Built on tolerance
Grinding chrome is where the trade gets honest. A plated part is already expensive by the time it reaches the wheel, and burning one doesn't just scrap the part — on high-strength steel it puts untempered martensite where nobody can see it. That's the reason specs like BAC 5032 exist, and the reason careful setup beats fast setup every time.
That work has included landing gear parts at 275 KSI and above — the tier where the consequences of a bad grind aren't scrap, they're a leg that fails in service.
LL Centerless Grinding is a working grinder's shop in Des Moines, Washington — minutes from the Kent and Auburn plating and machining corridor. The trade was learned holding aerospace tolerance on production work, and the shop is built around the same standard: setup done properly, size held across the lot, and no part shipped that wasn't checked.
- Diameter range.250" – 7.1"
- Tolerance±.0001" standard · ±.00005" achievable on suitable work
- Surface finishTo 4Ra
- Materials52100, 4340, 15-5 PH, Inconel, ToughMet, Al-Ni bronze
- Coatings groundHard chrome, electroless nickel
- Spec experienceBAC 5032, BAC 5440
- Turnaround7–10 days, expedite available
