/4"	2.25"	0.625"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K63	000000
12	36	3"	3.17"	3/4"	2.5"	0.625"	Round/Plain Bore	5/8" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K1	00000
12	36	3"	3.17"	3/4"	2.5"	0.625"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K64	000000
12	40	3.333"	3.5"	3/4"	2.5"	0.625"	Round/Plain Bore	5/8" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K2	00000
12	40	3.333"	3.5"	3/4"	2.5"	0.625"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K65	000000
12	42	3 1/2"	3.67"	3/4"	2.5"	0.625"	Round/Plain Bore	5/8" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K3	00000
12	42	3 1/2"	3.67"	3/4"	2.5"	0.625"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K66	000000
12	48	4"	4.17"	3/4"	2.5"	0.75"	Round/Plain Bore	5/8" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K32	000000
12	48	4"	4.17"	3/4"	2.5"	0.75"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K67	000000
12	60	5"	5.17"	3/4"	2.75"	0.75"	Round/Plain Bore	3/4" to 1 3/4"	—	—	Not Hardened	1144 Carbon Steel	6325K4	000000
12	60	5"	5.17"	3/4"	2.75"	0.75"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K68	000000
10	12	1.2"	1.4"	1"	0.938"	0.625"	Round Bore	5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K33	00000
10	12	1.2"	1.4"	1"	0.938"	0.625"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K69	00000
10	14	1.4"	1.6"	1"	1.125"	0.625"	Round Bore	5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K34	00000
10	14	1.4"	1.6"	1"	1.125"	0.625"	Keyed Bore with Set Screw	5/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K71	00000
10	15	1 1/2"	1.7"	1"	1.219"	0.625"	Round Bore	3/4"	—	—	Not Hardened	1144 Carbon Steel	6325K5	00000
10	15	1 1/2"	1.7"	1"	1.219"	0.625"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K72	00000
10	16	1.6"	1.8"	1"	1.313"	0.625"	Round Bore	3/4"	—	—	Not Hardened	1144 Carbon Steel	6325K35	00000
10	16	1.6"	1.8"	1"	1.313"	0.625"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K73	00000
10	18	1.8"	2"	1"	1.531"	0.625"	Round/Plain Bore	3/4" to 7/8"	—	—	Not Hardened	1144 Carbon Steel	6325K36	00000
10	18	1.8"	2"	1"	1.531"	0.625"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K74	000000
10	20	2"	2.2"	1"	1.719"	0.625"	Round/Plain Bore	3/4" to 1"	—	—	Not Hardened	1144 Carbon Steel	6325K37	00000
10	20	2"	2.2"	1"	1.719"	0.625"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K75	000000
10	24	2.4"	2.6"	1"	2.125"	0.625"	Round/Plain Bore	3/4" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K38	00000
10	24	2.4"	2.6"	1"	2.125"	0.625"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K76	000000
10	25	2 1/2"	2.7"	1"	2.219"	0.625"	Round/Plain Bore	3/4" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K6	00000
10	25	2 1/2"	2.7"	1"	2.219"	0.625"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K77	000000
10	28	2.8"	3"	1"	2.125"	0.875"	Round/Plain Bore	3/4" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K7	00000
10	28	2.8"	3"	1"	2.125"	0.875"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K78	000000
10	30	3"	3.2"	1"	2.125"	0.875"	Round/Plain Bore	3/4" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K39	000000
10	30	3"	3.2"	1"	2.125"	0.875"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K79	000000
10	35	3 1/2"	3.7"	1"	2.25"	0.875"	Round/Plain Bore	3/4" to 1 5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K8	000000
10	35	3 1/2"	3.7"	1"	2.25"	0.875"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K81	000000
10	40	4"	4.2"	1"	2.25"	0.875"	Round/Plain Bore	7/8" to 1 5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K42	000000
10	48	4.8"	5"	1"	2.5"	0.875"	Round/Plain Bore	7/8" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K43	000000
