Deeply scalloped radial turbine rotors
CD Centrifugal Impeller Deeply scalloped radial turbine rotors A few summers back, a trawler repair dock in the Gulf of Mexico called our shop in a flat panic. They’d swapped in a new set of aftermarket radial turbine rotors on a pair of medium-speed turbochargers, and within 60 hours one unit threw a […]
What are Tiebolts? What role do they play in the centrifugal impeller of an air compressor?
CD Centrifugal Impeller What are Tiebolts? What role do they play in the centrifugal impeller of an air compressor? If you maintain or source parts for centrifugal air compressors, you’ve probably held a tiebolt in your hand and wondered why something so simple can cost a few hundred dollars. I used to think […]
Centrifugal compressor liquid carryover impeller damage
CD Centrifugal Impeller Centrifugal compressor liquid carryover impeller damage The phone call usually starts the same way. A plant’s main air compressor trips on high vibration, and the maintenance crew finds the first-stage impeller looking more like a piece of driftwood than a precision rotating component. The leading edges are scalloped, the inducer […]
What is compressor exducer? The difference between compressor inducer and compressor exducer
CD Centrifugal Impeller What Is Compressor Exducer? The Difference Between Compressor Inducer and Compressor Exducer If you’ve ever held a high-speed centrifugal air compressor impeller in your hands—maybe after a bearing failure or a particularly nasty surge event—you’ve probably noticed that it’s not just a simple fan wheel. One side seems to twist […]
What is Compressor Inducer? The Difference Between Compressor Inducer and Compressor Impeller
CD Centrifugal Impeller What is Compressor Inducer? The Difference Between Compressor Inducer and Impellers for Centrifugal Air Compressors Last month I took a call from a maintenance supervisor who was nearly shouting down the line. “We need a new inducer for our centrifugal compressor – and we need it yesterday.” He had the […]
CNC Gas Turbine Impeller
CD Centrifugal Impeller CNC Gas Turbine Impeller You know the drill. You send an RFQ for a gas turbine impeller, and back come twelve quotes. Eleven of them promise “5-axis precision machining,” “ISO certified,” and “competitive pricing.” They all blur together. But you’re not buying a simple turned part. You’re buying a component […]
In which industries is the 6061-T6 centrifugal impeller typically used? What are its advantages and disadvantages?
CD Centrifugal Impeller In which industries is the 6061-T6 centrifugal impeller typically used? What are its advantages and disadvantages? If you manage a maintenance budget or handle sourcing for rotating equipment, you’ve almost certainly dealt with a 6061-T6 centrifugal impeller. It’s the default aluminum alloy for high-speed blowers, compressors, and pumps where the […]
Special lock nut for centrifugal impeller of air compressor
CD Centrifugal Impeller Special lock nut for centrifugal impeller of air compressor Last month, a maintenance planner at a large air separation plant called me in frustration. Their main process air compressor — a three-stage centrifugal unit — had been running rough since a scheduled overhaul. Vibration on the third stage crept from […]
Turbo compressor wheel upgrade
CD Centrifugal Impeller Turbo Compressor Wheel Upgrade: What Your Maintenance Team Won’t Tell You (But Your Budget Will Thank You For) Last spring, I got a late-night call from a plant manager in Ohio. One of his centrifugal compressors had eaten a piece of loose piping and shredded the impeller. OEM lead time? […]
Billet turbo impeller upgrade
CD Centrifugal Impeller Billet turbo impeller upgrade Let’s get one thing straight right out of the gate: most turbo impeller failures don’t announce themselves with a bang. They start as a hairline crack at the root of a blade, grow during thermal cycling, and finally let go when your engine is under maximum […]
