Overview
The Magnaloy M30012012 is a Model 300 flexible coupling hub manufactured by Magnaloy Coupling Company, a division of Douville Johnston Corporation. This precision-engineered coupling hub features a 1-5/8″ bore and 3/8″ keyway, designed to transmit power with minimal vibration and maximum reliability in industrial automation and mechanical power transmission applications. The hub is supplied with a single setscrew over the keyway as standard.
Key Features
- Lightweight magnesium construction: 76% lighter than cast iron and 36% lighter than aluminum units, while stronger than either.
- Single setscrew design: Single Setscrew standard configuration; optional double set-screw variants available at 45° or 90° to the keyway.
- High precision: Close machining tolerances (TIR of .002″) assure vibration-free operation and easy, accurate alignment without need for special tools.
- Corrosion resistant: Rust proof and corrosion resistant magnesium alloy construction suitable for diverse environments.
- Heat-treated material: Solid magnesium alloy permanent mold castings are heat treated and offer the highest strength-to-weight ratio available.
Technical Specifications
- Model: 300
- Bore Diameter: 1-5/8″ (1.625″)
- Keyway Width: 3/8″
- Set Screw Configuration: Single setscrew (standard); double set-screw options available
- Material: Heat-treated magnesium alloy permanent mold casting
- Machining Tolerance: TIR .002″
- Manufacturer: Magnaloy Coupling Company (Douville Johnston Division)
- Part Number: M30012012
Typical Applications
The Magnaloy M30012012 coupling hub is widely used in industrial automation, machinery drive systems, and mechanical power transmission applications where reduced weight, vibration dampening, and reliability are critical. Applications include pump drives, fan assemblies, compressor systems, and precision motion control equipment where bearing and shaft load reduction extends component service life.
Compatibility & Replacements
Compatible With
- Model 300 Magnaloy flexible coupling inserts and complete assembly packages
- Standard 1-5/8″ bore shaft applications with 3/8″ keyway
- Industrial automation and power transmission systems requiring precision hub-and-spoke coupling geometry
- Machinery requiring shock-absorbing, vibration-damping couplings
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The Magnaloy M30012012 is a standard Model 300 hub suitable for replacing worn or damaged hubs of identical bore and keyway specifications. Consult Magnaloy documentation or the manufacturer directly at 989-356-2186 for cross-reference information.
Works With
- Magnaloy Model 300 coupling inserts (rubber or elastomer elements)
- Standard mechanical keyway and setscrew fastening systems
- Industrial motor and drive systems (AC, DC, variable frequency)
- Fluid power and mechanical drive equipment
