Spur Gears | McMaster-Carr

	Component Component


Gear	Gear Rack

Gear Stock	Internal Gear

	Number of Teeth Number of Teeth

11
12
14
15
16
17
18
19
20
21
22
23
24
25
26
28
30
32
34
35
36
38
40
42
44
45
48
50
52
55
56
60
62
64
70
72
75
76
80
84
90
96
100
120
128

	System of Measurement System of Measurement

	For Shaft Diameter For Shaft Diameter

1/32" to 11/32"

1/32" to 15/32"

1/32" to 17/32"

1/32" to 19/32"

1/32" to 21/32"

1/32" to 11/16"

1/32" to 13/16"

1/32" to 1 3/32"

5/8" to 1 5/16"

3/4" to 1 5/16"

7/8" to 1 5/16"

1 1/8" to 1 7/8"

1 1/8" to 2 1/8"

1 1/8" to 2 1/2"

	Gear Pitch Diameter Gear Pitch Diameter

	OD OD

	Gear Pitch Gear Pitch

6
8
10
12
16
20
24
32
48
64

	Bore Type Bore Type


Round	Machinable

Keyed	Clamping

	Material Material

Stainless Steel

	Face Width Face Width

	Pressure Angle Pressure Angle

	Module Module

	Overall Width Overall Width

	Hub Diameter Hub Diameter

	Hub Width Hub Width

	Teeth Heat Treatment Teeth Heat Treatment

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Set Screw Thread Size Set Screw Thread Size

	Keyway Width Keyway Width

	Color Color

	White		Blue
	Gray		Green

	Fabrication Fabrication

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About Gears

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Gears and Gear Racks

Metal Gears and Gear Racks—20° Pressure Angle

The current industry standard, these 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears. They're also known as spur gears.

Metal Gears and Gear Racks—14 1/2° Pressure Angle

A former industry standard, 14½° pressure angle gears are often found on older machinery.

Plastic Gears and Gear Racks—20° Pressure Angle

The current industry standard, gears with a 20° pressure angle have thicker, stronger teeth than gears with a 14½° pressure angle.

Plastic Gears and Gear Racks—14 1/2° Pressure Angle

A former industry standard, 14½° pressure angle gears are often found on older machinery.

Gear Rod Stock

Machine your own gears to fit the exact face width and shaft diameter required.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)