EST is a global leader in the design and manufacturing of spline broach tools for both green/soft and hard stage parts, as well as other custom broach tools for internal and external forms.
Broach sizes can range from 1/2” diameter by 40” OAL to 13 ¾” diameter by 118” OAL. From material science to tool design, manufacturing, coating, and CNC sharpening, we offer custom solutions that you can count to achieve optimal tool performance resulting in lower cost per part.
EST also offers optional tool validation for pre-qualifying tools. We broach your sample parts and provide a GMM inspection report prior to the tool delivery. We also offer stand-alone broaching machines and turn-key machine & tool packages.
Contact us today to learn how EST can help you maintain your competitive advantage.
Helical Broach for Ring Gears
Spiral gullet body with helical shell
Hard Broaches are used for re-sizing internal splines on hardened parts at max. HRC 60. They feature a solid carbide spline shell mounted on an arbor with the same puller and retriever ends as the green broach.
Broaching speed needs to be at 60m/min
Finished part spline surface can reach Ra0.4
Involute spline/ Parallel or Straight-sided spline/ Serration spline broaches
Conventional or spiral gullet design with or without minor sizing dwell teeth per part specs and tolerance requirement.
Multiple-pass or one-pass design based on broach machine capacity and tool tolerance requirement.
Involute – Parallel/Straight Side – Serration
- Cam Profile or Lobe Profile
- Round-to-Square, Round-to-Rectangle or Round to Custom Profile
- Hex Broach
- D and Double D broach
- Push broach
- Round, Square, Rectangle or any other special form
Broach Set for disc brake caliper bracket
Keyway broach with or without chamfer teeth
Fully ground with high precision
External Spline or
Pot Broach (also called Tunnel Broach)
Pot containing broach tool inserts and shave rings
Surface Broach Set
for crank shaft connecting rods
Surface Spline Broach Set
for steering racks