Right-Angle Gears | McMaster-Carr

	Component Component


Gear	Worm

Shaft-Mounted Worm	Gear Rack

	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

	Speed Ratio Speed Ratio

	Gear Type Gear Type

	Number of Teeth Number of Teeth

10
12
13
15
16
18
20
21
24
25
26
28
30
32
36
40
44
45
48
50
60
64
72
80
100
120

	OD OD

	Material Material

	Bore Type Bore Type


Round	Keyed

Machinable

	For Shaft Angle For Shaft Angle


45°	60°

90°	120°

	Gear Pitch Gear Pitch

6
8
10
12
16
18
20
24
32
48
64

	Face Width Face Width

	Overall Width Overall Width

	Overall Length Overall Length

	Module Module

	Gear Pitch Diameter Gear Pitch Diameter

	Pressure Angle Pressure Angle

14 1/2°

20°

	Hub Diameter Hub Diameter

	Output Shaft Diameter Output Shaft Diameter

	Number of Output Shafts Number of Output Shafts

	1		2

	Hub Width Hub Width

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

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535 Products

About Gears

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.

Metal Bevel Gears

A type of miter gear where one gear is smaller than the other, bevel gears provide right-angle speed reduction at ratios ranging from 2:1 to 5:1. They’re more efficient than worm gears because they create less friction.

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.

High-Power Metal Bevel Gears

Made from carbon steel with spiral teeth, these gears handle heavier loads at higher speeds than bevel gears with straight teeth because their teeth stay in contact longer.

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 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

Plastic Miter Gears

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

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.

Plastic Bevel Gears

Reduce speeds where noise, corrosion, and frequent lubrication are a concern. Compared to metal gears, these nylon gears run more quietly, won't rust, and don't need to be lubricated.

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.

Gear Boxes and Speed Reducers

Right-Angle Gear Boxes

With shaft diameters of 3/8" and larger, these gear boxes transmit higher speeds and greater torque than Compact Right-Angle Gear Boxes.

Compact Right-Angle Gear Boxes

For small machinery and tight spots, these gear boxes have 1/4" diameter and smaller shafts and a footprint of less than 2½" square.

Metric Right-Angle Gear Boxes

Shaft diameters range from 5 to 35 mm.

Low-Profile Right-Angle Speed Reducers

The input and output shafts are positioned at the same height, so these speed reducers take up less than half the vertical space as our standard right-angle speed reducers.

Right-Angle Speed Reducers

Adjust shaft speed and torque for use in low-speed, high-torque applications.

Right-Angle Speed Reducers
for Face-Mount AC Motors

Mount these speed reducers to a NEMA 56C motor.

Flexible-Mount Right-Angle Speed
Reducers for Face-Mount AC Motors

With output shaft openings on both sides, these speed reducers adapt to fit multiple configurations. Mount to a NEMA 56C motor.

Sanitary Right-Angle Speed Reducers

Cut shaft speed and increase torque while transmitting motion at a 90° angle in food, pharmaceutical, and other sanitary environments.

Sanitary Right-Angle Speed
Reducers for Face-Mount AC Motors

With a sanitary design for food-processing environments, these speed reducers mount to the face of your motor—no coupler required—to slow shafts and increase torque while transmitting motion at a 90° angle.