Flexible Couplings

Magnaloy Coupling M30002806 7/8 x 3/16 Hub Model 300

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$38.99

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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
Manufacturer

Magnaloy Coupling Company

Part Number

M30002806

Model

300

Bore Diameter

7/8 inch

Keyway Width

3/16 inch

Material

Magnesium alloy, heat-treated permanent mold casting

Tolerances

TIR ±.002 inch

Set-Screw

Single set-screw over keyway (standard); optional double set-screws available

Corrosion Resistance

Rust proof and corrosion resistant

Primary Applications

Hydraulic pumps, motors, CNC machinery, manufacturing equipment

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