Description
1 HP 56J Threaded Shaft Three-Phase Motor — 208-230/460V, 3450 RPM
Meet a compact, reliable workhorse designed for pool, spa, and light industrial duty. This 1 HP, 2-pole motor runs at 3450 RPM in a standard 56J frame and features a threaded shaft for quick, secure coupling to pulleys, gears, or sprockets—making installation straightforward on pumps, conveyors, and small machine tools.
- Frame & Shaft: 56J frame with a threaded shaft for fast, secure coupling to drive components; precise alignment reduces wear and downtime.
- Voltage & Power: Dual-voltage operation (208-230 VAC or 460 VAC); 1 HP continuous; max current 4.0 A at 208-230 V and 2.0 A at 460 V; 2-pole, 3450 RPM.
- Mechanical Footprint: Approx. AG 9-11/16" and Conn. Dia. 29"; aligns with common OEM mounting patterns for easy replacement.
- Protection & Control: No built-in protector, allowing you to tailor protective devices (soft-start drives, overload relays, motor starters) to your control system.
- Brand & Application: From trusted A.O. Smith (AOS) / Century Electrical, designed for pool & spa equipment, pumps, conveyors, and light-duty automation in a compact 56J form factor.
- Duty & Reliability: Service Factor 1.4 provides a practical margin for startup surges and short-duration overloads, helping maintain performance through typical industrial demands.
This motor delivers a dependable balance of power, voltage flexibility, and straightforward integration. The dual-voltage capability reduces inventory across facilities, while the threaded shaft simplifies alignment and maintenance compared with some press-fit options. Pair it with a variable-frequency drive (VFD) for smooth starts and precise speed control on conveyors or fans, or implement external protection tuned to your application with compatible overload relays or motor starters. With its standard footprint and robust build, it’s an ideal replacement or upgrade for pool pumps, spa systems, and compact automation projects that require reliable 1 HP performance.
Meet a compact, reliable workhorse designed for everyday industrial duty: a 1 hp, 2-pole, 3450 RPM three-phase motor built to keep your equipment moving. Housed in a standard 56J frame, it features a threaded shaft for quick, secure coupling to pulleys, gears, or sprockets, making installation straightforward on conveyors, pumps, or small machine tools.
Key capabilities at a glance
- Voltage versatility: dual-voltage operation at 208-230 VAC or 460 VAC, simplifying wiring across different facilities.
- Power and current: 1 hp with a max current of 4.0/2.0 A depending on voltage (208-230/460 V), delivering steady torque for standard-load applications.
- Speed and frame: 3450 RPM on a 56J frame, aligning with common OEM footprints and easy replacement in existing installations.
- Build and drive: robust, threaded shaft for dependable coupling; no built-in protector, allowing you to tailor protective devices to your system.
- Mechanical footprint: Approx. AG: 9-11/16 and Conn. Dia.: 29, helpful for confirming compatibility with your mounting and connection hardware.
Why this motor is a smart choice
For facilities that operate across different electrical zones or want to minimize inventory, a dual-voltage, 1 hp motor offers flexibility without sacrificing performance. The 1.4 service factor provides a practical margin for startup surges and short-duration overloads, so you won’t stall under typical industrial demands. With a threaded shaft, you can secure your coupling quickly and maintain alignment more reliably than some press-fit alternatives. And because there’s no built-in protector, you have the freedom to design protection exactly for your application—whether that means a soft-start drive, overload relays, or motor starters tuned to your control system.
Ideal use cases
- Conveyor systems requiring reliable, continuous 1 hp drive
- Pumps and fans where steady torque at various voltages is beneficial
- Small machine tools and light-duty automation that rely on a standard 56J frame
Practical setup tips
- Pair with a variable-frequency drive (VFD) to achieve smooth starts, precise speed control, and energy savings, especially on conveyors or fans.
- Verify shaft coupling compatibility with your drivetrain thanks to the threaded shaft design; ensure proper torque ratings and secure fasteners.
- Plan your protective devices externally since the motor ships without an integrated protector; select a suitable overload relay or motor starter based on your control circuit.
- Confirm mounting and electrical alignment with your existing footprint—the 56J frame and standard bolt patterns help streamline replacements.
- Match the supply voltage to your project (208-230 VAC or 460 VAC) and use the correct gauge wiring, fusing, and protection per electrical code.
When you need a dependable, adaptable motor that balances power, voltage flexibility, and straightforward integration, this 1 hp, 56J-frame, three-phase design with a threaded shaft is a compelling choice for everyday industrial equipment.