Superior surface finishes. Superior business outcomes.
Superfinishing by Darmann
Darmann has pioneered superfinishing technology since its founding, unlocking advanced applications and setting the standard for superfinishing process across the world’s most demanding manufacturing sectors.
Working directly with clients, we achieve longer tool life, more consistent production quality and an optimized process that reduces stations required while lowering total costs.
Ra 0.025 μm surface roughness
in fuel system and bearing applications
Up to 55,000 parts per stone
in a taper-roller through-feed application
60% longer tool life
compared to competitor solution
10x more parts finished
compared to competitor solution
Our superfinishing products
Superfinishing stones
Superfinishing wheels
Superfinishing tapes
Superabrasives available
X & X2 Series
Aluminum oxide
Silicon carbide
CBN
Diamond
Bond technologies available
Vitrified
Resin
Metal
Darmann superabrasive products offer the exact measurements, grit size, and bond you need to achieve uncompromising surface finishes. Our conventional abrasives are available from 120 to 2,000 mesh, with CBN and diamond ranging from 150 to 8,000 mesh.
Shaped to your specifications
Our superfinishing stones, wheels, and tapes are available in the most common shapes and configurations. But every Darmann product can be engineered to meet your exact criteria.
Case studies
IR superfinishing for a ball bearing application
Darmann’s superfinishing stone achieved a 0.05 μm Ra surface finish against a 0.10 μm Ra manufacturing requirement, exceeding surface-finish quality over 400 pieces at a stock removal of 0.008-0.012.
OR Superfinishing for a ball bearing application
Darmann’s superfinishing stone achieved a 0.05 μm Ra surface finish against a 0.10 μm Ra requirement on the outer ring, delivering consistently superior surface quality over 400 manufactured pieces.
Through-feed superfinishing for a tapered roller application
Darmann’s superfinishing stone achieved a 0.05 μm Ra surface finish with only 0.002 mm stock removal, while serving 36,000 pieces at three stations, and 55,000 at another three for dramatic product life.
Ultra-fine surface finishes for a medical femoral head
Using a 3-stage process, Darmann’s diamond & CBN abrasives were able to achieve 0.002 μm Ra on cobalt-chromium orthopedic implant components, with an intermediate finish of 0.005 μm Ra.
Custom engineering. On-site optimization.
Darmann superfinishing products are engineered to your specifications, your production line, and your business goals. Our engineers work on-site with your team to determine the exact grit, abrasive, bond, and dimensions, then help you optimize your superfinishing process.
The results? Increased tool life. Lower surface finishes. Shorter cycle times. And consistently superior quality at a lower total cost of ownership.