Broaching & Spline Machining Capabilities

At Hayes Couplings, we invest heavily in our shop to control every stage of manufacturing our power transmission components, from raw material to finished product. By keeping broaching, hobbing, and full-service machining in-house, we ensure the highest quality, tightest tolerances, and efficient production while allowing our engineering and manufacturing teams to collaborate closely on every component.

Broaching Capabilities

We operate seven horizontal broaching machines to produce a wide range of internal splines and keyways for our products. Whether for prototypes or production volumes, our in-house capabilities deliver precision and consistency.

Internal Broaching Includes:

  • ANSI Involute Splines
  • Metric DIN 5480 Splines
  • Straight-Sided Splines
  • JIS (Japanese Standard) Splines
  • Inch and Metric Keyways

Our extensive tooling inventory allows us to handle diverse specifications and quickly adapt to new designs.

Spline Hobbing

For external spline applications, our hobbing equipment and tooling allow us to create precise, durable splines that integrate seamlessly with our components.

External Spline Capabilities:

  • ANSI Involute Splines
  • Metric Splines
  • Straight-Sided Splines
  • Gear Splines

Full-Service Machining

Supported by a complete machining department, we handle the entire lifecycle of our components in-house, ensuring quality and consistency at every step.

Integrated Automated Manufacturing:
We leverage integrated automation across key stages of our manufacturing operations to improve precision, throughput, and repeatability. This investment allows us to maintain tight process control, optimize resource utilization, and support high‑volume or specialized production needs.

Machining Equipment Includes:

  • 16 Horizontal Lathes (up to 16″)
  • 2 Vertical Lathes (up to 23″)
  • 10 Vertical Mills (with 4th Axis)
  • 2 Done in one machine (Live tooling, two spindles, two turrets, gantry loaded
  • 3 Production Saws
  • 7 Horizontal Broaching Machines (5–10 Ton)
  • 1 Hobbing Machine
  • 1 Hone

Benefits of Our In-House Capabilities

  • Consistent quality and tight tolerances
  • Efficient production and short lead times
  • Full control over every step of component creation
  • Advanced engineering support and process oversight
  • Custom packaging and finishing capabilities

By maintaining these capabilities in-house, Hayes Couplings ensures our power transmission components meet the highest standards for performance, reliability, and cost efficiency.

Explore how our precision manufacturing capabilities deliver the quality and performance you can trust.