10	60	6"	6.2"	1"	2.5"	0.875"	Round/Plain Bore	7/8" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K9	000000
10	60	6"	6.2"	1"	2.5"	0.875"	Keyed Bore with Set Screw	7/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K84	000000
8	12	1 1/2"	1.75"	1 1/4"	1.125"	0.75"	Round Bore	3/4"	—	—	Not Hardened	1144 Carbon Steel	6325K44	00000
8	12	1 1/2"	1.75"	1 1/4"	1.125"	0.75"	Keyed Bore with Set Screw	3/4"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K85	000000
8	14	1 3/4"	2"	1 1/4"	1.375"	0.75"	Round/Plain Bore	3/4" to 13/16"	—	—	Not Hardened	1144 Carbon Steel	6325K45	00000
8	16	2"	2.25"	1 1/4"	1.625"	0.75"	Round/Plain Bore	7/8" to 15/16"	—	—	Not Hardened	1144 Carbon Steel	6325K46	00000
8	16	2"	2.25"	1 1/4"	1.625"	0.75"	Keyed Bore with Set Screw	7/8"	0.188"	0.094"	Not Hardened	1144 Carbon Steel	6867K87	000000
8	17	2 1/8"	2.38"	1 1/4"	1.75"	0.75"	Round/Plain Bore	7/8" to 1"	—	—	Not Hardened	1144 Carbon Steel	6325K41	00000
8	18	2 1/4"	2.5"	1 1/4"	1.875"	0.75"	Round/Plain Bore	7/8" to 1 1/8"	—	—	Not Hardened	1144 Carbon Steel	6325K47	00000
8	20	2 1/2"	2.75"	1 1/4"	2.125"	0.75"	Round/Plain Bore	7/8" to 1 5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K48	000000
8	22	2 3/4"	3"	1 1/4"	2.375"	0.75"	Round/Plain Bore	7/8" to 1 5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K51	00000
8	24	3"	3.25"	1 1/4"	2.625"	1"	Round/Plain Bore	7/8" to 1 5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K49	000000
8	28	3 1/2"	3.75"	1 1/4"	2.625"	1"	Round/Plain Bore	7/8" to 1 5/8"	—	—	Not Hardened	1144 Carbon Steel	6325K53	000000
8	32	4"	4.25"	1 1/4"	2.875"	1"	Round/Plain Bore	1" to 1 13/16"	—	—	Not Hardened	1144 Carbon Steel	6325K52	000000
8	32	4"	4.25"	1 1/4"	2.875"	1"	Keyed Bore with Set Screw	1"	0.25"	1/8"	Not Hardened	1144 Carbon Steel	6867K95	000000
8	36	4 1/2"	4.75"	1 1/4"	3"	1"	Round/Plain Bore	1" to 1 7/8"	—	—	Not Hardened	1144 Carbon Steel	6325K54	000000
8	40	5"	5.25"	1 1/4"	3"	1"	Round/Plain Bore	1" to 1 7/8"	—	—	Not Hardened	1144 Carbon Steel	6325K59	000000
6	12	2"	2.33"	1 1/2"	1.5"	0.875"	Round Bore	1"	—	—	Not Hardened	1144 Carbon Steel	6325K55	00000
6	12	2"	2.33"	1 1/2"	1.5"	0.875"	Keyed Bore with Set Screw	1"	0.25"	1/8"	Not Hardened	1144 Carbon Steel	6867K98	000000
6	14	2.333"	2.67"	1 1/2"	1.812"	0.875"	Round/Plain Bore	1" to 1 1/16"	—	—	Not Hardened	1144 Carbon Steel	6325K56	000000
6	14	2.333"	2.67"	1 1/2"	1.812"	0.875"	Keyed Bore with Set Screw	1"	0.25"	1/8"	Not Hardened	1144 Carbon Steel	6867K1	000000
6	15	2 1/2"	2.83"	1 1/2"	2"	0.875"	Round/Plain Bore	1" to 1 1/4"	—	—	Not Hardened	1144 Carbon Steel	6325K92	000000
6	15	2 1/2"	2.83"	1 1/2"	2"	0.875"	Keyed Bore with Set Screw	1"	0.25"	1/8"	Not Hardened	1144 Carbon Steel	6867K2	000000
6	16	2.666"	3"	1 1/2"	2.156"	0.875"	Round/Plain Bore	1" to 1 5/16"	—	—	Not Hardened	1144 Carbon Steel	6325K57	000000
6	18	3"	3.33"	1 1/2"	2.5"	0.875"	Round/Plain Bore	1" to 1 1/2"	—	—	Not Hardened	1144 Carbon Steel	6325K58	000000
6	18	3"	3.33"	1 1/2"	2.5"	0.875"	Keyed Bore with Set Screw	1"	0.25"	1/8"	Not Hardened	1144 Carbon Steel	6867K4	000000
6	20	3.333"	3.67"	1 1/2"	2.844"	0.875"	Round/Plain Bore	1" to 1 3/4"	—	—	Not Hardened	1144 Carbon Steel	6325K93	000000
6	22	3.666"	4"	1 1/2"	3"	0.875"	Round/Plain Bore	1" to 1 7/8"	—	—	Not Hardened	1144 Carbon Steel	6325K98	000000
6	24	4"	4.33"	1 1/2"	3"	1"	Round/Plain Bore	1 1/8" to 1 7/8"	—	—	Not Hardened	1144 Carbon Steel	6325K61	000000
6	30	5"	5.33"	1 1/2"	3.125"	1"	Round/Plain Bore	1 1/8" to 2"	—	—	Not Hardened	1144 Carbon Steel	6325K62	000000
6	36	6"	6.33"	1 1/2"	3.25"	1"	Round/Plain Bore	1 1/8" to 2 1/8"	—	—	Not Hardened	1144 Carbon Steel	6325K122	000000
6	48	8"	8.33"	1 1/2"	4.125"	1"	Round/Plain Bore	1 1/8" to 2 1/2"	—	—	Not Hardened	1040 Carbon Steel	6325K123	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.

