Power Forward with Single Bearing Alternators
If you're working in tight quarters, under pressure, or with a deadline breathing down your neck, the last thing you need is a bulky, high-maintenance generator setup. That’s where a single bearing alternator really shines.
At General Power, we’ve been building, shipping, and supporting power systems since 1999, and we know what works when space, time, and reliability matter. With over 10,000 customers across 100 countries, we’ve learned a thing or two about what makes a good alternator great.
Direct Coupling Is at the Core of Single Bearing Alternators
Instead of relying on two bearings to support the shaft, single bearing alternators use just one bearing on the drive end, while the non drive end bolts directly to the engine flywheel housing using an SAE adapter and a flexible coupling. It’s all about keeping the design compact and friction to a minimum.
There’s a catch, though. You can’t hook up pulleys or belts to these units. They’re not built to handle radial shaft loads. So, if you're thinking about a belt drive setup, this isn’t the right fit. But if you're looking for something efficient and directly integrated with the engine, it's a smart move. Fewer moving parts means fewer problems down the line.
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Single Bearing Alternators Deliver Compact Power
The wide range of single bearing alternators available makes these alternators suitable for everything from continuous electricity production to backup use during grid failures. Need something rugged for a job site or refined for long-term industrial use? We’ve got it in stock.
Voltage and Frequency Options to Match Your System
Electricity is not one-size-fits-all, and the last thing you want is an alternator that doesn’t speak your voltage language. Luckily, our single bearing alternator lineup at General Power covers all the key bases: 120 or 240 volts, 208 volts, 480 volts.
Whether you're working with 50 hertz grids abroad or 60 hertz setups in the Americas, you’re covered. These units don’t just meet technical specs, they hit real-world performance goals:
- High efficiency between 92 and 96 percent
- Brushless excitation systems with PMG or auxiliary winding
- Precision voltage regulation between ±0.5 percent and ±1 percent
- Available in both single-phase and three-phase configurations
If you're trying to produce electricity cleanly and consistently, this kind of alternator delivers the power profile you need.
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Single Bearing Alternators Built for High-Pressure Work
Durability is more than just a buzzword when you're operating under pressure. The alternators we offer come with insulation rated at Class H, which means they handle high heat and rough environments without flinching. These are not just pretty parts, they’re purpose-built machines with the rotor, shaft, and windings to match.
You’ll see these alternators working hard in diesel generators or driving emergency power in high-demand sectors. If uptime is crucial and you're not looking to babysit your equipment, these are the units that just keep running. The fact that they’re brushless? That just adds to the long-term efficiency and value.
Precision Alignment Matters More Than You Think
Alignment is often the overlooked detail that can make or break an installation. Since a single bearing alternator connects directly to the engine flywheel, any misalignment between the engine and alternator can wear out the bearing, damage the flexible coupling, or even impact the performance of the generator itself.
That’s why it pays to work with people who know what they’re doing. Our engineers and certified techs can walk you through installation or troubleshoot your setup if needed. Good alignment isn't a luxury, it's a requirement if you want your system to last.
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We Deliver Single Bearing Alternators With Experience and Speed
You’ve got a job to do. You don’t have time to chase down parts, wait for emails, or wonder when your shipment is arriving. That’s why General Power built its reputation around fast quotes, quick shipping, and real support, the kind that sticks with you after the sale.
We’re not just box movers. We’re a Miami-based OEM, dealer, and distributor that backs every product with a human team. Whether you’re maintaining diesel generators or installing backup power for a critical facility, you can contact us with confidence. The right single bearing alternator is in stock, and we’re here to help you get it working.