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Spline Cutting

A reliable source for Spline Cutting information and leading Spline Cutting Companies.

Spline shafts are the products created by spline cutting techniques, which is an external cut like blind broaching. Internal broaching is the other general method of broaching, a technique that involves full penetration of the piece being broached. As the spline rotates, these grooves interlock with the matching grooves in the mating piece. This connection enables a spline gear to transfer torque. Read More…

Spline Cutting Spline cutting is a process that uses a broaching machine to cut grooves into a gear's spline shaft. Spline shafts contain a series of ridges on a driveshaft that are used to even out the rotation speed of the companion piece.Because only the surface needs to be cut during the spline cutting process, only external broaches are used.
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Leading Manufacturers

Hatfield, PA  |  800-314-3332

Since 1982, Isotech has been a leader in the broaching industry. You can trust the accuracy of these solutions, and the experts at Isotech are always available to assist you with your needs. Feel free to contact them today to learn more information!

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Isotech, Inc. $$$

Kenosha, WI  |  262-764-3503

Toolamation, Inc. specializes in complete high-volume production broaching services. We have the capacity to produce many millions of parts annually. On-site tumbling, deburring, & sharp edge removal services. Fast turn-around. We also offer a range of screw machine tooling products.

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Toolamation, Inc. $$$

Freehold, NJ  |  732-972-5400

AmTech International is a leading manufacturer in the broaching industry. Our broaching machine production has a capability range from 2T-50T and up to 72? of stroke. We serve a variety of industries, including automotive, power transmission applications, and electronics. Metals that we use for broaching include stainless steel, brass, copper, and carbon steel.

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AmTech International $$$

Pewaukee, WI  |  262-542-2461

For over 100 years, Precision Gears, Inc. has been a leader in the broaching industry. We can work with widths from .063” up to 1”. Precision Gears has a wide variety of materials, including ductile iron, carbon steel, aluminum, and alloy steel. Industries we serve include medical, packaging, construction, and machinery.

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Precision Gears, Inc. $$$

Los Angeles, CA  |  800-621-1945

Pioneer Broach Company is premier vendor of quality rotary broaching cutting tools. We specialize in custom spline, serration and hexalobular shaped rotary or wobble broaches, and also offer a complete line of standard hex and square rotary broach tools. Our new rotary broaching toolholder is designed for all modern CNC machines, mills and lathes.

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Pioneer Broach Company $$$
placeholder image Isotech, Inc. Toolamation, Inc. AmTech International Precision Gears, Inc. Pioneer Broach Company

A broach is a hydraulic cutting tool used to cut holes in metal, wood and plastic materials. Metals often used for broaching techniques like spline cutting are the softer metals, such as aluminum, brass and copper.

Products often produced by broaching tools such as spline cutters include gears, screws, nuts, bolts, gun components, small wheels, wrenches and bushings and a variety of other manufacturing tools. Spline cutting mainly serves the automotive industry, although along with other broaching machines, these products are utilized in industrial manufacturing, aerospace, marine, sports equipment, food processing and electronic industries, as well as many others.

Broaching teeth, which perform the cutting action, come in many different sizes and spacing configurations, depending on the part that is being broached. There are quite a few generalized spline styles on the market today as well.

An involute spline works much like an involute gear works, with the uniform pattern of teeth that when rotating, intersect perfectly with each other and cause the torque that powers a vehicle or machine. Most splines and gears utilize the involute equation.

A parallel key spline has parallel, equally spaced groves in both the radial and axial directions. Serrations are spline shafts that have a "V" formed by their equally spaced grooves. Crowned splines are basically involute splines, except with slightly modified teeth that allow for misalignment.

A helical spline is going to look a lot like a screw, with helical grooves all around the side that are either parallel or involute, which allows for beneficial movement between the parts. One more well known style is the ball spline, which involves a ball bearing on the end of the teeth for a varied amount of motion.

These specific spline styles are most commonly used as bicycle gears, mounts for the propellers in engines, drive shafts and cassettes.

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