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

	Ht.	Face Wd.	Tooth Heat Treatment	Material	No. of Mounting Holes		Each
14 1/2° Pressure Angle—Rectangular







	Steel

	32	2	0.156"	3/16"	3/16"	Not Hardened	1018 Low-Carbon Steel	—	6295K11	000000


	32	4	0.156"	3/16"	3/16"	Not Hardened	1215 Carbon Steel	—	6295K242	00000
	32	6	0.156"	3/16"	3/16"	Not Hardened	1215 Carbon Steel	—	6295K243	00000
	24	2	0.208"	1/4"	1/4"	Not Hardened	1018 Low-Carbon Steel	—	6295K12	00000
	24	4	0.208"	1/4"	1/4"	Not Hardened	1018 Low-Carbon Steel	12	5170T1	000000
	24	4	0.208"	1/4"	1/4"	Not Hardened	1215 Carbon Steel	—	6295K232	00000
	24	6	0.208"	1/4"	1/4"	Not Hardened	1215 Carbon Steel	—	6295K233	00000
	20	2	0.325"	3/8"	3/8"	Not Hardened	1018 Low-Carbon Steel	—	6295K13	00000
	20	4	0.325"	3/8"	3/8"	Not Hardened	1018 Low-Carbon Steel	12	5170T2	000000
	20	4	0.325"	3/8"	3/8"	Not Hardened	1215 Carbon Steel	—	6295K112	00000
	20	6	0.325"	3/8"	3/8"	Not Hardened	1215 Carbon Steel	—	6295K113	00000


	16	2	0.438"	1/2"	1/2"	Not Hardened	1018 Low-Carbon Steel	—	6295K14	00000
	16	4	0.437"	1/2"	1/2"	Not Hardened	1018 Low-Carbon Steel	12	5170T3	000000
	16	4	0.438"	1/2"	1/2"	Not Hardened	1215 Carbon Steel	—	6295K123	00000
	16	6	0.438"	1/2"	1/2"	Not Hardened	1215 Carbon Steel	—	6295K124	00000
	12	2	0.417"	1/2"	3/4"	Not Hardened	1018 Low-Carbon Steel	—	6295K15	00000
	12	2	0.667"	3/4"	3/4"	Not Hardened	1215 Carbon Steel	—	6295K167	00000
	12	4	0.417"	1/2"	3/4"	Not Hardened	1018 Low-Carbon Steel	—	6295K132	00000
	12	4	0.667"	3/4"	3/4"	Not Hardened	1018 Low-Carbon Steel	12	5170T4	000000
	12	4	0.667"	3/4"	3/4"	Not Hardened	1215 Carbon Steel	—	6295K142	00000
	12	6	0.417"	1/2"	3/4"	Not Hardened	1018 Low-Carbon Steel	—	6295K133	00000


