64 Teeth Sprockets | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	OD OD

	Component Component


Gear	Internal Gear

	Number of Teeth Number of Teeth	Show

	Number of Teeth Number of Teeth	Hide

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
32
33
34
35
36
37
38
39
40
42
44
45
46
48
50
52
54
55
56
60
62
64
65
70
72
75
76
80
84
90
96
100
112
120
128
130

	Gear Type Gear Type


Spur	Ratchet

Bevel

	Material Material

	Face Width Face Width

	Bore Type Bore Type


Round	Clamping

	For Shaft Diameter For Shaft Diameter

	Gear Pitch Diameter Gear Pitch Diameter

1.333"

64mm

	Speed Ratio Speed Ratio

4:1

	Gear Pitch Gear Pitch

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

RoHS Compliant

	Teeth Heat Treatment Teeth Heat Treatment

Not Hardened

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

DFARS Specialty Metals
COTS-Exempt

	Pressure Angle Pressure Angle

14 1/2°

20°

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

REACH Compliant

	Hub Diameter Hub Diameter

	Overall Width Overall Width

	Mounting Distance Mounting Distance

2.5"

	Module Module

	ID ID

1.961"

	Hub Width Hub Width

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About Gears

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. Compared to plastic gears and racks, they’re better for high-load, high-speed, and heavy duty applications. Also known as spur gears.

Combine gears with different numbers of teeth to change speed and torque in your assembly. 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.

For components to mesh correctly, they must have the same pressure angle and pitch/module.

Brass gears and 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.

Gears with teeth that are not hardened can be hardened to fit your application.

Stainless steel gears and racks resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning. Gears with a clamping bore have a built-in clamp that securely grips shafts without marring them. Use the included clamping screw to tighten or loosen the grip.

For technical drawings and 3-D models, click on a part number.

Inch Gears

Gear with Round Bore and Set Screw

									Hub
Gear Pitch	Number of Teeth	Gear Pitch Dia.	OD	Face Wd.	Overall Wd.	For Shaft Dia.	Material	Teeth Heat Treatment	Dia.	Wd.	Set Screw Thread Size		Each
Round Bore with Set Screw
32	64	2"	2.06"	3/16"	0.437"	1/4"	303 Stainless Steel	Not Hardened	0.5"	0.25"	6-32	0000000	000000

Metric Gears

Gear with Clamping Bore and Clamping Screw

									Hub
Module	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Material	Teeth Heat Treatment	Dia., mm	Wd., mm	Clamping Screw Thread Size		Each
Clamping Bore with Clamping Screw
1	64	64	66	6	20	10	303 Stainless Steel	Not Hardened	24	14	M4	0000000	0000000

Inch Internal Gears

Gear Pitch	Number of Teeth	Gear Pitch Dia.	OD	ID	Face Wd.	Material		Each
32	64	2"	2.75"	1.961"	3/16"	Brass	000000	0000000

Metal Bevel Gears

Gear and Pinion Sold Separately

Gear

A type of miter gear where one gear (sometimes called a pinion) is smaller than the other, bevel gears provide right-angle speed reduction at speed ratios ranging from 2:1 to 5:1. All are carbon steel for strength; they're compatible with plastic bevel gears. Teeth are not hardened so you can harden them to fit your application. Hardening a gear’s teeth increases its wear resistance.

A complete set consists of a gear and pinion (sold separately). For a gear and pinion to mesh correctly, they must have the same pressure angle, pitch/module, and face width. Speed ratio is the ratio by which shaft speed is reduced when transferring motion from pinion to gear. To increase shaft speed, transfer motion from gear to pinion. Changing shaft speed also changes torque: as speed decreases, torque increases.

For technical drawings and 3-D models, click on a part number.

Inch Gears

										Hub
Face Wd.	Gear Pitch	Pressure Angle	Speed Ratio	Number of Teeth	Gear Pitch Dia.	OD	Overall Wd.	For Shaft Dia.	Mounting Distance (A)	Dia.	Wd.	Material		Each
Round Bore
0.48"	16	20°	4:1	64	4"	4.02"	1.019"	5/8"	1.375"	2.25"	0.563"	1144 Carbon Steel	0000000	0000000

Inch Pinions

Gear and Pinion Sold Separately

Pinion

										Hub
Face Wd.	Gear Pitch	Pressure Angle	Speed Ratio	Number of Teeth	Gear Pitch Dia.	OD	Overall Wd.	For Shaft Dia.	Mounting Distance (B)	Dia.	Wd.	Material		Each
Round Bore
0.48"	16	20°	4:1	16	1"	1.17"	0.989"	1/2"	2.5"	0.813"	0.438"	1144 Carbon Steel	0000000	000000

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

A former industry standard, 14½° pressure angle gears are often found on older machinery. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re also known as spur gears.

Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion.

For components to mesh correctly, they must have the same pressure angle and pitch.

For technical drawings and 3-D models, click on a part number.

Gears

Gear with Round or
Round/Machinable
Bore

										Hub
Gear Pitch	Number of Teeth	Gear Pitch Dia.	OD	Face Wd.	Overall Wd.	For Shaft Dia.	Material	Fabrication	Color	Dia.	Wd.		Each
Round Bore
48	64	1.333"	1.37"	1/8"	0.375"	1/4"	Nylon Plastic	Molded	White	0.625"	0.25"	00000000	000000

Plastic 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. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re also known as spur gears.

Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion.

For components to mesh correctly, they must have the same pressure angle and pitch/module.

Acetal gears are best suited for use in light duty machines or for prototyping.

For technical drawings and 3-D models, click on a part number.

Metric Gears

Round Bore

										Hub
Module	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Material	Fabrication	Color	Dia., mm	Wd., mm		Each
Round Bore
1	64	64	66	6	14	8	Acetal Plastic	Molded	White	18	8	00000000	000000

Metal Ratcheting Gears

Pawl and Gear Sold Separately

Compared to plastic gears, these metal ratcheting 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. Gears with teeth that are not hardened can be hardened to fit your application. Hardening a gear’s teeth increases its wear resistance.

For technical drawings and 3-D models, click on a part number.

Gears

Round Bore
Face Wd.	Number of Teeth	OD	For Shaft Dia.	Mounting Distance	Material	Teeth Heat Treatment		Each
3/8"	64	4"	11/16"	2.5"	303 Stainless Steel	Not Hardened	0000000	000000