PCBN Inserts for Brake Drum Machining: Improve Efficiency & Reduce Cost

Introduction

Automotive brake drums are critical components of a vehicle’s braking system, where machining quality directly impacts driving safety. While coated carbide and ceramic inserts have been widely used in the past, their short tool life and frequent changeovers limit productivity. With advances in superhard materials, polycrystalline cubic boron nitride (PCBN) inserts are now emerging as the superior solution for machining brake drums.

 

●Coated carbide inserts

●Ceramic inserts

●Each cutting edge typically machines only 20–50 workpieces

●Frequent tool changes increase downtime and cost

●Low processing efficiency fails to meet modern production demands

 

●Wear resistance

●Thermal stability

●Red hardness at high temperatures

●Higher machining efficiency

●Superior surface quality

●Longer tool life

More Superhard PCBN Inserts: Engineered for Performance

 

With over a decade of experience in PCBN tooling R&D and production, we provide advanced solutions for brake drum machining.

 

Our fully sintered PCBN inserts offer:

 

Our newly launched multi-edge indexable PCBN inserts deliver:

Parameter	Ceramic Inserts	More Superhard PCBN
Workpiece Material	HT250 Brake Drums	HT250 Brake Drums
Machined Part	Brake Surface	Brake Surface
Insert Model	CNGN120412	CNGN120412 MBN2800
Ap (mm)	1–2	1–2
V (m/min)	800–1000	800–1000
F (mm/rev)	0.3–0.4	0.3–0.4
Tool Life (pieces)	40–60	160–180

 

 

●Unique cutting-edge design reduces flank friction and tool wear

●Enhanced edge strength ensures stable cutting and consistent accuracy

●High-speed capability increases throughput

●Superior surface finish and dimensional accuracy

●Reduced shape error in finished brake drums