	12	6	0.667"	3/4"	3/4"	Not Hardened	1215 Carbon Steel	—	6295K143	000000
	10	2	0.525"	5/8"	1"	Not Hardened	1018 Low-Carbon Steel	—	6295K17	00000
	10	2	0.9"	1"	1"	Not Hardened	1018 Low-Carbon Steel	—	6295K18	00000
	10	4	0.525"	5/8"	1"	Not Hardened	1215 Carbon Steel	—	6295K152	00000
	10	4	0.9"	1"	1"	Not Hardened	1215 Carbon Steel	—	6295K163	000000
	10	6	0.525"	5/8"	1"	Not Hardened	1215 Carbon Steel	—	6295K153	000000
	10	6	0.9"	1"	1"	Not Hardened	1215 Carbon Steel	—	6295K164	000000
	8	2	0.625"	3/4"	1 1/4"	Not Hardened	1018 Low-Carbon Steel	—	6295K19	00000
	8	2	1.125"	1 1/4"	1 1/4"	Not Hardened	1215 Carbon Steel	—	6295K21	00000
	8	4	0.625"	3/4"	1 1/4"	Not Hardened	1215 Carbon Steel	—	6295K172	000000


	8	4	1.125"	1 1/4"	1 1/4"	Not Hardened	1215 Carbon Steel	—	6295K182	000000
	8	6	0.625"	3/4"	1 1/4"	Not Hardened	1215 Carbon Steel	—	6295K173	000000
	8	6	1.125"	1 1/4"	1 1/4"	Not Hardened	1215 Carbon Steel	—	6295K183	000000
	6	2	0.833"	1"	1 1/2"	Not Hardened	1018 Low-Carbon Steel	—	6295K22	00000
	6	2	1.333"	1 1/2"	1 1/2"	Not Hardened	1018 Low-Carbon Steel	—	6295K23	000000
	6	4	0.833"	1"	1 1/2"	Not Hardened	1215 Carbon Steel	—	6295K192	000000
	6	4	1.333"	1 1/2"	1 1/2"	Not Hardened	1215 Carbon Steel	—	6295K212	000000
	6	6	0.833"	1"	1 1/2"	Not Hardened	1215 Carbon Steel	—	6295K193	000000
	6	6	1.333"	1 1/2"	1 1/2"	Not Hardened	1215 Carbon Steel	—	6295K213	000000

Plastic Worm Gears

These plastic gears are lighter and quieter than metal gears—pair them with metal worms for lubrication-free operation. 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.

Gears

Acetal—Acetal gears are lightweight, and resist corrosion and chemicals. They absorb less moisture than nylon gears, so they’re less prone to dimensional changes. They’re best suited for light duty applications, such as prototyping.

Nylon—Nylon gears are lightweight and stronger than acetal gears.

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

													Hub, mm
	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	Fabrication	Color	Dia.	Wd.	For Thread Direction		Each
Round Bore—Acetal



		0.5	10:1	20	20°	10	2	11	5	12	4	Molded	White	9	7	Right Hand	4037N112	000000


		0.5	20:1	20	20°	10	1	11	5	12	4	Molded	White	9	7	Right Hand	4037N111	00000
		0.5	30:1	30	20°	15	1	16	5	12	4	Molded	White	12	7	Right Hand	4037N113	00000
		0.5	40:1	40	20°	20	1	21	5	12	5	Molded	White	15	7	Right Hand	4037N115	00000
		0.5	50:1	50	20°	25	1	26	5	12	5	Molded	White	20	7	Right Hand	4037N116	00000
		0.5	60:1	60	20°	30	1	31	5	12	5	Molded	White	25	7	Right Hand	4037N117	00000
		0.8	10:1	20	20°	16	2	17.6	9	18	5	Molded	White	12	9	Right Hand	4037N119	00000
		0.8	50:1	50	20°	40	1	41.6	9	18	8	Molded	White	25	9	Right Hand	4037N124	00000
		0.8	60:1	60	20°	48	1	49.6	9	18	8	Molded	White	25	9	Right Hand	4037N125	00000


		Round Bore—Nylon



				1	10:1	20	20°	20	2	23	10	20	6	Molded	Blue	16	10	Right Hand	4037N129	00000


				1	30:1	30	20°	30	1	33	10	20	6	Molded	Blue	20	10	Right Hand	4037N131	00000
				1	50:1	50	20°	50	1	53	10	20	8	Molded	Blue	30	10	Right Hand	4037N133	00000
				1.5	10:1	20	20°	30	2	34.5	12	22	8	Molded	Blue	22	10	Right Hand	4037N127	00000

Plastic Bevel Gears

Gears Sold Separately


Large Gears	Small Gears

Reduce speeds with these quiet-running, lightweight, and naturally rust resistant nylon gears. They're a better choice than metal gears for noise-sensitive areas and designs with weight constraints, but they're not as strong. Because they’re self-lubricating, these bevel gears are commonly used in food machinery. They should not, however, come in direct contact with food or chemicals that will come in contact with food.

