18 Teeth Sprockets | McMaster-Carr

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	Roller Chain Trade Size Roller Chain Trade Size

04B

05B

12B
16B-2
25
35
35-2
40
40-2
41

50
50-2
60
60-2
80
081B
100
120

	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
31
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

	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

	Pitch Pitch

	Material Material

	Bore Type Bore Type

	OD OD

	ID ID

	For Shaft Type For Shaft Type

Keyed

Round

	For Roller Chain Strand Type For Roller Chain Strand Type


Single	Double

	Overall Width Overall Width

	Sprocket Type Sprocket Type

Standard

Idler

	Hub Diameter Hub Diameter

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

DFARS Specialty Metals
COTS-Exempt

	Roller Chain Standard Roller Chain Standard

ANSI

ISO

DIN

	Shaft Mount Type Shaft Mount Type

Set Screw

Press Fit

	For Maximum Shaft Diameter For Maximum Shaft Diameter

	Bearing Type Bearing Type

Ball

Roller

	Keyway Width Keyway Width

	Keyway Depth Keyway Depth

	Component Component

	Gear

	For Maximum Belt Width For Maximum Belt Width

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290 Products

About Roller Chain and Sprockets

Sprockets for ANSI Roller Chain

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

Machinable-Bore Sprockets for ANSI Roller Chain

For a custom fit on your shaft, these sprockets can be machined to your exact specifications.

Wear-Resistant Sprockets for ANSI Roller Chain

Hardened teeth give these steel sprockets increased wear resistance for a long service life.

Corrosion-Resistant Sprockets for ANSI Roller Chain

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

Machinable-Bore Corrosion-Resistant
Sprockets for ANSI Roller Chain

For a custom fit on your shaft, these sprockets can be machined to your exact specifications.

Lightweight Sprockets for ANSI Roller Chain

Made of nylon, these sprockets are lightweight, quiet, and corrosion resistant.

Flat Sprockets for ANSI Roller Chain

Also known as A-plate sprockets, these have a slim profile that fits in narrow spaces.

Sprockets for Double-Strand ANSI Roller Chain

These sprockets have two rows of teeth for use with double-strand ANSI roller chain.

Sprockets for Metric Roller Chain

Designed to meet ISO 606 and DIN 8187 international dimensional standards, these sprockets are for use with compatible ISO and DIN roller chain.

Machinable-Bore Corrosion-Resistant
Sprockets for Metric Roller Chain

Machine the center of these sprockets to fit the exact dimensions of your shaft. The teeth are sized to fit into metric ISO roller chain.

Flat Sprockets for Metric Roller Chain

With metric teeth and slim profile, these sprockets allow your ISO roller chain to reach narrow spaces. They're commonly referred to as A-plate sprockets.

Sprockets for Double-Strand Metric Roller Chain

The double row of teeth on these sprockets are designed to fit into metric ISO double-strand roller chain.

Sprockets for Miniature Roller Chain

Often used in electronic equipment, instrumentation devices, printers, and other compact machinery, these sprockets are made for use with our miniature roller chain.

Idler Sprockets

Idler Sprockets for ANSI Roller Chain

These sprockets are made of steel.

Wear-Resistant Idler Sprockets for ANSI Roller Chain

Hardened teeth give these steel sprockets increased wear resistance for a long service life.

Idler Sprockets for Metric Roller Chain

Keep constant tension on your drive with these sprockets that press against your metric ISO roller chain to take up slack and reduce wear and vibration.

Idler Sprockets for Double-Strand ANSI Roller Chain

These idler sprockets have two rows of teeth for use with double-strand ANSI roller chain.

Bushing-Bore Sprockets

Quick-Disconnect (QD) Bushing-Bore
Sprockets for ANSI Roller Chain

Use these sprockets with compatible QD bushings.

Taper-Lock Bushing-Bore
Sprockets for ANSI Roller Chain

Get the same sizing versatility as quick-disconnect sprockets while using less space.

Split-Tapered Bushing-Bore
Sprockets for ANSI Roller Chain

Since these sprockets grip bushings more tightly than taper-lock sprockets, they’re often used in high-torque applications.

Flat Taper-Lock Bushing-Bore Sprockets
for Double-Strand Metric Roller Chain

With a slim profile and a double row of teeth, these sprockets allow your metric ISO double-strand roller chain to fit into tight spaces. They’re often called A-plate sprockets.

Taper-Lock Bushing-Bore
Sprockets for Metric Roller Chain

While their teeth fit into metric ISO roller chain, these sprockets use taper-lock bushings to grip shafts.

Timing Belts and Pulleys

L Series Timing Belt Pulleys

These L series (light) pulleys and have trapezoidal teeth.

L Series Corrosion-Resistant Timing Belt Pulleys

Pulleys are anodized aluminum, which is more corrosion resistant than steel.

L Series Quick-Disconnect Timing Belt Pulleys

Carry heavy loads without slippage—pulleys mount with a bushing for a more secure grip on the shaft than set screws.

XL Series Corrosion-Resistant Timing Belt Pulleys

Pulleys are anodized aluminum, which is more corrosion resistant than steel.

XL Series Lightweight Timing Belt Pulleys

Acetal and aluminum construction makes these pulleys useful in for weight-sensitive applications.

XL Series Timing Belt Pulleys

Pulleys are XL series (extra light) and have trapezoidal teeth.

H Series Timing Belt Pulleys

Pulleys are H series (heavy) and have trapezoidal teeth.

