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Spur Gears

3548 Products

Inch Crossed Gears - 14 1/2° Pressure Angle

Imperial crossed-axis gears with 14.5° pressure angle for precise motion transfer between skewed shafts.

Metric Crossed Gears - 20° Pressure Angle

Gears designed to transmit motion between non-parallel, non-intersecting shafts with 20° pressure angle.

Metric Parallel Gears - 20° Pressure Angle

Parallel-axis gears with 20° pressure angle, transmitting torque and motion efficiently between parallel shafts.

Plastic Gears - 14 1/2° Pressure Angle

Plastic gears with a 14 1/2° pressure angle are designed for precise and smooth motion transfer, featuring dimensions that provide efficient gear engagement and are often used in applications requiring quiet and lightweight components.

Plastic Inch Gears - 20° Pressure Angle

Plastic inch gears with a 20° pressure angle are designed to mesh smoothly and efficiently, providing reliable motion transfer in mechanical systems, with dimensions and specifications based on inch units.

Plastic Metric Gears - 20° Pressure Angle

Plastic metric gears with a 20° pressure angle are designed for precise and efficient motion transfer in mechanical systems, with dimensions and specifications adhering to metric standards.

Metal Inch Gears - 20° Pressure Angle

These gears are designed and measured in inch-based units (as opposed to metric gears) and are commonly made from metals like steel, brass, bronze, or aluminum.

Drawn Pinion Wire

Continuous gear-toothed wire stock, cold-drawn for strength and precision, easily cut into multiple identical pinions for manufacturing.

Gear Rack

Linear gear with straight teeth designed to mesh with a spur gear, converting rotary motion into linear motion or vice versa, widely used in automation and positioning systems.

Internal Gears

Gears with teeth cut on the inner surface, meshing with external gears for compact power transmission in enclosed systems.

Standard Spur Gears

Spur gears are one of the simplest and most widely used types of gears. They are characterized by their straight teeth that are parallel to the axis of rotation.

Stem Pinions

Small precision pinions cut directly on shafts, widely used in compact mechanical assemblies and precision drives.

Change Gears

Interchangeable gears used in machine tools to alter speed or feed rates, enabling flexible and precise operational adjustments.

Metal Metric Gears - 20° Pressure Angle

These gears are widely used in mechanical systems to transmit rotary motion and power between shafts. Just like inch-based gears, metal metric gears come in various types and materials.

Metal Inch Internal Gears - 20° Pressure Angle

These gears mesh with external gears and are typically used in applications where compact design and space efficiency are important.

Metal Metric Internal Gears - 20° Pressure Angle

These gears are primarily used in applications requiring compact design, such as planetary gear systems, where space efficiency and high torque transmission are essential.

Metal Gears - 14 1/2° Pressure Angle

These gears are designed for precision applications where smooth and efficient gear meshing is required. The pressure angle is the angle between the line of action (the direction in which force is transmitted) and the line perpendicular to the gear tooth's surface.

What Is a Spur Gear?

A spur gear is a cylindrical gear with straight teeth aligned parallel to the shaft axis. It is designed to transmit motion and power efficiently between parallel shafts. Spur gears help control torque and speed accurately, reduce backlash, and operate smoothly in a wide range of applications. They are widely used in industrial machinery, automotive transmissions, consumer appliances, robotics, and precision instruments.

Key Features

Precision Tooth Design

The straight, evenly spaced teeth allow for smooth motion transfer and reduce vibration, while maintaining an optimal contact ratio. Spur gears typically feature standard pressure angles of 14½° or 20°, balancing load capacity, durability, and noise reduction.

Material Options

Spur gears can be manufactured from:

Hardened steel: High strength and wear resistance for heavy-duty applications.
Stainless steel: Corrosion-resistant, ideal for harsh or wet environments.
Aluminum alloys: Lightweight with high strength-to-weight ratio.
Engineering plastics (POM, nylon, PEEK): Quiet, low-friction, and chemically resistant for precision instruments and electronics.

Configurations

Available types include external and internal gears, keyway and spline hubs, pin or split hubs, and rack-and-pinion systems. This versatility allows spur gears to adapt to diverse mechanical setups while maintaining precise motion control.

Where Are Spur Gears Commonly Used?

Spur gears are used across multiple industries:

Industrial machinery: Conveyors, mixers, pumps, and automated systems requiring reliable torque transfer.
Automotive systems: Transmission assemblies and speed reduction drives.
Consumer appliances and electronics: Washing machines, clocks, blenders, and precision instruments.
Robotics and automation: Servo drives, actuators, and CNC machinery needing accurate positioning and repeatable motion.

Benefits of Spur Gears

Reliable and durable: Resistant to wear, slippage, and mechanical failure.
Efficient power transmission: Minimal energy loss during operation.
Cost-effective: Simple design enables economical manufacturing.
Precision performance: Provides consistent speed, torque adjustment, and accurate motion transfer.

These benefits make spur gears ideal for industrial, automotive, and precision applications.

Why Choose LILY Bearing?

LILY Bearing combines advanced manufacturing techniques, stringent quality control, and high-grade materials to deliver spur gears that meet exacting industrial standards. We offer tailored solutions and technical support for both high-load and precision applications. Our team’s reliable delivery ensures your mechanical systems perform efficiently and last longer.