Overview
The Magnaloy M30002806 is a precision-engineered flexible drive coupling hub designed for industrial power transmission applications. This Model 300 hub features a 7/8″ bore and 3/16″ keyway, manufactured from solid magnesium alloy that balances lightweight construction with exceptional strength. Light weight magnesium construction makes Magnaloy couplings 76% lighter than cast iron and 36% lighter than aluminum units, while delivering superior durability for demanding machinery environments.
Key Features
- Close machining tolerances (TIR of .002″) assure vibration-free operation and easy, accurate alignment without need for special tools
- Reduced loads on bearings, shafts and pumps for longer component life, plus easier handling and installation
- Rust proof and corrosion resistant
- Solid magnesium alloy permanent mold castings are heat treated and offer the highest strength-to-weight ratio available
- Comes standard with a single set-screw over the keyway
Technical Specifications
The M30002806 hub meets industry standards for precision flexible couplings with reliable performance across varied industrial load types and operating speeds.
Typical Applications
The Magnaloy M30002806 is ideal for:
- Hydraulic pump and motor coupling applications
- CNC machine tool drive systems
- Industrial manufacturing equipment
- Power transmission in moderate and steady-load environments
- Applications requiring lightweight, corrosion-resistant couplings
Compatibility & Replacements
Compatible With
- Machines with 7/8″ shaft bores
- Standard keyway drive shafts (3/16″ keyway width)
- Industrial hydraulic and pump/motor systems
- CNC and metalworking equipment
Replaces / Drop-In Replacement For
- Other Magnaloy 300 hubs with identical bore and keyway dimensions
- Verify shaft specifications and alignment requirements with your equipment manufacturer or system integrator before ordering
Works With
- Standard coupling assembly methods and procedures
- Set-screw or optional double set-screw retention methods
- Flexible coupling elastomers and spider inserts compatible with Model 300 coupling assemblies