H Series Quick-Disconnect Timing Belt Pulleys

Move heavy loads without slippage—pulleys mount with a bushing for a more secure grip on the shaft than set screws.

MXL Series Corrosion-Resistant Timing Belt Pulleys

Anodized aluminum has good corrosion resistance.

MXL Series Lightweight Timing Belt Pulleys

Made from polycarbonate, these pulleys are useful in applications with weight constraints.

Timing Belt Idler Pulleys

Add these free-spinning pulleys to your timing belt setup to minimize vibration and keep belts from wearing out.

High-Strength Timing Belts and Pulleys

High-Strength GT Timing Belt Pulleys

For higher speed or higher torque applications, these GT series timing belt pulleys provide a more precise fit than HTD pulleys. Use them where accuracy is critical, such as in storage and retrieval systems or in robotics.

High-Strength Ultra-Quiet Timing Belt Pulleys

Teeth are curved and set in an offset pattern for high strength with 25% less operating noise than pulleys and belts with trapezoidal teeth.

Gears and Gear Racks

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

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

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.

High-Power Metal Gears

For smooth, quiet operation at high speeds under heavy loads, helical gears have curved teeth that engage gradually and stay in contact longer than straight teeth.

Metal Miter Gears

With straight, conically shaped teeth and a 1:1 speed ratio, miter gears connect two shafts at a right angle without changing shaft speed or torque. They're more efficient than spiral miter gears because they create less friction.

Metal Worms and Worm Gears

Worm gears use screw threads to reduce shaft speed by ratios of 10:1 and greater while transmitting motion at a right angle.

High-Power Metal Miter Gears

Also known as spiral miter gears, these gears have curved teeth that gradually engage and stay in contact longer than straight teeth so they handle heavier loads at higher speeds. Speed ratio is 1:1.

Plastic 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 Miter Gears

Connect two shafts at a right angle without changing shaft speed or torque.

Ratcheting Gears

Metal Ratcheting Gears

Compared to plastic gears, metal gears are better for high-load, high-speed, and heavy duty applications.

Plastic Ratcheting Gears

A light duty alternative to metal, plastic gears have good corrosion and chemical resistance.

About Roller Chain and Sprockets

Sprockets

Sprockets for ANSI Roller Chain

Machinable-Bore Sprockets for ANSI Roller Chain

Wear-Resistant Sprockets for ANSI Roller Chain

Corrosion-Resistant Sprockets for ANSI Roller Chain

Machinable-Bore Corrosion-ResistantSprockets for ANSI Roller Chain

Lightweight Sprockets for ANSI Roller Chain

Flat Sprockets for ANSI Roller Chain

Sprockets for Double-Strand ANSI Roller Chain

Sprockets for Metric Roller Chain

Machinable-Bore Corrosion-ResistantSprockets for Metric Roller Chain

Flat Sprockets for Metric Roller Chain

Sprockets for Double-Strand Metric Roller Chain

Sprockets for Miniature Roller Chain

Idler Sprockets

Idler Sprockets for ANSI Roller Chain

Wear-Resistant Idler Sprockets for ANSI Roller Chain

Idler Sprockets for Metric Roller Chain

Idler Sprockets for Double-Strand ANSI Roller Chain

Bushing-Bore Sprockets

Quick-Disconnect (QD) Bushing-BoreSprockets for ANSI Roller Chain

Taper-Lock Bushing-BoreSprockets for ANSI Roller Chain

Split-Tapered Bushing-BoreSprockets for ANSI Roller Chain

Flat Taper-Lock Bushing-Bore Sprocketsfor Double-Strand Metric Roller Chain

Taper-Lock Bushing-BoreSprockets for Metric Roller Chain

Timing Belts and Pulleys

L Series Timing Belt Pulleys

L Series Corrosion-Resistant Timing Belt Pulleys

L Series Quick-Disconnect Timing Belt Pulleys

XL Series Corrosion-Resistant Timing Belt Pulleys

XL Series Lightweight Timing Belt Pulleys

XL Series Timing Belt Pulleys

H Series Timing Belt Pulleys

H Series Quick-Disconnect Timing Belt Pulleys

MXL Series Corrosion-Resistant Timing Belt Pulleys

MXL Series Lightweight Timing Belt Pulleys

Timing Belt Idler Pulleys

High-Strength Timing Belts and Pulleys

High-Strength GT Timing Belt Pulleys

High-Strength Ultra-Quiet Timing Belt Pulleys

Gears and Gear Racks

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

Metal Gears and Gear Racks—20° Pressure Angle

High-Power Metal Gears

Metal Miter Gears

Metal Worms and Worm Gears

High-Power Metal Miter Gears

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

Plastic Gears and Gear Racks—20° Pressure Angle

Plastic Miter Gears

Ratcheting Gears

Metal Ratcheting Gears

Plastic Ratcheting Gears

Machinable-Bore Corrosion-Resistant
Sprockets for ANSI Roller Chain

Machinable-Bore Corrosion-Resistant
Sprockets for Metric Roller Chain

Quick-Disconnect (QD) Bushing-Bore
Sprockets for ANSI Roller Chain

Taper-Lock Bushing-Bore
Sprockets for ANSI Roller Chain

Split-Tapered Bushing-Bore
Sprockets for ANSI Roller Chain

Flat Taper-Lock Bushing-Bore Sprockets
for Double-Strand Metric Roller Chain

Taper-Lock Bushing-Bore
Sprockets for Metric Roller Chain