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Everything You Need To Know About Spline Shafts

October 26, 2022

Everything You Need To Know About Spline Shafts

A splined shaft or a spline shaft is a mechanical device that’s used to transmit torque and rotation between two parts. It’s basically a rod with teeth (or “splines”) that mesh with the corresponding grooves in another part. While that may sound simple enough, there’s actually a lot more to know about them. In this blog post, we will explore everything you need to know about splined shafts, from how they’re used to the different types available. By the end, you should have a good understanding of this important mechanical component.

What is a Spline Shaft?


It is a mechanical component that transmits torque and rotational motion between two parts. It consists of a series of grooves or ridges (splines) on the outside surface of a cylindrical body. The splines fit into corresponding grooves in another part, such as a hub or gear. This interlocking connection allows the shaft and the other part to rotate together while preventing axial movement (sliding back and forth along the shaft).

The Different Types of Splined Shafts

There are three main types of shafts:

1. Straight spline shafts

2. Helical spline shafts

3. Involute splines


Straight spline shafts have teeth that are cut parallel to the axis of the shaft. Helical shafts have teeth that are cut at an angle to the axis of the shaft. Involute splines have teeth that are cut in a spiral pattern around the circumference of the shaft.

Pros of a Spline Shaft

There are several advantages to using a spline shaft over other types of mechanical connections, such as keyed joints or welded joints. First, they can handle higher loads and transmit more torque than keyed or welded joints. They also allow for some misalignment between the connected parts without affecting performance. And finally, splined shafts don’t require frequent maintenance like other types of connections do.

What are the Applications of Spline Shafts?

They are commonly used in a wide variety of applications, such as automotive transmissions, agricultural machinery, construction equipment, and power tools. They are also used in many non-rotary applications, such as linear actuators and pumps.

Spline shafts are a great way to connect two pieces of equipment or machinery, and they can be used in a variety of applications. You can rely on True Gear & Spline Ltd. for all your gear and spline needs. We use CNC machining for gear manufacturing, enabling us to offer greater precision. Call us today to learn about all our services.