Spur Gear

Spur gears are the simplest and most commonly used type of gears. They consist of teeth that are cut straight and parallel to the axis of the gear. These gears are designed to transmit power and motion between parallel shafts, making them highly efficient for a variety of applications.

Spur Gear Application Range

Our productions mainly used in fields of mining, metallurgy, cement, sugar plant, petrochemical industry, construction, and recycling facilities, aggregate.

Which is including non-standard machinery components, custom castings, forged parts, gears, shafts, ball mill spares, rotary kiln etc.

Specification

Standard and non-standard

Carbon steel, alloy steel

Forging, machining, heat treatment, Carburizing and quenching, cemented

Surface roughness: Ra0.8 after grinding

UT,MT, PT

Diameter: ≤13m

Module: ≤45

Teeth Alignment: The teeth are aligned parallel to the gear's axis.

Efficiency: Spur gears tend to be quite efficient, especially at moderate speeds and loads.

Noise: They can be noisy, especially when operated at higher speeds, due to the abrupt engagement of teeth.

Load Capacity: Spur gears are well-suited for transmitting moderate to high loads at relatively low speeds.

Design Simplicity: Their simple design makes them easy to manufacture and repair.

Spur gears are often used in applications such as clocks, conveyors, gearboxes, and automotive transmission systems. They are typically used for in-line power transmission, meaning the input and output shafts are parallel to one another.

Types of Spur Gears

1. External Spur Gears

The teeth are cut on the outer surface of the cylindrical gear body.

Applications: Used in most mechanical systems such as automobiles, industrial machines, and conveyors.

Advantages: Easy to manufacture and widely used.

2. Internal Spur Gears

The teeth are cut on the inner surface of a cylindrical ring, and they mesh with an external spur gear.

Applications: Commonly used in planetary gear systems, automotive differentials, and gear reduction units.

Advantages: Compact design with reduced radial space.

3. Rack and Pinion

A rack is a flat, straight gear with teeth, and it meshes with a pinion (a small external spur gear).

Applications: Converts rotational motion into linear motion or vice versa.

Advantages: Simple design for linear motion transfer.

4. Single Helical Spur Gears

Spur gears with slightly angled teeth, a blend between spur and helical gears.

Applications: Used in applications requiring smoother operation with reduced noise.

Advantages: Smoother and quieter than standard spur gears.

5. Cluster Gears

Multiple spur gears of different sizes mounted on the same shaft, forming a cluster.

Applications: Found in transmissions, where multiple gear ratios are needed.

Advantages: Allows for versatile speed and torque configurations.

6. Stepped Spur Gears

A gear with multiple sections of varying diameters and tooth counts, designed to mesh with gears of different sizes.

Applications: Used in machines requiring stepped speed or torque adjustments.

Advantages: Compact and multi-functional.

7. Herringbone Gears (Double Helical Spur Gears)

A pair of opposing helical gears with a V-shaped tooth pattern, eliminating axial thrust.

Applications: Heavy-duty applications in turbines, compressors, and large industrial machinery.

Advantages: High efficiency and smooth operation.

8. Gear Train Spur Gears

Multiple spur gears arranged in a series to form a gear train for complex power transmission.

Applications: Found in watch mechanisms, gearboxes, and industrial machinery.

Advantages: Precise control of speed and torque.