A complete set consists of a large gear and a small gear, also known as a pinion (sold separately). For the gears to mesh correctly, they must have the same face width, pitch or module, and pressure angle.

Speed Ratio—The ratio by which shaft speed is reduced when transferring motion from the smaller to the larger gear. To increase shaft speed, transfer motion from the larger to the smaller gear. Changing shaft speed also changes torque: as speed decreases, torque increases. To achieve the speed ratio listed, match it across a set of compatible gears.

					Large Gears			Small Gears
Face Wd., mm	Gear Module	Pressure Angle	Speed Ratio	Material	For Shaft Dia., mm		Each	For Shaft Dia., mm		Each
6	1	20°	2:1	Nylon	8	3856N121	000000	6	3856N119	000000
8	1.25	20°	2:1	Nylon	10	3856N112	00000	8	3856N111	00000

Plastic Miter Gears


Gears Sold Separately

Connect two shafts at a right angle without changing shaft speed or torque. Made of plastic, these gears run quieter than metal gears and have good corrosion and chemical resistance.

For two gears to mesh correctly, they must have the same pressure angle, pitch/module, and number of teeth.

Nylon—Nylon gears are self-lubricating, so they’re often used in food machinery. However, they’re not approved for direct contact with food or chemicals that will come into contact with food.

Acetal—Acetal gears absorb less moisture than nylon gears and are less prone to dimensional change. They’re best suited for use in light duty applications such as prototyping.

														Hub
	Gear Module	Gear Pitch	No. of Teeth	Pressure Angle	Gear Pitch Dia.	OD	Face Wd.	Overall Wd.	For Shaft Dia.	Mounting Distance	Material	Fabrication	Color	Dia.	Wd.		Each
Round Bore



		—	48	18	20°	3/8"	0.4"	0.05"	0.264"	1/8"	0.406"	Nylon	Molded	White	0.328"	0.188"	7297K11	000000


		—	48	24	20°	1/2"	0.53"	0.09"	0.375"	3/16"	0.531"	Nylon	Molded	White	0.375"	0.25"	7297K12	00000
		—	32	16	20°	1/2"	0.55"	0.11"	0.344"	3/16"	0.5"	Nylon	Molded	White	0.406"	0.188"	7297K13	00000
		—	32	24	20°	3/4"	0.8"	0.16"	0.406"	3/16"	0.688"	Nylon	Molded	White	0.5"	0.188"	7297K14	00000
		—	24	24	20°	1"	1.05"	0.26"	0.563"	1/4"	0.875"	Nylon	Molded	White	0.625"	0.188"	7297K15	00000
		—	24	30	20°	1 1/4"	1.31"	0.19"	0.578"	1/4"	1.031"	Nylon	Molded	White	0.625"	0.313"	7297K16	00000
		—	24	36	20°	1 1/2"	1.56"	0.21"	0.609"	5/16"	1.188"	Nylon	Molded	White	0.688"	0.313"	7297K17	00000
		—	16	16	20°	1"	1.09"	0.22"	0.75"	3/8"	1.063"	Nylon	Molded	White	0.75"	0.438"	7297K18	00000
		0.5	—	20	20°	10 mm	10.7 mm	2.5 mm	8 mm	3 mm	11 mm	Acetal	Molded	White	8 mm	4 mm	2810N1	0000
		0.8	—	20	20°	16 mm	17.1 mm	3.5 mm	10.8 mm	5 mm	16 mm	Acetal	Molded	White	12 mm	5 mm	2810N2	0000
		1	—	20	20°	20 mm	21.4 mm	4.5 mm	14.6 mm	6 mm	21 mm	Acetal	Molded	White	16 mm	7 mm	2810N3	0000


		1	—	20	20°	20 mm	21.4 mm	5 mm	14 mm	6 mm	20 mm	Nylon	Molded	Blue	16 mm	8 mm	2810N516	00000
		1	—	25	20°	25 mm	26.4 mm	6 mm	15 mm	6 mm	23 mm	Nylon	Molded	Blue	20 mm	8 mm	2810N517	00000
		1.5	—	20	20°	30 mm	32.1 mm	7 mm	20.6 mm	8 mm	30 mm	Acetal	Molded	White	20 mm	10 mm	2810N4	0000
		2	—	20	20°	40 mm	42.8 mm	10 mm	25 mm	10 mm	37 mm	Nylon	Molded	Blue	34 mm	14 mm	2810N523	00000