Vertical Spline Broaching for Precise Internal Profiles

At Broaching Technologies, vertical spline broaching is performed on rigid C.A.M.S. vertical slotting machines that deliver controlled stroke motion and repeatable cutting action. The vertical broaching setup keeps the tool and workpiece precisely aligned through every pass, producing consistent internal spline geometry tooth form, depth, and finish across both prototype and production volumes.

What Is Vertical Spline Broaching?

Vertical spline broaching forms multiple internal teeth inside a bore using a vertically oriented cutting stroke. The vertical axis gives the operator clear control over depth and alignment, making it well suited to splines that must carry torque evenly across every tooth.

Why Vertical Spline Broaching Requires Precision Equipment

Uniform tooth geometry depends on a rigid machine and a steady, repeatable stroke. On a vertical platform, that rigidity keeps the tool from deflecting mid-cut — so depth and spacing stay consistent across the full profile. When they drift, load rides unevenly across the teeth, leading to accelerated wear or early failure.

As the exclusive U.S. distributor of C.A.M.S. slotting machines, Broaching Technologies runs the same vertical equipment we sell — so we know firsthand how these machines perform in live production, not just on paper.

Vertical Spline Broaching as a Core Capability

Vertical spline work is a core capability here, supporting manufacturers who need dependable internal profiles for parts that carry real load. We match the tooling and setup to the part rather than forcing every job through a single method.

Involute Spline Broaching

High-precision involute profiles cut for efficient torque transmission in gears, shafts, and couplings.

Straight-Sided Spline Broaching

Evenly spaced straight-sided splines for a smooth, reliable rotational fit under load.

Serration Broaching

Fine serrations for small, high-torque parts such as transmission shafts, giving positive grip and tight alignment.

Blind-Hole Spline Broaching

Internal splines in blind features where the tool cannot exit the part, cut with precise depth control and chip management.

Custom Spline Tool Creation

Proprietary broach tooling designed and manufactured in-house to match your exact part specifications.

Specialized and Low-Volume Components

Complex, low-volume parts with non-standard or asymmetric spline profiles, handled with tailored setups.

Tooling and Engineering Expertise for Vertical Spline Broaching

Cut quality lives and dies on the tool. Broaching Technologies designs, maintains, and reconditions custom broaches to suit each profile, material, and tolerance band — which is why results stay consistent job after job. Well-kept tooling also protects surface finish and extends the life of every cut.

Materials We Commonly Broach

We broach a broad range of materials used across power transmission and heavy industry:

Rigid machine platforms and controlled cutting strategies let us hold tight tolerances and clean surface finishes across all of them — including the tougher, work-hardening alloys that resist consistent machining.

Industries That Rely on Vertical Spline Broaching

Precise torque transmission and reliable alignment matter most in demanding sectors, where a poorly formed spline can compromise an entire assembly. We support manufacturers across:

Oil and Gas Equipment

Pump & Fluid Handling

Electric Motors & Power Transmission

Agricultural & Construction Equipment

Aerospace & Defense Components

Medical Device Manufacturing

Why Choose Broaching Technologies for Vertical Spline Broaching?

A Proven Approach to Precision Spline Work

Consistent tooth form and depth on every internal profile
C.A.M.S. vertical slotting machines built for accuracy and repeatability
Exclusive U.S. access to C.A.M.S. slotting technology
Custom tooling matched to your specific requirements
Custom tooling matched to your specific requirements
Engineering support for complex, non-standard applications
Tight tolerances across a wide material range
Engineering support for complex, non-standard applications
Reliable turnaround with repeatable results

Need Precision Vertical Spline Broaching?

If your part calls for accurate internal splines that perform consistently under load, Broaching Technologies, a manufacturer of vertical spline broaching equipment, possesses the expertise in vertical machinery, tooling, and processes to meet your needs. Send us your drawing and our team will review the geometry, tolerances, and volume to recommend the right approach.

Frequently Asked Questions

What is vertical spline broaching used for?

It cuts internal spline profiles multiple teeth inside a bore so a part can transmit torque across several contact surfaces at once. It's common in hubs, gears, couplings, and drivetrain components that need even load distribution and precise alignment.

What types of splines can you broach?

We produce involute, straight-sided, and serrated internal splines, along with custom and blind-hole profiles. Tooling is matched to each part's specific geometry and tolerance requirements.

Can you broach blind splines?

Yes. Blind splines are cut with precise depth control and tooling designed to manage chip evacuation, since the tool cannot pass through the part. Consistent stopping points and clean geometry are the priority on blind work.

What tolerances can you hold?

Tolerances depend on the part's material, geometry, and spline standard. Our engineering team reviews each drawing before cutting to confirm the profile can be produced to the required fit. Send us your specification for a part-specific assessment.

What materials can you broach?

Carbon and alloy steels, stainless steels, aluminum alloys, bronze and brass, and high-strength alloys such as Inconel. Cutting strategy and tooling are adjusted to suit the material.

Do you handle both prototypes and production runs?

Yes. Our setups support single prototypes, low-volume specialized parts, and repeat production — with custom tooling built and maintained in-house for consistent results.

What makes vertical slotting machines suited to spline broaching?

The vertical stroke gives strong control over depth and alignment, and a rigid machine structure minimizes tool deflection. As the exclusive U.S. distributor of C.A.M.S. slotting machines, we run this equipment daily and know how it performs in production.